NJW1201A
2ch Electronic Volume with Dynamic Bass Boost
!GENERAL DESCRIPTION
The NJW1201A is a 2-channel electronic volume with Dynamic Bass Boost. 5+1diff-in 1-out selector. It includes 5+1diff input selector, 1st-volume, 2nd-volume, 3 band Tone, Sound mode, Dynamic Bass Boost. The NJW1201A performs low noise and low distortion characteristics with resistance ladder circuit. 2 All of functions are controlled by I C BUS interface.
!PACKAGE OUTLINE
! FEATURES " Operating Voltage 2 " I C BUS Control " Low output noise " Low THD " 5+1diff Input Selector " Input Gain " 1st-Volume " 2nd-Volume " 3 Band Tone " Sound mode " Sound Gain " Dynamic Bass Boost " Bi-CMOS Technology " Package Outline ! BLOCK DIAGRAM
+7.5 to +10V
-110dBVtyp. 0.01%typ.
NJW1201AFH2
0 to +30dB/2dBstep 0 to -62dB / 1dBstep, MUTE 0 to -28dB / 2dBstep, MUTE 0 to ±14dB/ 2dBstep (Treble,Middle), 0 to ±17.5dB/ 2.5dBstep (Bass) 3 modes (eala, ealaTreble, eala & ealaTreble) 2-level Gains 3-level Gains LQFP52-H2
INPUT3 Bch
INPUT2 Bch
INPUT1 Bch
4.7k
R12
C29
C32
C31
C30
C28
C27
C26
C25
C24
R11
C23
4.7k
C22
220n
4.7u
4.7u
4.7u
4.7n
4.7n
INPUT(Bch)
39
38
37
36
35
34
33
32
31
30
29
28
27
4.7n
22n
47n
Filter terminal for Sound Mode
R10
50k
50k
50k
TRE
MID
0dB
4.7u
40 41
BAS
INPUT4 Bch
50k
C33
+
26 25 24 23
C21 68n C20 1u R9 3k C18 4.7u C17 4.7u
Filter terminal for Sound Mode AGC Smoothing Filter for Dynamic Bass Boost ExtSense terminal. Possible to unconnect
INPUT5 Bch
C34
+
4.7u
50k
50k
43 INPUT6 Bch
C35
4.7u
VREF
INPUT6 Diff INPUT6 Ach
C36
+
4.7u
2ndVolume (0 to -28dB,Mute 2dB step)
+
1stVolume (0 to -62dB,Mute 1dB step)
25k
42
4.7u
C19
44 0 to +30dB 2dB step 45
50k
22 21 20 19 18 17 16 15
OUTPUT(Bch) V+
22u
Sound Mode & DynamicBassBoost
C37
+
4.7u
IC
46 47
50k
R8
C16
SCL
R7
C38
+
4.7u
2
SDA GND
C15 4.7u C14 4.7u
48
50k
49 INPUT5 Ach
C39
OUTPUT(Ach)
+
4.7u
50 51
0dB
25k
TRE
BAS
MID
75k
R6
50k
50k
50k
4.7u
50k
INPUT4 Ach
C40
+
52
14
INPUT(Ach)
1
2
4.7u
3
4.7u
4
4.7u
5
6
7
8
4.7n
9
4.7n
10
22n
11
47n
12
220n
13
C11 4.7u
5.6k
R1
R4
C10
C4
INPUT3 Ach
INPUT2 Ach
INPUT1 Ach
C5
4.7k
Ver.1.0E
4.7k
R2
R3
2.2k
C1
C2
C3
C6
C7
C8
C9
R5
Band PassFilter terminal for Dynamic Bass Boost
220n
220n
C12
C13
–1–
NJW1201A
sPIN CONFIGURATION LQFP52
40 41 42 43 44 45 46 47 48 49 50 51 52 39 38 37 36 35 34 33 32 31 30 29 28 27
26 25 24 23 22 21 20 19 18 17 16 15 14
1
2
3
4
5
6
7
8
9
10
11
12
13
No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Symbol
NC In3A IN2A In1A MonOutA RecOutA VOLInA TONEHA TONEM1A TONEM2A TONEB1A TONEB2A BPF1 BPF2 BPF3 VOL2CAPA OutA GND SDA SCL V+ OutB VOL2CAPB ExtSense INT SurTC Not Connected Ach Input3 Ach Input2 Ach Input1
Function
No
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
Symbol
SRFil TONEB2B TONEB1B TONEM2B TONEM1B TONEHB VOLInB RecOutB MonOutB In1B IN2B IN3B NC IN4B NC IN5B NC IN6B VREF In6Diff In6A NC NC In5A NC In4A
