Sound Processor Series for Car Audio
Sound Processors with Built-in 3-band Equalizer
BD37531FV,BD37532FV,BD37533FV,BD37534FV
No.10085EAT06
●Description BD37531FV, BD37532FV, BD37533FV, BD37534FV are sound processors built-in 3-band equalizer for car audio. The functions are stereo input selector available to switch single end input and ground isolation input, input-gain control, main volume, loudness, 5ch fader volume, LPF for subwoofer(except BD37531FV), mixing input(except BD37531FV, BD37532FV). Moreover, “Advanced switch circuit”, that is ROHM original technology, can reduce various switching noise (ex. No-signal, low frequency likes 20Hz & large signal inputs). “Advanced switch” makes control of microcomputer easier, and can construct high quality car audio system. ●Features 1) Reduce switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness by using advanced switch circuit [Possible to control all steps] 2) Built-in differential input selector that can make various combination of single-ended / differential input. 3) Built-in ground isolation amplifier inputs, ideal for external stereo input. 4) Built-in input gain controller reduces switching noise for volume of a portable audio input. 5) Decrease the number of external components by built-in 3-band equalizer filter, LPF for subwoofer (except BD37531FV), 2 loudness filter. And, possible to control Q, Gv, fo of 3-band equalizer and fc of LPF, Gv of loudness by I C BUS control freely 6) It is possible for the bass, middle, treble to the gain adjustment quantity of ±20dB and 1 dB step gain adjustment. 7) Terminals for the subwoofer outputs are equipped, and the audio signal outputs of front, back and subwoofer can be chosen with the I2C BUS control. 8) Built-in mixing input, mixing attenuator. (except BD37531FV, BD37532FV) 9) Bi-CMOS process is suitable for the design of low current and low energy. And it provides more quality for small scale regulator and heat in a set. 10) Package is SSOP-B28. Putting input-terminals together and output-terminals together can make PCB layout easier and can makes area of PCB smaller. 2 11) It is possible to control by 3.3V / 5V for I C BUS. ●Applications It is the optimal for the car audio. Besides, it is possible to use for the audio equipment of mini Compo, micro Compo, TV etc with all kinds.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
1/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
● Line up matrix
Technical Note
Function BD37531FV BD37532FV BD37533FV BD37534FV
Input selector
○
○
○
○
Input gain Mute Volume
○ ○ ○
○ ○ ○
○ ○ ○
○ ○ ○
Bass
○
○
○
○
Middle
○
○
○
○
Treble
○
○
○
○
Fader
○
○
○
○
Loudness
○
○
○
○
LPF
×
○
○
○
Mixing Level meter
×
×
○
○
×
×
×
○
Specifications ・(Stereo input) ・Single-End/Diff/Full-Diff (Possible to set the number of single-end/diff/full-diff as follows ) Single-End Differential Full-Differential Mode 1 0 3 1 Mode 2 1 2 1 Mode 3 3 1 1 Mode 4 4 0 1 Mode 5 5 1 0 Mode 6 6 0 0 Table.1 Combination of input selector ・0～20dB（1dB step） ・Possible to use “Advanced switch” for prevention of switching noise. ・Possible to use “Advanced switch” for prevention of switching noise. ・+15dB～-79dB（1dB step）, -∞ ・Possible to use “Advanced switch” for prevention of switching noise. ・-20～+20dB（1dB step） ・Q=0.5, 1, 1.5, 2 ・fo=60, 80, 100, 120Hz ・Possible to use “Advanced switch” at changing gain ・-20～+20dB（1dB step） ・Q=0.75, 1, 1.25, 1.5 ・fo=500, 1k, 1.5k 2.5kHz ・Possible to use “Advanced switch” at changing gain ・-20～+20dB（1dB step） ・Q=0.75, 1.25 ・fo=7.5k, 10k, 12.5k, 15kHz ・Possible to use “Advanced switch” at changing gain ・+15dB～-79dB(1dB step), -∞dB (BD37531FV : 0dB～-79dB, -∞dB) ・Possible to use “Advanced switch” for prevention of switching noise. ・0dB～20dB(1dB step) ・fo=250/400/800Hz ・Possible to use “Advanced switch” for prevention of switching noise. ・fc=55/85/120/160Hz, pass ・Phase shift (0°/180°) ・Monaural input ・+7dB～-79dB（1dB step）, -∞ ・Possible to use “Advanced switch” for prevention of switching noise. ・I2C BUS control ・DC Output
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
2/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Absolute maximum ratings (Ta=25℃) Item Power supply Voltage Input voltage Power Dissipation Storage Temperature Symbol VCC Vin Pd Tastg Rating 10.0 VCC+0.3～GND-0.3 1063 ※1 -55～+150
Technical Note
Unit V V mW ℃
※This value decreases 8.5mW/℃ for Ta=25℃ or more. ROHM standard board shall be mounted. Thermal resistance θja = 117.6(℃/W) ROHM Standard board Size：70×70×1.6(㎣) Material：A FR4 grass epoxy board(3% or less of copper foil area) ●Operating conditions Item Power supply Voltage Temperature Symbol VCC Topr MIN 7.0 -40 TYP － － MAX 9.5 +85 Unit V ℃
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
3/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
BLOCK
●Electrical characteristics (Unless specified particularly, Ta=25℃, VCC=8.5V, f=1kHz, Vin=1Vrms, Rg=600Ω, RL=10kΩ, A1 input, Input gain 0dB, Mute off, Volume 0dB, Tone control 0dB, Loudness 0dB, LPF OFF(BD37532FV,BD37533FV,BD37534FV), Mixing OFF(BD37533FV,BD37534FV), Fader 0dB) Limit Item Symbol Unit Condition Min. Typ. Max. Current upon no signal Voltage gain Channel balance Total harmonic distortion 1 (FRONT,REAR) Total harmonic distortion 2 (SUBWOOFER) Output noise voltage 1 (FRONT,REAR)＊ Output noise voltage 2 (SUBWOOFER)＊ Residual output noise voltage＊ Cross-talk between channels＊ IQ GV CB
THD+N1 THD+N2
－ -1.5 -1.5 － － － － －
38 0 0 0.001 0.002 3.8 4.8 1.8
48 1.5 1.5 0.05 0.05 15 15 10
mA dB dB ％ ％ μVrms μVrms μVrms
GENERAL
VNO1 VNO2 VNOR
CTC
－
-100
-90
dB
Ripple rejection Input impedance(A, B, C) Input impedance (D, E) INPUT SELECTOR Maximum input voltage Cross-talk between selectors
RR RIN_S RIN_D VIM CTS
－ 70 175 2.1 －
-70 100 250 2.3 -100
-40 130 325 － -90
dB kΩ kΩ Vrms dB
No signal Gv=20log(VOUT/VIN) CB = GV1-GV2 VOUT=1Vrms BW=400-30KHz VOUT=1Vrms BW=400-30KHz Rg = 0Ω BW = IHF-A Rg = 0Ω BW = IHF-A Fader = -∞dB Rg = 0Ω BW = IHF-A Rg = 0Ω CTC=20log(VOUT/VIN) BW = IHF-A f=1kHz VRR=100mVrms RR=20log(VCC IN/VOUT)
Common mode rejection ratio ＊ (D, E)
CMRR
50
65
－
dB
INPUT GAIN
Minimum input gain
GIN MIN
-2
0
+2
dB
Maximum input gain Gain set error
GIN MAX GIN ERR GMUTE GV MAX GV MIN GV ERR1 GV ERR2 GV ERR3
+18 -2 －
+20 0 -105 15 -100 0 0 0
+22 +2 -85 17 -85 2 3 4
dB dB dB dB dB dB dB dB