Function
Filter for Sound Mode Bch Bass(Tone) Filter 1 Bch Bass(Tone) Filter 2 Bch Middle(Tone) Filter 1 Bch Middle(Tone) Filter 2 Bch Treble(Tone) Filter Bch 1st Volume Input Bch Rec Output Bch Monitor Output Bch Input1 Bch Input2 Bch Input3 Not Connected Bch Input4 Not Connected Bch Input5 Not Connected Bch Input6 Reference Voltage Negative Input for Input6 Ach Input6 Not Connected Not Connected Ach Input5 Not Connected Ach Input4
Ach Monitor Output Ach Rec Output Ach 1 Volume Input Ach Treble(Tone) Filter Ach Middle(Tone) Filter 1 Ach Middle(Tone) Filter 2 Ach Bass(Tone) Filter 1 Ach Bass(Tone) Filter 2 Filter 1 for DBB Filter 2 for DBB Filter 3 for DBB Ach DC coupling for 2nd Volume Ach Output Ground I2C DATA I2C CLOCK Supply Voltage Bch Output Bch 2nd Volume DC coupling AGC Boost Level for DBB AGC Smoothing Filter for DBB Filter for Sound Mode
st
–2–
NJW1201A
! ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL
Power Supply Voltage Power Dissipation Maximum Input Voltage O perating Temperature Range Storage Temperature Range V+ PD VIMAX Topr Tstg
RATING
10.5 1200 (Note1) 0 ~ V+ (Note2) -20 ~ +75 -40 ~ +125
UNIT
V mW V °C °C
(Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting (Note2) Don’t put Input Voltage more than Power Supply Voltage.
!ELECTRICAL CHARACTERISTICS
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=1Vrms, f=1kHz,1stVOL=0dB, all controls flat unless otherwise specified)
+
PARAMETER Operating Voltage Supply Current Reference Voltage
Volume Input Resistance Maximum Input Voltage Maximum Output Voltage Maximum Input Gain Maximum Gain Mute Level Channel Balance Total Harmonic Distortion Output Noise Voltage 1 Output Noise Voltage 2 Cross Talk Channel Separation
SYMBOL
V+ IDD VREF RINVOL VIM VOM GVINMAX GVMAX Mute GCB THD+N VNO1 VNO2 CT CS
TEST CONDITION
No signal No signal No signal 1st Volume=-20dB THD=1% THD=1% Input Gain=+30dB Vin=50mVrms
MIN.
7.5 4.0 2.0 2.0 -1
TYP.
9.0 12 4.5 26.5 2.4 2.4 30 0 -100 0 0.01 -100 (10) -110 (3) -
MAX.
10.0 18 5.0 1 -90 1 0.05 -94 (20) -100 (10) -80 -80
UNIT
V mA V kΩ Vrms Vrms dB dB dB dB % dBV (uVrms) dBV (uVrms) dB dB
1st Volume = Mute 2nd Volume = Mute VO=0.5Vrms, BW=400Hz-30kHz Rg=0Ω, Filter : A-Weighted 1st Volume = Mute 2nd Volume=Mute Rg=0Ω, Filter : A-Weighted Selected Input : Rg=0Ω
-1 -
Unselected Input : Signal
Rg=0Ω
♦Tone Control
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER High Frequency Boost High Frequency Cut Mid Frequency Boost Mid Frequency Cut Low Frequency Boost Low Frequency Cut
SYMBOL
HFBST HFCUT MFBST MFCUT LFBST LFCUT
TEST CONDITION
TREB=”1111”, f=10kHz TREB=”0111”, f=10kHz MIDD=”1111”, f=1kHz MIDD=”0111”, f=1kHz BASS=”1111”, f=100Hz BASS=”0111”, f=100Hz
MIN.
11.5 -16.5 11.5 -16.5 15.0 -20.0
TYP.
14.0 -14.0 14.0 -14.0 17.5 -17.5
MAX.
16.5 -11.5 16.5 -11.5 20.0 -15.0
UNIT
dB dB dB dB dB dB
–3–
NJW1201A
♦ Sound mode Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SOUND MODE 1 SOUND MODE 2 SOUND MODE 3
SYMBOL
GVm1 GVm2 GVm3
TEST CONDITION
SOUNDMODE=”01” Ain-Aout, f=10kHz SOUNDMODE=”10” Ain-Aout, SOUNDMODE=”11” Ain-Aout
MIN.
-
TYP.
4.0 4.0 4.5
MAX.
-
UNIT
dB dB dB
♦ Sound Gain Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.1Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
SOUND GAIN 1
SYMBOL
GVS1
TEST CONDITION
SOUNDGAIN =”0” SOUNDMODE=”10” Ain-Aout, SOUNDGAIN =”1” SOUNDMODE=”10” Ain-Aout,
MIN.
-
TYP.
4.0
MAX.
-
UNIT
dB
SOUND GAIN 2
GVS2
-
6.5
-
dB
♦ Dynamic Bass Boost Characteristics
+
(Ta=25°C,V =9V, Rg=0Ω, RL=47kΩ, Vin=0.05Vrms, f=1kHz,all controls flat unless otherwise specified)
PARAMETER
DBB Gain 1 DBB Gain 2 DBB Gain 3
SYMBOL
GVSDBB1 GVSDBB2 GVSDBB3
TEST CONDITION
DBBGain=”01”, (A+B)in-Aout DBBGain=”10”, (A+B)in-Aout DBBGain=”11”, (A+B)in-Aout
MIN.
-
TYP.
7.5 10.5 14.0
MAX.
-
UNIT
dB dB dB
–4–
NJW1201A
!TIMING ON THE I C BUS (SDA,SCL)
2
SDA
tf
tr
tSU:DAT
tf
tHD:STA
tSP
tr
tBUF
SCL
tHD:STA
tSU:STA
tSU:STO
S
tLOW
tHD:DAT
tHIGH
Sr
P
S
!CHARACTERISTICS OF I/O STAGES FOR I2C BUS (SDA,SCL)
I C BUS Load Conditions STANDARD MODE : FAST MODE :
2
Pull up resistance 4kΩ (Connected to +5V), Load capacitance 200pF (Connected to GND) Pull up resistance 4kΩ (Connected to +5V), Load capacitance 50pF (Connected to GND)
PARAMETER
Low Level Input Voltage High Level Input Voltage Low level output voltage (3mA at SDA pin) Input current each I/O pin with an input voltage between 0.1VDD and 0.9VDDmax
SYMBOL
VIL VIH VOL Ii
Standard mode
MIN. 0.0 2.7 0 -10 TYP. MAX. 1.5 5.0 0.4 10 MIN. 0.0 2.7 0 -10
Fast mode
TYP. MAX. 1.5 5.0 0.4 10
UNIT
V V V µA
–5–
NJW1201A
!CHARACTERISTICS OF BUS LINES (SDA,SCL) FOR I C-BUS DEVICES PARAMETER
SCL clock frequency Hold time (repeated) START condition. Low period of the SCL clock High period of the SCL clock Set-up time for a repeated START condition Data hold time
NOTE)
2
SYMBOL
fSCL tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tr tf tSU:STO tBUF Cb VnL
Standard mode
MIN. 4.0 4.7 4.0 4.7 0 250 4.0 4.7 0.5 1 TYP. MAX. 100 1000 300 400 MIN. 0.6 1.3 0.6 0.6 0 100 0.6 1.3 0.5 1
Fast mode
TYP. MAX. 400 300 300 400 -
UNIT
kHz µs µs µs µs µs ns ns ns µs µs pF V
Data set-up time Rise time of both SDA and SCL signals Fall time of both SDA and SCL signals Set-up time for STOP condition Bus free time between a STOP and START condition Capacitive load for each bus line Noise margin at the Low level Noise margin at the High level
VnH
V
Cb ; total capacitance of one bus line in pF.