VIM at THD+N(VOUT)=1％ BW=400-30KHz Rg = 0Ω CTS=20log(VOUT/VIN) BW = IHF-A XP1 and XN input XP2 and XN input CMRR=20log(VIN/VOUT) BW = IHF-A,[※X・・・D,E] Input gain 0dB VIN=100mVrms Gin=20log(VOUT/VIN) Input gain +20dB VIN=100mVrms Gin=20log(VOUT/VIN) GAIN=+20～+1dB Mute ON Gmute=20log(VOUT/VIN) BW = IHF-A Volume = 15dB VIN=100mVrms Gv=20log(VOUT/VIN) Volume = -∞dB Gv=20log(VOUT/VIN) BW = IHF-A GAIN & ATT=+15dB～-15dB ATT=-16dB～-47dB ATT=-48dB～-79dB
MUTE
Mute attenuation＊ Maximum gain
13 － -2 -3 -4
VOLUME
Maximum attenuation＊ Attenuation set error 1 Attenuation set error 2 Attenuation set error 3
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
4/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
BLOCK
Item Maximum boost gain
Symbol GB BST
Min. 18
Limit Typ. 20
Max. 22
Unit dB
Condition Gain=+20dB f=100Hz VIN=100mVrms GB=20log (VOUT/VIN) Gain=-20dB f=100Hz VIN=2Vrms GB=20log (VOUT/VIN) Gain=-20～+20dB f=100Hz Gain=+20dB f=1kHz VIN=100mVrms GM=20log (VOUT/VIN) Gain=-20dB f=1kHz VIN=2Vrms GM=20log (VOUT/VIN) Gain=-20～+20dB f=1kHz Gain=+20dB f=10kHz VIN=100mVrms GT=20log (VOUT/VIN) Gain=-20dB f=10kHz VIN=2Vrms GT=20log (VOUT/VIN) Gain=-20～+20dB f=10kHz VIM at THD+N(VOUT)=1％ BW=400-30KHz MIX=OFF GMX=20log(VOUT/VIN) BW=INF-A ATT=+6dB GMX=20log(VOUT/VIN) Fader=15dB VIN=100mVrms GF=20log(VOUT/VIN) Fader = -∞dB GF=20log(VOUT/VIN) BW = IHF-A Gain=+1～+15dB ATT=-1～-15dB ATT=-16～-47dB ATT=-48～-79dB VIN=100mVrms THD+N=1％ BW=400-30KHz Gain 20dB VIN=100mVrms GL=20log(VOUT/VIN) GAIN=+20～+1dB
BASS
Maximum cut gain Gain set error Maximum boost gain
GB CUT GB ERR GM BST
-22 -2 18
-20 0 20
-18 2 22
dB dB dB
MIDDLE
Maximum cut gain Gain set error Maximum boost gain
GM CUT GM ERR GT BST
-22 -2 17
-20 0 20
-18 2 23
dB dB dB
TREBLE
Maximum cut gain Gain set error Input impedance Maximum input voltage Maximum attenuation
GT CUT GT ERR RIN_M VIM_M GMX MIN
-23 -2 19 2.0 －
-20 0 27 2.2 -100
-17 2 35 － -85
dB dB kΩ Vrms dB
MIXING (BD37533FV,BD37534FV)
Maximum gain Maximum boost gain (BD37532FV,BD37533FV,BD37534FV)
GMX MAX
5
7
9
dB
GF BST
13
15
17
dB
FADER / SUBWOOFER
Maximum attenuation＊ Gain set error (BD37532FV,BD37533FV,BD37534FV) Attenuation set error 1 Attenuation set error 2 Attenuation set error 3 Output impedance Maximum output voltage
GF MIN GF ERR GF ERR1 GF ERR2 GF ERR3 ROUT VOM GL MAX GL ERR VL MAX VL OFF
－
-100 0 0 0 0 － 2.2 20 0 3.1 0
-90 2 2 3 4 50 －
dB dB dB dB dB Ω Vrms dB dB V mV
-2 -2 -3 -4 2 17 -2 2.8 -
LOUDNESS
Maximum gain Gain set error Maximum output voltage Output offset voltage
23 2 3.5 100
Level meter (BD37534FV)
VP-9690A(Average value detection, effective value display) filter by Matsushita Communication is used for ＊ measurement. Phase between input / output is same.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
5/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Electrical characteristic curves (Reference data)
Technical Note
50 40
T D (% H +N
1 0 1 0 .1 01 .0 00 .0 1 00 .0 1
1 0 1
Vin[Vrms] Vu o Gain[dB] G in(d a B
5 4 3 2 1 0 -11 0 -2 -3 -4 -5 10 0
Gain=0dB
10kHz 1kHz 100Hz
Iq[mA]
THD+N[%]
30 20 10 0 0 2 4 6 8 10 VCC[V]
0 .1 01 .0 00 .0 1 1 0
1 k
1k 0
10 0k
01 .0
0 .1
1
Vout [Vrms]
Fig.1 Iq vs Vcc
2 5 2 0 1 5 1 0 5 0 -5 -1 0 -1 5 -2 0 -2 5 1 0
BASS GAIN : -20～+20dB /1dB step fo : 60Hz Q : 0.5
V u vs o Fig.2 Thdt (V) Vo
2 5 2 0
Fig.12 Gain vs Freq Fig.3 Gain vs Freq
Frequency [Hz] Fre e cy(Hz) qu n
10 0 1 k 1k 0 Frequency [Hz]
10 0k
2 5 2 0 1 5 1 0 5 0 -5 -1 0 -1 5 -2 0 -2 5 1 0
fo : 60/80/100/120Hz BASS GAIN : ±20dB Q : 0.5
10 0 1 k 1k 0 Frequency [Hz]
10 0k
1 5 1 0 5 0 -5 -1 0 -1 5 -2 0 -2 5 1 0
Q : 0.5/1/1.5/2 BASS GAIN : ±20dB fo : 60Hz
Gain[dB]
Gain[dB]
Gain[dB]
10 0 1 k 1k 0 Frequency [Hz]
10 0k
Fig.4 Bass Gain vs Freq
Fig.5 Bass fo vs Freq
Fig.6 Bass Q vs Freq
2 5 2 0 1 5 1 0 5 0 -5 -1 0 -1 5 -2 0 -2 5 1 0
MIDDLE GAIN : -20～+20dB /1dB step
2 5 2 0 1 5 1 0 5 0 -5 -1 0 -1 5 -2 0 -2 5 1 0
fo : 500/1k/1.5k/2.5kHz
fo : 500Hz Q : 0.75
25 20 15 10 5 0 -5 -10 -15 -20 -25 10 100 1k
Q : 0.75/1/1.25/1.5
Gain[dB]
Gain[dB]
Gain[dB]
MIDDLE GAIN : ±20dB fo : 500Hz
10 0 1 k 1k 0 Frequency [Hz]
10 0k
10 0
1 k
1k 0
10 0k
10k
100k
Frequency [Hz]
Frequency [Hz]
Fig.7 Middle Gain vs Freq
Fig.8 Middle fo vs Freq
25
25
fo : 7.5k/10k/12.5k/15kHz TREBLE GAIN : ±20dB Q : 0.75
Fig.9 Middle Q vs Freq
25 20 15 10 5 0 -5 -10 -15 -20 - 25 10
TREBLE GAIN:-20～+20dB /1dB step fo : 7.5kHz Q : 0.75
20 15 10 5 0 -5 -10 -15 -20
20 15 10 5 0 -5 -10 -15 -20 - 25
Q : 0.75/1.25 TREBLE GAIN : ±20dB fo : 7.5kHz
Gain[dB] Gain (dB)
Gain[dB]
100
1k
10k
100k
- 25 10 100 1k 10k 100k
Gain[dB] Gain (dB)
10
100
1k
10k
100k
Fig.10 Treble Gain vs Freq
Frequency [Hz] Frequency (Hz)
Frequency [Hz]
Fig.11 Treble fo vs Freq
Fig.12Treble Q vs Freq
Frequency [Hz] Frequency (Hz)
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
6/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
1000 出力雑音電圧[uVrms] Output Noise[uVrms] Din-Audio 100 IHF-A
Output Noise[uVrms] 出力雑音電圧 [uVrms]
1000 DIN-Audio 100 IHF-A
出力雑音電圧 [uVrms] Output Noise[uVrms]
1000
DIN-Audio
100
IHF-A
10
10
10
1
-80 -70 -60 -50 -40 -30 -20 -10 0 10 20
1
Volume Gain[dB]
-20 -15 -10 -5 0 5 10 15 20
1 -20 -15 -10 -5 0 5 10 15 20 Middle Gain [dB]
Bass Gain [dB]
Fig.13 Volume Gain vs Noise
Fig.14 Bass Gain vs Noise
Fig.15 Middle Gain vs Noise
1000 出力雑音電圧 [uVrms] DIN-Audio 100 IHF-A
Output Noise[uVrms]
0 -1 0 G Gain[dB] ain (dB -2 0 -3 0 -4 0 -5 0 -6 0
Vo [Vrms] 最大出力[Vrms]
2.5 2.0 1.5 1.0 0.5 0.0
10 0 1 k 1k 0 10 0k
10
1 -20 -15 -10 -5 0 5 10 15 20 Treble Gain [dB]
-7 0 1 0
100
Frequency [Hz]
1000 10000 Rload [ohm] 出力負荷[ohm]
100000
Fig.16 Treble Gain vs Noise
Fre e cy(Hz) qu n Fig.17 CMRR vs Freq
Fig.18 Rload vs Vo
3.5 3 2.5 2
Vout[V]
1.5 1 0.5 0 0 0.5 1
Vin [Vrms]
1.5
2
2.5
3
Fig.19 Advanced Switch 1
Fig.20 Advanced Switch 2
Fig.21 Level Meter Vin vs Vo
Fig.21 : Level Meter function is available only BD37534FV
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
7/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Block diagram and pin configuration
28 27 26 25 24
VCC
Technical Note
23
22
21
20
19
18
17
16
15
VCC/2
G ND
I2C BUS LOGIC
■Fader Gain:0dB～-79ｄB/1dB step ★no pop noise ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fig.22 BD37531FV Descriptions of terminal Terminal Terminal No. Name 1 A1 2 3 4 5 6 7 8 9 10 11 12 13 14 A2 B1 B2 C1 C2 DP1 DN DP2 EP1 EN1 EN2 EP2 TEST1 Description A input terminal of 1ch A input terminal of 2ch B input terminal of 1ch B input terminal of 2ch C input terminal of 1ch C input terminal of 2ch D positive input terminal of 1ch D negative input terminal D positive input terminal of 2ch E positive input terminal of 1ch E negative input terminal of 1ch E negative input terminal of 2ch E positive input terminal of 2ch Test Pin Terminal No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Terminal Name MUTE TEST2 TEST3 OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1 VCC SCL SDA GND FIL Description
External compulsory mute terminal
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k 14
Test Pin Test Pin Subwoofer output terminal of 2ch Subwoofer output terminal of 1ch Rear output terminal of 2ch Rear output terminal of 1ch Front output terminal of 2ch Front output terminal of 1ch Power supply terminal I2C Communication clock terminal I2C Communication data terminal GND terminal VCC/2 terminal
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
8/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
28
27
26
25
24
VCC
23
22
21
20
19
18
17
16
15
VCC/2
G ND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fig.23 BD37532FV Descriptions of terminal Terminal Terminal No. Name 1 A1 2 3 4 5 6 7 8 9 10 11 12 13 14 A2 B1 B2 C1 C2 DP1 DN DP2 EP1 EN1 EN2 EP2 TEST1 Description A input terminal of 1ch A input terminal of 2ch B input terminal of 1ch B input terminal of 2ch C input terminal of 1ch C input terminal of 2ch D positive input terminal of 1ch D negative input terminal D positive input terminal of 2ch E positive input terminal of 1ch E negative input terminal of 1ch E negative input terminal of 2ch E positive input terminal of 2ch Test Pin Terminal No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Terminal Name MUTE TEST2 TEST3 OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1 VCC SCL SDA GND FIL Description
External compulsory mute terminal
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k 14
Test Pin Test Pin Subwoofer output terminal of 2ch Subwoofer output terminal of 1ch Rear output terminal of 2ch Rear output terminal of 1ch Front output terminal of 2ch Front output terminal of 1ch Power supply terminal I2C Communication clock terminal I2C Communication data terminal GND terminal VCC/2 terminal
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
9/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
28
27
26
25
24
VCC
23
22
21
20
19
18
17
16
15
VCC/2
G ND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fig.24 BD37533FV Descriptions of terminal Terminal Terminal No. Name 1 A1 2 3 4 5 6 7 8 9 10 11 12 13 14 A2 B1 B2 C1 C2 DP1 DN DP2 EP1 EN1 EN2 EP2 MIN Description A input terminal of 1ch A input terminal of 2ch B input terminal of 1ch B input terminal of 2ch C input terminal of 1ch C input terminal of 2ch D positive input terminal of 1ch D negative input terminal D positive input terminal of 2ch E positive input terminal of 1ch E negative input terminal of 1ch E negative input terminal of 2ch E positive input terminal of 2ch Mixing input terminal Terminal No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Terminal Name MUTE TEST1 TEST2 OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1 VCC SCL SDA GND FIL Description
External compulsory mute terminal
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k
14
ATT★
Test Pin Test Pin Subwoofer output terminal of 2ch Subwoofer output terminal of 1ch Rear output terminal of 2ch Rear output terminal of 1ch Front output terminal of 2ch Front output terminal of 1ch Power supply terminal I2C Communication clock terminal I2C Communication data terminal GND terminal VCC/2 terminal
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
10/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
28
27
26
25
24
VCC
23
22
21
20
19
18
17
16
15
VCC/2
G ND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute Level meter ★Input Gain
Fig.25 BD37534FV Descriptions of terminal Terminal Terminal No. Name 1 A1 2 3 4 5 6 7 8 9 10 11 12 13 14 A2 B1 B2 C1 C2 DP1 DN DP2 EP1 EN1 EN2 EP2 MIN Description A input terminal of 1ch A input terminal of 2ch B input terminal of 1ch B input terminal of 2ch C input terminal of 1ch C input terminal of 2ch D positive input terminal of 1ch D negative input terminal D positive input terminal of 2ch E positive input terminal of 1ch E negative input terminal of 1ch E negative input terminal of 2ch E positive input terminal of 2ch Mixing input terminal Terminal No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Terminal Name MUTE LRST LOUT OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1 VCC SCL SDA GND FIL Description
External compulsory mute terminal
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k
14
Level meter reset terminal Output terminal for Level meter Subwoofer output terminal of 2ch Subwoofer output terminal of 1ch Rear output terminal of 2ch Rear output terminal of 1ch Front output terminal of 2ch Front output terminal of 1ch Power supply terminal I2C Communication clock terminal I2C Communication data terminal GND terminal VCC/2 terminal
ATT★
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
11/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Timming Chart CONTROL SIGNAL SPECIFICATION (１) Electrical specifications and timing for bus lines and I/O stages
Technical Note
SDA
t
BUF
t t
LOW
t
R
F
t
HD;STA
t
SP
S CL
t
HD;STA
t
HD;DAT
t
HIGH
t
SU;DAT
t
SU;STA
Sr
t
SU;STO
P
P
S
Fig.26
Definition of timing on the I2C-bus
2 Table 1 Characteristics of the SDA and SCL bus lines for I C-bus devices (Unless specified particularly, Ta=25℃, VCC=8.5V)
Parameter 1 2 3 4 5 6 7 8 9 SCL clock frequency Bus free time between a STOP and START condition Hold time (repeated) START condition. After this period, the first clock pulse is generated LOW period of the SCL clock HIGH period of the SCL clock Set-up time for a repeated START condition Data hold time: Data set-up time Set-up time for STOP condition
Symbol ｆSCL tBUF tHD;STA tLOW tHIGH tSU;STA tHD;DAT tSU;DAT tSU;STO
Fast-mode I2C-bus Min. Max. 400 0 1.3 － 0.6 1.3 0.6 0.6 0.06* 120 0.6 － － － － － － －
Unit kHz μS μS μS μS μS μS ns μS
All values referred to VIH min. and VIL max. Levels (see Table 2). * A device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the VIH min. of the SCL signal) in order to bridge the undefined region of the falling edge of SCL. About 7(tHD;DAT), 8(tSU;DAT), make it the setup which a margin is fully in .