NOTE). Data hold time : tHD:DAT Please hold the Data Hold Time (tHD:DAT) to 300ns or more to avoid status of unstable at SCL falling edge. The SDA block in the NJW1201A does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not providing a hold time of at least 300nsec for the SDA in the master device. The time-consists of the data-delay-circuit of the SDA terminal are as follows. (a) Low level $ High level : (b) High level $ Low level : TLH ≈ RP*CD THL ≈ RD*CD
In addition, Schottky barrier diode (SBD) influences a Low level at the Acknowledge. Therefore choose the low forward voltage (Vf) as much as possible.
VDD RP RP SCL
MASTER
SBD
SDA
NJW1201A
RD
CD
–6–
NJW1201A
! DEFINITION OF I C REGISTER 2 ♦I C BUS FORMAT
MSB LSB MSB LSB MSB LSB
2
S
1bit
Slave Address
8bit
A
1bit
Select Address
8bit
A
1bit
Data
8bit
A
1bit
P
1bit
♦SLAVE ADDRESS
S: Starting Term A: Acknowledge Bit P: Ending Term
Slave Address MSB 1 0 0 0 1 0 0 LSB 0
Hex 88(h)
♦CONTROL REGISTER TABLE
The select address sets each function (Input Selector, Input Gain, 1 -Volume, Tone Control, 2 -Volume, ealaSurrond, Dynamic Bass Boost, Other Settings). The auto increment function cycles the select address as follows. 00H→01H→02H→03H→04H→00H Select Address 00H 01H 02H 03H 04H BIT D7 * * D6 D5 D4 D3 D2 D1 D0 INPUT SELECTOR * TREB (0 to ±14dB/ 2dBstep) BASS (0 to ±17.5dB/ 2.5dBstep)
SOUND GAIN
st
nd
*
INPUT GAIN (0 to 30dB / 2dBstep) 1st-VOL (0 to -55dB / 1dBstep, MUTE) MIDD (0 to ±14dB/ 2dBstep) 2nd-VOL (0 to -28dB / 2dBstep, MUTE) DBB GAIN (3 levels) DBB SENSE (3 levels) SOUND MODE (3 modes) * : Don’t Care
♦CONTROL REGISTER DEFAULT VALUE Control register default value is all “0”.
Select Address 00H 01H 02H 03H 04H BIT D7 0 0 0 0 0 D6 0 0 0 0 0 D5 0 0 0 0 0 D4 0 0 0 0 0 D3 0 0 0 0 0 D2 0 0 0 0 0 D1 0 0 0 0 0 D0 0 0 0 0 0
–7–
NJW1201A
!INSTRUCTION CODE a) INPUT SELECTOR, INPUT GAIN SETTING
Select Address 00H BIT D7 * D6 D5 INPUT SELECTOR D4 D3 D2 D1 D0 INPUT GAIN
•INPUT SELECTOR : INPUT 1 to 5 (Single Ended), INPUT 6 (Single Ended/Differential), Mute •INPUT GAIN : 0 to +30 dB (2dB/Step)
b) HI PATH FILTER SWITCH, 1 VOLUME
Select Address 01H
st
st
BIT D7 * D6 * D5 D4 D3
st
D2
D1
D0
1 VOLUME
•1 Volume : 0 to -62 dB (1dB/Step) , MUTE
c) TREBLE, MIDDLE
Select Address 02H •TREB : 0 to ±14dB/ 2dBstep • MIDD : 0 to ±14dB/ 2dBstep BIT D7 D6 TREB D5 D4 D3 D2 MIDD D1 D0
d) BASS, 2
Select Address 03H
nd
VOLUME
BIT D7 D6 BASS D5 D4 D3 D2 2
nd
D1 VOLUME
D0
•BASS : 0 to ±17.5dB/ 2.5dBstep nd •2 VOLUME : 0 to -28dB/ 2dBstep , MUTE
e) SOUND ENHANCEMENT, DYNAMIC BASS BOOST
Select Address 04H BIT D7 * D6 D5 D4 D3 D2 D1 D0
SOUND SOUND MODE GAIN •SOUND GAIN : Sound Gain has 2 levels •SOUND MODE : Sound mode has 3 types •DBB GAIN : Dynamic Bass Boost Gain has 3 levels •DBB SENSE : This means detect level of input signal.
DBB GAIN
DBB SENSE
–8–
NJW1201A
!INPUT SELECTOR (Select Address : 00H)
00H D6 INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 (Single Ended) INPUT 6 (Differential) MUTE 0 0 0 0 1 1 1 1 D5 0 0 1 1 0 0 1 1 D4 0 1 0 1 0 1 0 1 *: Default Value
!INPUT GAIN (Select Address : 00H)
00H Gain(dB) 0* +2 +4 +6 +8 +10 +12 +14 +16 +18 +20 +22 +24 +26 +28 +30 D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D2 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 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 *: Default Value
–9–
NJW1201A
!1 VOLUME (Select Address : 01H)
01H Gain (dB) 0 -1 -2 -3 -4 -5 -6 -7 -8 %%% -16 %%% -32 %%% -48 %%% -56 -57 -58 -59 -60 -61 -62 MUTE 0 %%% 0 0 0 0 0 0 0 0 0 %%% 0 0 0 0 0 0 0 0 1 %%% 0 0 0 0 0 0 0 0 0 1 1 %%% 1 %%% 1 1 1 1 0 0 0 0 1 %%% 1 1 0 0 1 1 0 0 1 %%% 1 0 1 0 1 0 1 0 1 0 1 %%% 1 1 1 D5 1 1 1 1 1 1 1 1 1 D4 1 1 1 1 1 1 1 1 1 D3 1 1 1 1 1 1 1 1 0 %%% 1 1 1 D2 1 1 1 1 0 0 0 0 1 D1 1 1 0 0 1 1 0 0 1 D0 1 0 1 0 1 0 1 0 1
st
*: Default Value
– 10 –
NJW1201A
!TREBLE (Select Address : 02H)
02H Gain(dB) +14 +12 +10 +8 +6 +4 +2 0 0* -2 -4 -6 -8 -10 -12 -14 D7 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D6 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 D5 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 D4 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 *: Default Value
!MIDDLE (Select Address : 02H)
02H Gain(dB) +14 +12 +10 +8 +6 +4 +2 0 0* -2 -4 -6 -8 -10 -12 -14 D3 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D2 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 D1 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 D0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 *: Default Value
– 11 –
NJW1201A
!BASS (Select Address : 03H)
03H Gain(dB) +17.5 +15 +12.5 +10 +7.5 +5 +2.5 0 0* -2.5 -5 -7.5 -10 -12.5 -15 -17.5 D7 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D6 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 D5 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 D4 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 *: Default Value
!2
nd
VOLUME (Select Address : 03H)
03H Gain(dB) 0* -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 -22 -24 -26 -28 MUTE D3 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D2 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 D0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 *: Default Value
– 12 –
NJW1201A
!SOUND GAIN (Select Address : 04H)
SOUND GAIN Gain Lo* Gain Hi 04H D6 0 1 *: Default Value
!Sound Enhancement Mode (Select Address : 04H)
SOUND MODE OFF* ealaTreble eala eala & ealaTreble 04H D5 0 0 1 1 D4 0 1 0 1 *: Default Value
!Dynamic Bass Boost Gain (Select Address : 04H)
DBB GAIN OFF* Gain 1 Gain 2 Gain 3 04H D3 0 0 1 1 D2 0 1 0 1 *: Default Value
! Dynamic Bass Boost Sense (Select Address : 04H)
DBB SENSE Sense 1* Sense 2 Sense 3 Sense 4 04H D1 0 0 1 1 D0 0 1 0 1 *: Default Value
– 13 –
NJW1201A
!TERMINAL DESCRIPTION
No.