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
12/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Table 2
2 Characteristics of the SDA and SCL I/O stages for I C-bus devices
Parameter 10 11 12 13 14 LOW level input voltage: HIGH level input voltage: Pulse width of spikes which must be suppressed by the input filter. LOW level output voltage: at 3mA sink current Input current each I/O pin with an input voltage between 0.4V and 4.5V.
Symbol VIL VIH tSP VOL1 Ii
Fast-mode devices Min. Max. -0.3 1 2.3 5 0 50 0 0.4 -10 10
Unit V V ns V μA
ｔHD;STA ：2us
ｔHD;DAT ：1us
ｔSU;DAT ：1us
ｔSU;STO ：2us
SCL
ｔBUF ：4us ｔLOW ：3us ｔHIGH ：1us
SDA
SCL clock frequency：250kHz
Fig.27 A command timing example in the I2C data transmission
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
13/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
（２）I2C BUS FORMAT MSB S 1bit LSB Slave Address 8bit S Slave Address MSB LSB MSB LSB A Select Address A Data A P 1bit 8bit 1bit 8bit 1bit 1bit = Start conditions (Recognition of start bit) = Recognition of slave address. 7 bits in upper order are voluntary. The least significant bit is “L” due to writing. A = ACKNOWLEDGE bit (Recognition of acknowledgement) Select Address = Select every of volume, bass and treble. Data = Data on every volume and tone. P = Stop condition (Recognition of stop bit)
（３）I2C BUS Interface Protocol 1）Basic form S Slave Address MSB LSB
A MSB
Select Address LSB
A MSB
Data LSB
A
P
2）Automatic increment (Select Address increases (+1) according to the number of data. S Slave Address A Select Address A Data1 A Data2 A ････ DataN A MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB （Example）①Data1 shall be set as data of address specified by Select Address. ②Data2 shall be set as data of address specified by Select Address +1. ③DataN shall be set as data of address specified by Select Address +N-1. 3）Configuration unavailable for transmission (In this case, only Select Address1 is set. S Slave Address A Select Address1 A Data A Select Address 2 A Data AP MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB （Note）If any data is transmitted as Select Address 2 next to data, it is recognized as data, not as Select Address 2. （４）Slave address MSB A6 1 A5 0 A4 0 A3 0 A2 0 A1 0 A0 0 LSB R/W 0
P
80H
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
14/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
（５）Select Address & Data BD37531FV Items Initial setup 1 Initial setup 2 Initial setup 3 Input Selector Input gain Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear Fader Subwoofer Test Mode Bass setup Middle setup Treble setup Bass gain Select Address (hex) 01 02 03 05 06 20 28 29 2A 2B 2C 30 41 44 47 51 MSB D7 Advanced switch ON/OFF 0 0 Full-diff Type Mute ON/OFF D6 0 0 0 0 0 Data D5 D4 D3 Advanced switch time of Input Gain/Volume 0 Tone/Fader/Loudness Subwoofer Output 0 Select 0 Loudness fo 0 0 D2 1 0 0 Input selector Input Gain
Technical Note
LSB D1 D0 Advanced switch time of Mute 0 0 0 1
Middle gain
54
Treble gain Loudness Gain System Reset
57 75 FE
1 0 0 0 Bass Boost/ Cut Middle Boost/ Cut Treble Boost/ Cut 0 1
1 0 0 0 0
Volume Gain / Attenuation Fader Attenuation Fader Attenuation Fader Attenuation Fader Attenuation Fader Attenuation 1 1 1 Bass fo 0 Middle fo 0 Treble fo 0 0
1 0 0 0
1 Bass Q Middle Q 0 Treble Q
1
Bass Gain
0
0
Middle Gain
0
0
Treble Gain Loudness Gain 0
Loudness Hicut 0 0
0
0
0
1
Advanced switch
Note １．In function changing of the hatching part, it works Advanced switch. ２．Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown below. →01→02→03→05→06→20→28→29→2A→2B→2C →30→41→44→47→51→54→57→75
３．For the function of input selector and subwoofer output select etc, it is not corresponded for advanced switch. Therefore, please apply mute on the side of a set when changes these setting. ４． When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF for waiting advanced-mute time.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
15/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
BD37532FV Items Initial setup 1 Initial setup 2 Initial setup 3 Input Selector Input gain Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear Fader Subwoofer Test Mode Bass setup Middle setup Treble setup Bass gain Select Address (hex) 01 02 03 05 06 20 28 29 2A 2B 2C 30 41 44 47 51 MSB D7 Advanced switch ON/OFF LPF Phase 0 Full-diff Type Mute ON/OFF D6 0 0 0 0 0 Data D5 D4 D3 Advanced switch time of Input Gain/Volume 0 Tone/Fader/Loudness Subwoofer Output 0 Select 0 Loudness fo 0 0 D2 1
Technical Note
LSB D1 D0 Advanced switch time of Mute Subwoofer LPF fc 0 Input selector Input Gain 0 1
Middle gain
54
Treble gain Loudness Gain System Reset
57 75 FE
1 0 0 0 Bass Boost/ Cut Middle Boost/ Cut Treble Boost/ Cut 0 1
1 0 0 0 0
Volume Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation 1 1 1 Bass fo 0 Middle fo 0 Treble fo 0 0
1 0 0 0
1 Bass Q Middle Q 0 Treble Q
1
Bass Gain
0
0
Middle Gain
0
0
Treble Gain Loudness Gain 0
Loudness Hicut 0 0
0
0
0
1
Advanced switch
Note １．In function changing of the hatching part, it works Advanced switch. ２．Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown below. →01→02→03→05→06→20→28→29→2A→2B→2C →30→41→44→47→51→54→57→75
３．For the function of input selector and subwoofer output select etc, it is not corresponded for advanced switch. Therefore, please apply mute on the side of a set when changes these setting. ４． When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF for waiting advanced-mute time.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