2 3 4 36 37 38 40 42 44 47 50 52
SYMBOL
IN3A IN2A IN1A IN1B IN2B IN3B IN4B IN5B IN6B IN6A IN5A IN4A
FUNCTION
Ach Input3 Ach Input2 Ach Input1 Bch Input1 Bch Input2 Bch Input3 Bch Input4 Bch Input5 Bch Input6 Ach Input6 Ach Input5 Ach Input4
EQUIVALENT CIRCUIT
VOLTAGE
18.5k
V+ / 2
31.5k
5 6 13 15 17 22 34 35
MonOutA RecOutA BPF1 BPF3 OutA OutB RecOutB MonOutB
Ach Monitor Output Ach Rec Output Filter 1 for DBB Filter 3 for DBB Ach Output Bch Output Bch Rec Output Bch Monitor Output
FB 50
V+ / 2
7 33
VOLInA VOLInB
Ach 1 Volume Input st Bch 1 Volume Input
st
9.3k
V+ / 2
15.7k
8 10 12 28 30 32
TONEHA TONEM2A TONEB2A TONEB2B TONEM2B TONEHB
Ach Treble(Tone) Filter Ach Middle(Tone) Filter 2 Ach Bass(Tone) Filter 2 Bch Bass(Tone) Filter 2 Bch Middle(Tone) Filter 2 Bch Treble(Tone) Filter
4k (PIN.8,32) 5.4k (PIN.10.30) 1.7k (PIN.12.28)
V+ / 2
– 14 –
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
9 11 29 31
TONEM1A TONEB1A TONEB1B TONEM1B
Ach Middle(Tone) Filter 1 Ach Bass(Tone) Filter 1 Bch Bass(Tone) Filter 1 Bch Middle(Tone) Filter 1
V+ / 2
14
BPF2
Filter 2 for DBB
V+ / 2
16 23
VOL2CAPA VOL2CAPB
Ach DC coupling for 2 Volume nd Bch DC coupling for 2 Volume
nd
50
5.4k
V+ / 2
18
GND
ground
-
0
– 15 –
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
VREG 5V
V+ 9V
19 20
SDA SCL
I2C DATA I2C CLOCK
4k
-
8k
SCL:GND SDA:ACK
21
V+
Supply Voltage
-
V+
50
24
ExtSense
AGC Boost Level for DBB
V+ / 2
36k
0.5u 2k
50
25
INT
AGC Smoothing Filter for DBB
-
– 16 –
NJW1201A
!TERMINAL DESCRIPTION
No.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
26
SurTC
Filter for Sound Mode
FB
V+ / 2
16k 10k
27
SRFil
Filter for Sound Mode
FB
V+ / 2
16k 16k
212k
45
VREF
Reference Voltage
V+ / 2
212k
46
IN6Diff
Negative Input for Input6
63k
V+ / 2
37k
– 17 –
! TEST Circuit
NJW1201A
– 18 –
INPUT6 Diff INPUT4 Ach INPUT6 Bch INPUT5 Bch INPUT4 Bch INPUT5 Ach INPUT6 Ach
VREF
C40
C39
C38
C37
C36
C35
C34
C33
+
4.7u
4.7u
4.7u
4.7u
4.7u
4.7u
4.7u
4.7u
52
51
50
49
48
47
46
45
44
43
42
41
40
INPUT(Ach)
50k 50k 50k
INPUT(Bch)
39
1
50k 50k C1 50k 50k
C32 4.7u C31
2
INPUT3 Ach
4.7u C2 50k 50k
INPUT3 Bch 38
3
INPUT2 Ach
4.7u C3 50k 50k
4.7u C30
INPUT2 Bch 37
4
INPUT1 Ach
4.7u 50k
4.7u 50k
INPUT1 Bch 36
5
MonOut Ach
C4 4.7u 0dB
0 to +30dB 2dB step
0dB
MonOut Ach 35
C29
6
RecOut Ach
25k
RecOut Ach 34
25k
7
VOLIn Ach
C6
1stVolume (0 to -62dB,Mute 1dB step)
VOLIn Ach 33
C27
32
8
4.7n C7
TRE MID
TRE MID
4.7n C26
31
9
R2 4.7k C8
4.7n
4.7n 22n C25
R12 4.7k
10
30
22n C9
Sound Mode & DynamicBassBoost
R3 47n C10 4.7k
BAS
2ndVolume (0 to -28dB,Mute 2dB step)
BAS
C24
11 12
29 28
47n C23 220n
R11 4.7k
220n
BPF1 13
C11 2.2u
2
C22
27
IC
14 15 16 17 18 19 20 21 22 23 24 25 26
4.7n
R4 10k R6 47k 15n
68n
Filter terminal for Sound Mode
SCL
SDA
4.7u C14
4.7u C15
4.7u
4.7u 1u C20
C17
C18
C21
R7
R8 22u
GND
C13
C16
V+
Filter terminal for Sound Mode
AGC Smoothing Filter for Dynamic Bass Boost
OUTPUT(Ach)
OUTPUT(Bch)
ExtSense terminal.
Low PassFilter terminal for Dynamic Bass Boost
NJW1201A
! Application Circuit
INPUT3 Bch INPUT2 Bch INPUT1 Bch
4.7k
R12
C29
C32
C31
C30
C28
C27
C26
C25
C24
R11
C23
4.7k
C22
220n
4.7u
4.7u
4.7u
4.7n
4.7n
INPUT(Bch)
39
38
37
36
35
34
33
32
31
30
29
28
27
4.7n
22n
47n
Filter terminal for Sound Mode
R10
50k
50k
50k
TRE
0dB
4.7u
BAS
MID
INPUT4 Bch
40 41
50k
C33
+
26 25 24 23
C21 68n C20 1u R9 3k C18 4.7u C17 4.7u
Filter terminal for Sound Mode AGC Smoothing Filter for Dynamic Bass Boost
4.7u C19
INPUT5 Bch
C34
+
4.7u
50k
50k
43 INPUT6 Bch
C35
4.7u
VREF
INPUT6 Diff INPUT6 Ach
C36
+
4.7u
2ndVolume (0 to -28dB,Mute 2dB step)
+
1stVolume (0 to -62dB,Mute 1dB step)
25k
42
ExtSense terminal. Possible to unconnect
44 0 to +30dB 2dB step 45
50k
22 21 20 19 18 17 16 15
OUTPUT(Bch) V+
22u
C37
Sound Mode & DynamicBassBoost
+
4.7u
C38
IC
46 47
50k
R8
C16
SCL
R7
+
4.7u
2
SDA GND
C15 4.7u C14 4.7u
48
50k
49 INPUT5 Ach
C39
OUTPUT(Ach)
+
4.7u
50 51
0dB
25k
TRE
BAS
MID
75k
R6
50k
50k
50k
4.7u
50k
INPUT4 Ach
C40
+
52
14
INPUT(Ach)
1
2
4.7u
3
4.7u
4
4.7u
5
6
7
8
4.7n
9
4.7n
10
22n
11
47n
12
220n
13
C11 4.7u
R4 5.6k
R1
C10
C4
INPUT3 Ach
INPUT2 Ach
INPUT1 Ach
C5
4.7k
4.7k
R2
R3
2.2k
C6
C7
C8
C9
C1
C2
C3
R5
Band PassFilter terminal for Dynamic Bass Boos t
220n
220n
C12
C13
– 19 –
NJW1201A
s APPLICATION NOTE
[1] Input Selector (1-1) Single ended stereo Inputs All single ended inputs (pin.2,3,4,36,37,38,40,42,44,47,50,52) have an input impedance of 50kΩ.
(1-2) Differential Input
In6A(pin.47)/In6B(pin.44) can use as single-ended input or differential input. In case of differential input, In6A/In6B are positive input have an input impedance of 50kΩ.
And In6diff(pin.46) is negative input terminal has an input impedance of 50kΩ.
To improve CMRR at input, please connect the same value of coupling capacitor to In6A/In6B/In6diff. [2] Monitor out(pin.5,35), Rec out(pin6,34), VOLIn(pin.7,33) Hi-path filter (Sallen-Key) can be made up with these terminals.