16/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
BD37533FV Items Select Address (hex) 01 02 03 05 06 20 28 29 2A 2B 2C 30 41 44 47 51 MSB D7 Advanced switch ON/OFF LPF Phase 0 Full-diff Type Mute ON/OFF D6 0 0 0 0 0 Data D5 D4 D3 Advanced switch time of Input Gain/Volume 0 Tone/Fader/Loudness /Mixing Subwoofer Output 0 Select 0 Loudness fo 0 0 D2 1
Technical Note
LSB D1 D0
Initial setup 1 Initial setup 2 Initial setup 3 Input Selector Input gain Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear Fader Subwoofer Mixing Bass setup Middle setup Treble setup Bass gain
Advanced switch time of Mute Subwoofer LPF fc
0 Input selector Input Gain
0
1
Middle gain
54
Treble gain Loudness Gain System Reset
57 75 FE
0 0 0 Bass Boost/ Cut Middle Boost/ Cut Treble Boost/ Cut 0 1
0 0 0 0 0
Volume Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Mixing Gain / Attenuation Bass fo 0 Middle fo 0 Treble fo 0
0 0 0
Bass Q Middle Q 0 Treble Q
Bass Gain
0
0
Middle Gain
0
0
Treble Gain Loudness Gain 0
Loudness Hicut 0 0
0
0
0
1
Advanced switch
Note １．In function changing of the hatching part, it works Advanced switch. ２．Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown below. →01→02→03→05→06→20→28→29→2A→2B→2C →30→41→44→47→51→54→57→75
３．For the function of input selector and subwoofer output select etc, it is not corresponded for advanced switch. Therefore, please apply mute on the side of a set when changes these setting. ４． When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF for waiting advanced-mute time.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
17/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
BD37534FV Select Address (hex) 01 MSB D7 Advanced switch ON/OFF LPF Phase 0 Full-diff Type Mute ON/OFF D6 0 Level Meter RESET 0 0 0 Data D5 D4 Advanced switch time of Input Gain/Volume Tone/Fader/Loudness /Mixing Subwoofer Output Select 0 0 0 D3 0 D2 1 D1 LSB D0
Items
Initial setup 1
Advanced switch time of Mute
Initial setup 2 Initial setup 3 Input Selector Input gain Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear Fader Subwoofer Mixing Bass setup Middle setup Treble setup Bass gain
02 03 05 06 20 28 29 2A 2B 2C 30 41 44 47 51
0 0
Subwoofer LPF fc 0 1
Loudness fo
Input selector Input Gain Volume Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Mixing Gain / Attenuation Bass fo 0 Middle fo 0 Treble fo 0
Middle gain
54
Treble gain Loudness Gain System Reset
57 75 FE
0 0 0 Bass Boost/ Cut Middle Boost/ Cut Treble Boost/ Cut 0 1
0 0 0 0 0
0 0 0
Bass Q Middle Q 0 Treble Q
Bass Gain
0
0
Middle Gain
0
0
Treble Gain Loudness Gain 0
Loudness Hicut 0 0
0
0
0
1
Advanced switch
Note １．In function changing of the hatching part, it works Advanced switch. ２．Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown below. →01→02→03→05→06→20→28→29→2A→2B→2C →30→41→44→47→51→54→57→75
３．For the function of input selector and subwoofer output select etc, it is not corresponded for advanced switch. Therefore, please apply mute on the side of a set when changes these setting. ４． When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF for waiting advanced-mute time.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
18/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Select address 01 (hex) Advanced switch time D6 D5 D4 D3 0.6msec Advanced switch time Advanced 1.0msec of Input gain/Volume Switch 0 0 Tone/Fader/Loudness 1.4msec ON/OFF /Mixing 3.2msec (Mixing is available only BD37533FV, BD37534FV) Time MSB MSB D7 of D2 1
Technical Note
Mute D1 0 0 1 1
LSB D0 0 1 0 1
Advanced switch time of Input LSB gain/Volume/Tone/Fader/Loudness/Mixing D7 D6 D5 D4 D3 D2 D1 D0 4.7 msec 0 0 Advanced 7.1 msec 0 1 Advanced switch Switch 0 0 1 Time of Mute 11.2 msec 1 0 ON/OFF 14.4 msec 1 1 (Mixing is available only BD37533FV, BD37534FV) Time Advanced switch D5 D4 D3 Advanced switch time OFF 0 of Input gain/Volume 0 0 Tone/Fader/Loudness ON 1 /Mixing (Mixing is available only BD37533FV, BD37534FV) Mode D6 Select address 02(hex) fc MSB D7 D6 Subwoofer D5 D4 LPF D3 fc D2 0 0 0 0 1 D1 0 0 1 1 0 Other setting LSB D0 0 1 0 1 0 MSB D7 ON/OFF D2 1 LSB D0
D1
Advanced switch Time of Mute
OFF 55Hz Level 85Hz Subwoofer Output LPF Phase Meter Select 120Hz RESET 160Hz Prohibition (Available only BD37532FV, BD37533FV, BD37534FV) Mode LPF Front Rear Prohibition MSB D7 LPF Phase
0
D6 Level Meter RESET
Subwoofer Output D5 D4 D3 0 0 0 1 0 1 0 1 1
Select D2
D1
LSB D0
Subwoofer LPF fc
Mode HOLD RESET
MSB D7 LPF Phase
D6 0 1
Level Meter RESET D5 D4 D3 D2 Subwoofer output select 0
D1
LSB D0
Subwoofer LPF fc
(Available only BD37534FV) LPF D6 D5 D4 Level 0° 0 Subwoofer output Meter select 180° 1 RESET (Available only BD37532FV, BD37533FV, BD37534FV) Phase MSB D7 Phase D3 0 LSB D0
D2
D1
Subwoofer LPF fc : Initial Condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
19/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Select address 03(hex) f0 250Hz 400Hz 800Hz Prohibition Select address 05(hex) MSB D7 0 D6 0 D5 0 Loudness fo D4 D3 0 0 0 1 1 0 1 1 D2 0
Technical Note
D1 0
LSB D0 1
MSB Input Selector OUTF1 OUTF2 D7 D6 D5 D4 D3 D2 A A1 A2 0 0 0 B B1 B2 0 0 0 C C1 C2 0 0 0 D single DP1 DP2 0 0 0 E1 single EP1 EN1 0 1 0 Full-di E2 single EN2 EP2 0 1 0 ff bias 0 0 type A diff A1 B1 0 1 1 select C diff B2 C2 1 0 0 D diff DP1 DP2 0 0 1 E full diff EP1 EP2 0 1 0 Input SHORT 0 1 0 Prohibition Other setting Input SHORT： The input impedance of each input terminal is lowered from 100kΩ(TYP) to 6 (For quick charge of coupling capacitor) Mode
D1 0 0 1 1 1 1 1 0 1 0 0
LSB D0 0 1 0 1 0 1 1 0 0 0 1
kΩ(TYP).
Mode Negative Input Bias
MSB D7 0 1
D6 0
Full-diff Bias Type Select D5 D4 D3 D2 D1 Input 0 0 Selector
LSB D0
: Initial condition
EP1
Negative input type For Ground – isolation type)
1ch signal input
10
EN1
1ch Differential
11
EN2
12
EP2
2ch signal input
2ch Differential
13
EP1
Bias type For differential amplifier type
1ch signal input
10
EN1
1ch Differential
11
EN2
12
EP2
2ch signal input
2ch Differential
13
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
20/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Select address 06 (hex) MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB Mute ON/OFF 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition
Technical Note
D6
D5
0
0
Input D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 ： 1 Mute D4
Gain D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 1 ： 1
D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 0 ： 1
D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 ： 1
LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 ： 1 LSB D0
Mode OFF ON
MSB D7 0 1
D6 0
D5 0
ON/OFF D3
D2 Input Gain
D1
: Initial condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
21/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Select address 20, 28, 29, 2A, 2B, MSB Gain & ATT D7 0 0 Prohibition ： 0 15dB 0 14dB 0 13dB 0 ： ： -77dB 1 -78dB 1 -79dB 1 1 Prohibition ： 1 -∞dB 1 (About BD37531FV, only 0dB～-∞dB
2C (hex) Vol, Fader D6 D5 0 0 0 0 ： ： 1 1 1 1 1 1 1 1 ： ： 1 0 1 0 1 0 1 0 ： ： 1 1 1 1 are available)
Gain D4 0 0 ： 1 1 1 1 ： 0 0 0 1 ： 1 1
/ Attenuation D3 D2 D1 0 0 0 0 0 0 ： ： ： 0 0 0 0 0 0 0 0 1 0 0 1 ： ： ： 1 1 0 1 1 1 1 1 1 0 0 0 ： ： ： 1 1 1 1 1 1
LSB D0 0 1 ： 0 1 0 1 ： 1 0 1 0 ： 0 1
Select address 30(hex) MSB Mixing D7 D6 D5 0 0 0 0 0 0 Prohibition ： ： ： 0 1 1 7dB 0 1 1 6dB 0 1 1 5dB 0 1 1 ： ： ： ： -77dB 1 1 0 -78dB 1 1 0 -79dB 1 1 0 1 1 0 Prohibition ： ： ： 1 1 1 MIX OFF 1 1 1 (Available only BD37533FV, BD37534FV) Gain & ATT Gain D4 0 0 ： 1 1 1 1 ： 0 0 0 1 ： 1 1 / Attenuation D3 D2 0 0 0 0 ： ： 1 0 1 0 1 0 1 0 ： ： 1 1 1 1 1 1 0 0 ： ： 1 1 1 1 D1 0 0 ： 0 0 1 1 ： 0 1 1 0 ： 1 1 LSB D0 0 1 ： 0 1 0 1 ： 1 0 1 0 ： 0 1
: Initial condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
22/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Select address 41(hex) Q factor 0.5 1.0 1.5 2.0 fo 60Hz 80Hz 100Hz 120Hz Select address 44(hex) Q factor 0.75 1.0 1.25 1.5 fo 500Hz 1kHz 1.5kHz 2.5kHz Select address 47 (hex) Q factor 0.75 1.25 fo 7.5kHz 10kHz 12.5kHz 15kHz MSB D7 0 MSB D7 0 D6 0 Treble D5 D4 Treble fo Treble D4 0 1 0 1 Q factor D3 D2 0 fo D3 0 0 D1 0 LSB D0 0 1 LSB D0 Treble Q factor MSB D7 0 D6 0 Middle D5 D4 Middle fo Q factor D3 D2 0 0 D1 0 0 1 1 LSB D0 0 1 0 1 LSB D0 Middle Q factor MSB D7 0 D6 0 Bass Q D5 D4 Bass fo factor D3 0 D2 0 D1 0 0 1 1 LSB D0 0 1 0 1 LSB D0 Bass Q factor
MSB D7 0
D6 0
D5 0 0 1 1
Bass D4 0 1 0 1
fo D3 0
D2 0
D1
MSB D7 0
D6 0
D5 0 0 1 1
Middle D4 0 1 0 1
fo D3 0
D2 0
D1
D6 0
D5 0 0 1 1
D2 0
D1 0
: Initial condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
23/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Select address 51, 54, 57 (hex) MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB Bass/ 11dB Middle/ 12dB Treble Boost 13dB /cut 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition
D6
0
Bass/Middle/Treble D5 D4 D3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 ： ： 1 1 1 1
Gain D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 ： 1 1
D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 ： 1 1
LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 ： 0 1 LSB D0
Mode Boost Cut
MSB D7 0 1
Bass/Middle/Treble Boost/Cut D6 D5 D4 D3 D2 D1 0 0 Bass/Middle/Treble Gain
: Initial condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
24/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Select address 75 (hex) MSB Mode D7 Hicut1 Hicut2 0 Hicut3 Hicut4 Gain 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition MSB D7
D6 0 0 1 1
D5 0 1 0 1
Loudness D4
Hicut D3 D2 Loudness Gain
D1
LSB D0
D6
D5
0
Loudness Hicut
Loudness D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 ： 1
Gain D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 ： 1
D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 ： 1
D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 ： 1
LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 ： 1
: Initial condition （６）About power on reset At on of supply voltage circuit made initialization inside IC is built-in. Please send data to all address as initial data at supply voltage on. And please supply mute at set side until this initial data is sent. Limit Item Symbol Unit Condition Min. Typ. Max. Rise time of VCC Trise 33 － － usec VCC rise time from 0V to 5V VCC voltage of release Vpor － 4.1 － V power on reset
（７） ）About external compulsory mute terminal Mute is possible forcibly than the outside after input again department, by the setting of the MUTE terminal. Mute Voltage Condition Mode
GND～1.0V MUTE ON 2.3V～VCC MUTE OFF Establish the voltage of MUTE in the condition to have been defined.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
25/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Volume / Fader volume / Mixing attenuation of the details (dB) (dB) D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 +15 0 1 1 1 0 0 0 1 -33 1 0 1 +14 0 1 1 1 0 0 1 0 -34 1 0 1 +13 0 1 1 1 0 0 1 1 -35 1 0 1 +12 0 1 1 1 0 1 0 0 -36 1 0 1 +11 0 1 1 1 0 1 0 1 -37 1 0 1 +10 0 1 1 1 0 1 1 0 -38 1 0 1 +9 0 1 1 1 0 1 1 1 -39 1 0 1 +8 0 1 1 1 1 0 0 0 -40 1 0 1 +7 0 1 1 1 1 0 0 1 -41 1 0 1 +6 0 1 1 1 1 0 1 0 -42 1 0 1 +5 0 1 1 1 1 0 1 1 -43 1 0 1 +4 0 1 1 1 1 1 0 0 -44 1 0 1 +3 0 1 1 1 1 1 0 1 -45 1 0 1 +2 0 1 1 1 1 1 1 0 -46 1 0 1 +1 0 1 1 1 1 1 1 1 -47 1 0 1 0 1 0 0 0 0 0 0 0 -48 1 0 1 -1 1 0 0 0 0 0 0 1 -49 1 0 1 -2 1 0 0 0 0 0 1 0 -50 1 0 1 -3 1 0 0 0 0 0 1 1 -51 1 0 1 -4 1 0 0 0 0 1 0 0 -52 1 0 1 -5 1 0 0 0 0 1 0 1 -53 1 0 1 -6 1 0 0 0 0 1 1 0 -54 1 0 1 -7 1 0 0 0 0 1 1 1 -55 1 0 1 -8 1 0 0 0 1 0 0 0 -56 1 0 1 -9 1 0 0 0 1 0 0 1 -57 1 0 1 -10 1 0 0 0 1 0 1 0 -58 1 0 1 -11 1 0 0 0 1 0 1 1 -59 1 0 1 -12 1 0 0 0 1 1 0 0 -60 1 0 1 -13 1 0 0 0 1 1 0 1 -61 1 0 1 -14 1 0 0 0 1 1 1 0 -62 1 0 1 -15 1 0 0 0 1 1 1 1 -63 1 0 1 -16 1 0 0 1 0 0 0 0 -64 1 1 0 -17 1 0 0 1 0 0 0 1 -65 1 1 0 -18 1 0 0 1 0 0 1 0 -66 1 1 0 -19 1 0 0 1 0 0 1 1 -67 1 1 0 -20 1 0 0 1 0 1 0 0 -68 1 1 0 -21 1 0 0 1 0 1 0 1 -69 1 1 0 -22 1 0 0 1 0 1 1 0 -70 1 1 0 -23 1 0 0 1 0 1 1 1 -71 1 1 0 -24 1 0 0 1 1 0 0 0 -72 1 1 0 -25 1 0 0 1 1 0 0 1 -73 1 1 0 -26 1 0 0 1 1 0 1 0 -74 1 1 0 -27 1 0 0 1 1 0 1 1 -75 1 1 0 -28 1 0 0 1 1 1 0 0 -76 1 1 0 -29 1 0 0 1 1 1 0 1 -77 1 1 0 -30 1 0 0 1 1 1 1 0 -78 1 1 0 -31 1 0 0 1 1 1 1 1 -79 1 1 0 -32 1 0 1 0 0 0 0 0 -∞ 1 1 1 About BD37531FV, Fader Volume only 0dB～-∞dB are available. Mixing is available only BD37533FV, BD37534FV. Adjustable range is +7dB～-∞dB. D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 D3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 D2 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1 D1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 1 D0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1
：Initial condition
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
26/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
About Level meter(available only BD37534FV) （１） The operation of circuit Level meter is a function which gives DC voltage proportional to the size of signal of sound. It detects the peak level of signal and keeps the peak level, so that it is possible to monitor the size of signal by resetting DC voltage kept with suitable interval. （２） The way to reset level meter output Please send reset data through I2C BUS When reset output of level meter：Send D6 = “ 1 “ of select address 02(hex). When cancel of output reset of level meter (HOLD)… → Send D6 = “ 0 “ of select address 02(hex). （３） The settings about period of reset Peak hold operation will start after HOLD data is transmitted. Set the WAIT time after HOLD data transmission according to the frequency bandwidth detected. WAIT time must be set to a minimum of one cycle over the detected frequency bandwidth. Ex) Detected frequency bandwidth is above 40Hz, 『40Hz = 25ms = WAIT time』 Transmission Example by I2C BUS
(RESET) I CBUS
2
(HOLD)
80 02 00
80 1 02 0
40
RESET START LOUT [ V ]
HOLD START
Wait time (25msec) ※fin＝40Hz
detect
t
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
27/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Application circuit
F IL GND SDA SCL VCC OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 10μ 0.1μ 10μ 10μ 28 27 26 25 24
VCC
Technical Note
MUTE
10μ
10μ
10μ
10μ
10μ
TEST3
23 22 21 20 19 18 17
TEST2
16 15
VCC/2
GND
I2C BUS LOGIC
■Fader Gain:0dB～-79ｄB/1dB step ★no pop noise ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k 14
TEST1
2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 10μ 2.2μ 2.2μ 10μ 10μ 2.2μ
Single1 GND Isolation2
Single2
Single3 GND Isolation3
GND Isolation1 or Single4
Full Differential or Single5, Single6
※Single1～3はGND Isolation2,3に切換可能 ※About single input 1～3, it is possible to change （About single input 1～3, it is possible to change from from single input to GND Isolation single input to GND Isolation input 2,3.） input 2,3.
※About GND Isolation1 and Full Differential, it is possible to change from differential input to single input 4～6.
（About GND Isolation1 and Full Differential, it is possible to change from differential input to single input 4～6.）
※GND Isolation1, Full DifferentialはSingle4～6に切換可能
Unit R : [Ω] C : [F]
Fig.28 BD37531FV Notes on wiring ① ② ③ ④ Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND. Lines of GND shall be one-point connected. Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable. Lines of SCL and SDA of I2C BUS shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑤ Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑥ About TEST pin(14,16,17pin), please use with OPEN.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
28/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
F IL
GND
SDA
SCL
OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 VCC 10μ 0.1μ 10μ 10μ 10μ 10μ 10μ 10μ
MUTE
10μ 28 27 26 25 24
VCC
TEST3
23 22 21 20 19 18 17
TEST2
16 15
VCC/2
GND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k 14
TEST1
2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 2.2μ 10μ 2.2μ 2.2μ 10μ 10μ 2.2μ
Single1 GND Isolation2
Single2
Single3 GND Isolation3
GND Isolation1 or Single4
Full Differential or Single5, Single6
Unit R : [Ω] C : [F]
※Single1～3はGND Isolation2,3に切換可能 ※About single input 1～3, it is possible to change （About single input 1～3, it is possible to change from from single input to GND Isolation input 2,3. single input to GND Isolation input 2,3.）
※GND Isolation1, Full DifferentialはSingle4～6に切換可能
※About GND Isolation1 and Full Differential, it is possible
（About GND Isolation1 and Full Differential, it is possible to change from differential input to single input 4～6. to change from differential input to single input 4～6.）
Fig.29 BD37532FV Notes on wiring ① ② ③ ④ Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND. Lines of GND shall be one-point connected. Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable. Lines of SCL and SDA of I2C BUS shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑤ Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑥ About TEST pin(14,15,16pin), please use with OPEN.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
29/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
F IL
GND
SDA
SCL
VCC OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 10μ 0.1μ 10μ 10μ 10μ 10μ 10μ 10μ
MUTE
10μ 28 27 26 25 24
VCC
TEST2
23 22 21 20 19 18 17
TEST1
16 15
VCC/2
GND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute
★Input Gain
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k
14
ATT★
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
10μ
2.2μ
2.2μ
10μ
10μ
2.2μ
2.2μ
Single1 GND Isolation2
Single2
Single3 GND Isolation3
GND Isolation1 or Single4
Full Differential or Single5, Single6
MIN
Unit R : [Ω] C : [F]
※Single1～3はGND Isolation2,3に切換可能 ※About single input 1～3, it is possible to change （About single input 1～3, it is possible to change from from GND input to input 2,3.） single input tosingle Isolation GND Isolation input 2,3.
※GND Isolation1, Full DifferentialはSingle4～6に切換可能 ※About GND Isolation1 and Full Differential, it is possible （About GND Isolation1 and Fullinput to single is possible to change from differential Differential, it input 4～6. to change from differential input to single input 4～6.）
Fig.30 BD37533FV Notes on wiring ① ② ③ ④ Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND. Lines of GND shall be one-point connected. Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable. Lines of SCL and SDA of I2C BUS shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑤ Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑥ About TEST pin(16,17pin), please use with OPEN.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
30/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
FIL
GND
SDA
SCL
VCC OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 LOUT 10μ 0.1μ 10μ 10μ 10μ 10μ 10μ 10μ
LRST
MUTE
10μ 28 27 26 25 24
VCC
23
22
21
20
19
18
17
16
15
VCC/2
GND
I2C BUS LOGIC
■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★no pop noise ・Bass：f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble：f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain：+15dB～-79dB/1dB step ★no pop noise ■Input Gain Gain：+20dB～0dB/1dB step ★no pop noise
Input selector (3 single-end and 2 stereo ISO)
GND ISO amp
100k 1 2 100k 3 100k 4 100k 5 100k 6 100k 7 250k 8
Fader★
★Loudness
★3 Band P-EQ (Tone control) ★Volume/Mute Level meter ★Input Gain
Fader★
Fader★
250k
GND ISO amp
250k 9
Fader★
10
LPF
GND ISO amp
250k 11 250k
Fader★
GND ISO amp
250k 12 13 250k
14
ATT★
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
10μ
2.2μ
2.2μ
10μ
10μ
2.2μ
2.2μ
Unit
Single2 Single3 Single1 ※About single input 1～3, it is possible to change MIN ※About GND Isolation1 and Full Differential, it is possible
from single input to GND Isolation input 2,3. GND Isolation3
to change from differential input to single input 4～6.
R : [Ω] C : [F]
Fig.31 BD37534FV Notes on wiring ① Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND. ② Lines of GND shall be one-point connected. ③ Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable. ④ Lines of SCL and SDA of I2C BUS shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other. ⑤ Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
31/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Interfaces Terminal No. 1 2 3 4 5 6 Terminal Name A1 A2 B1 B2 C1 C2
GN D V cc
Technical Note
Terminal Voltage
V cc
Equivalent Circuit
Terminal Description A terminal for signal input. The input impedance is 100kΩ(typ).
4.25
1 00k
7 8 9 10 11 12 13
DP1 DN DP2 EP1 EN1 EN2 EP2
GN D
Input terminal available to single/Differential mode. The input impedance is 250kΩ(typ).
4.25
2 50ｋ
V cc
A terminal for external compulsory mute. If terminal voltage is High level, the mute is off. And if the terminal voltage is Low level, the mute is on.
15
MUTE
－
1 .65V
GND
VCC
A terminal for fader and Subwoofer output.
18 19 20 21 22 23
OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1
GND
4.25
VCC
A terminal for level meter output (BD37534FV) Output impedance is 10kΩ(typ).
17
LOUT
0～3.3
10k GND
The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
32/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
Terminal No.
Terminal Name
Terminal Voltage
Equivalent Circuit
Terminal Description Power supply terminal.
24
VCC
8.5
Vcc
A terminal for clock input of I2C BUS communication.
25
SCL
－
1.65V
GND
Vcc
A terminal for data input of I2C BUS communication.
26
SDA
－
1.65V
GND
Ground terminal. 27 GND 0
Vcc
50k
Voltage for reference bias of analog signal system. The simple precharge circuit and simple discharge circuit for an external capacitor are built in.
28
FIL
4.25
50k GND
Vcc
A terminal for signal input (BD37533FV, BD37534FV) The input impedance is 27kΩ(typ).
14
MIN
4.25
27k
GND
14 16 17 TEST -
TEST terminal (BD37531FV,BD37532FV,BD37533FV) About BD37531FV and BD37532FV, 14,16,17pin are TEST Pin. About BD37533FV, 16,17pin are TEST Pin.
The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
33/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Notes for use
Technical Note
1. Absolute maximum rating voltage When it impressed the voltage on VCC more than the absolute maximum rating voltage, circuit currents increase rapidly, and there is absolutely a case to reach characteristic deterioration and destruction of a device. In particular in a serge examination of a set, when it is expected the impressing serge at VCC terminal (24pin), please do not impress the large and over the absolute maximum rating voltage (including a operating voltage + serge ingredient (around 14V)). 2. About a signal input part 1）About constant set up of input coupling capacitor In the signal input terminal, the constant setting of input coupling capacitor C(F) be sufficient input impedance RIN(Ω) inside IC and please decide. The first HPF characteristic of RC is composed. G〔dB〕
C〔F〕
0
RIN
〔Ω〕
A(f)
Ｓ
Ｓ
INPUT
f〔Hz〕
A(f)
(2πfCRIN) 2 1 (2πfCRIN) 2
2) About the input selector SHORT SHORT mode is the command which makes switch SSH =ON an input selector part and input impedance RIN of all terminals, and makes resistance small. Switch SSH is OFF when not choosing a SHORT command. A constant time becomes small at the time of this command twisting to the resistance inside the capacitor connected outside and LSI. The charge time of a capacitor becomes short. Since SHORT mode turns ON the switch of SSH and makes it low impedance, please use it at the time of a non-signal. 3. About Mute terminal(15pin) when power supply is off Any voltage shall not be supplied to Mute terminal (15pin) when power-supply is off. Please insert a resistor (about 2.2kΩ) to Mute terminal in series, if voltage is supplied to mute terminal in case. (Please refer Application Circuit Diagram.) 4. About TEST Pin About TEST Pin, please use with OPEN. About BD37531FV and BD37532FV, 14,16,17pin are TEST Pin. About BD37533FV, 16,17pin are TEST Pin.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
34/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
Technical Note
5. About Mixing (BD3753FV,BD37534FV) ・About specification of Fader -∞ at Mixing ON. Mixed signal is added to Main signal after Fader Gain(+15～-79dB) like the following figure. When Fader is made a set up in -∞, the signal after a Mixing signal is added is done with MUTE. Because the -∞ circuit of Fader is in the step after the addition circuit.
Fig.32 About Front Fader and Mixing
・About advanced switching of Mixing Gain/ATT When advanced switching of Mixing Gain/ATT works, Mixing becomes the switching movement that it passed through state of Mixing OFF like B (A present setup of Mixing Gain/ATT → Mixing OFF → A target setup of Mixing Gain/ATT).
A
B
Fader Gain/ATT 0dB → -6dB advanced switching
Mixing Gain/ATT 0dB → -6dB advanced switching
Fig.33 Advanced switching movement when Mixing Gain/ATT is changed
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
35/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
●Thermal Derating Curve
Technical Note
About the thermal design by the IC Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two standpoints of immediate damage and long-term reliability of operation.
Reference data
1.5
SSOP-B28
Measurement condition: ROHM Standard board board Size：70×70×1.6(㎣) material：A FR4 grass epoxy board (3% or less of copper foil area)
Power Dissipation Pd（W）
1.063W 1.0
θja = 117.6℃/W
0.5
0.0 0 25 50 75
85
100
125
150
Ambient Temperature Ta（℃）
Fig.34 Temperature Derating Curve Note) Values are actual measurements and are not guaranteed. Power dissipation values vary according to the board on which the IC is mounted.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
36/37
2010.03 - Rev.A
BD37531FV,BD37532FV,BD37533FV,BD37534FV
● Ordering part number
Technical Note
B
D
3
Part No. 37531 37532 37533 37534
7
5
3
1
F
V
-
E
2
Part No.
Package FV : SSOP-B28
Packaging and forming specification E2: Embossed tape and reel
SSOP-B28
10 ± 0.2 (MAX 10.35 include BURR)
28 15
Tape Quantity Direction of feed
0.3Min.
Embossed carrier tape 2000pcs E2
The direction is the 1pin of product is at the upper left when you hold
7.6 ± 0.3
5.6 ± 0.2
( reel on the left hand and you pull out the tape on the right hand
)
1
14
1.15 ± 0.1
0.15 ± 0.1
0.1
0.1 0.65 0.22 ± 0.1
1pin
(Unit : mm)
Direction of feed
Reel
∗ Order quantity needs to be multiple of the minimum quantity.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
37/37
2010.03 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
R1010A
工商网监
湘ICP备2023018690号