R2=26.5k
f0 =
1 2π R1R2C1C2 C1C2 C1 + C2 R2 R1R2C1C2
Q=
MonitorOut(PIN:5,35) RecOut(PIN:6,34) VOLIn(PIN:7,33)
R1 C1 C2
– 20 –
NJW1201A
s APPLICATION NOTE
[3] TONE control (a)Bass (a-1)Boost
IN OUT
(a-2)Cut
IN OUT
R2
R1
R1
R2
TONE-B2(PIN:12,28)
TONE-B1(PIN:11,29)
TONE-B1(PIN:11,29)
TONE-B2(PIN:12,28)
C2
C1 R3
C1
C2 R3
f0 =
1 2π ( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2
( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2 R 2 ∗ C 2 + R3 ∗ (C1 + C 2)
(Hz)
Q=
G 0 = ±20 Log
(R1 + R 2 + R 3) ∗ C 2 + R3 ∗ C1 R 2 ∗ C 2 + R 3 ∗ (C1 + C 2 )
(dB)
Table.a-1 : Internal resistance in each Gain.
Gain ±17.5dB ±15dB ±12.5dB ±10dB ±7.5dB ±5dB ±2.5dB ±0dB
R1 48.3kΩ 45.8kΩ 42.5kΩ 38.1kΩ 32.2kΩ 24.4kΩ 13.9kΩ 0Ω
R2 1.7kΩ 4.2kΩ 7.5kΩ 11.9kΩ 17.8kΩ 25.6kΩ 36.1kΩ 50kΩ
– 21 –
NJW1201A
(b)Middle (b-1)Boost
IN OUT
(b-2)Cut
IN OUT
R2
R1
R1
R2
TONE-M2(PIN:10,30)
TONE-M1(PIN:9,31)
TONE-M1(PIN:10,30)
TONE-M2(PIN:9,31)
C2
C1 R3
C1
C2 R3
f0 =
1 2π ( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2 ( R1 + R 2) ∗ R3 ∗ C1 ∗ C 2 R 2 ∗ C 2 + R3 ∗ (C1 + C 2)
(Hz)
Q=
G 0 = ±20 Log
(R1 + R 2 + R 3) ∗ C 2 + R3 ∗ C1 R 2 ∗ C 2 + R 3 ∗ (C1 + C 2 )
(dB)
Table.a-1 : Internal resistance in each Gain.
Gain ±14dB ±12dB ±10dB ±8dB ±6dB ±4dB ±2dB ±0dB
R1 44.6kΩ 41.7kΩ 38.1kΩ 33.6kΩ 27.8kΩ 20.6kΩ 11.5kΩ 0Ω
R2 5.4kΩ 8.3kΩ 11.9kΩ 16.4kΩ 22.2kΩ 29.4kΩ 38.5kΩ 50kΩ
– 22 –
NJW1201A
(c)Treble (c-1)Boost
IN OUT
(c-2)Cut
IN OUT
R2
R1
R1
R2
TONE-H(PIN:8,32)
TONE-H(PIN:8,32)
C1
C1
R1 1 G V = ± 20 Log 1 + × 2 R2 1 + (1 / (2π × f × C 1 × R 2 ))
(dB)
Table.a-1 : Internal resistance in each Gain.
Gain ±14dB ±12dB ±10dB ±8dB ±6dB ±4dB ±2dB ±0dB
R1 22kΩ 20.2kΩ 18.4kΩ 16.1kΩ 13.3kΩ 9.8kΩ 5.5kΩ 0Ω
R2 4kΩ 5.8kΩ 7.6kΩ 9.9kΩ 12.7kΩ 16.2kΩ 20.5kΩ 26kΩ
– 23 –
NJW1201A
s APPLICATION NOTE
[4] Sound Mode
Filter terminal for Sound Mode SurTC (pin.26) C21
Sound-Intput Ach
Sound-Output Ach
A
*Hi *Lo
Sound Filter
*ealaRebirth *eala *ealaRebir th & eala
Sound-Intput Bch
SRFil (pin.27)
Sound-Output Bch C22
Filter terminal for Sound Mode
There are 3 sound modes in NJW120A. 1) ealaRebirth :This is a sound effect, this is suitable for compressed Audio. 2) eala :This is a comfortable surround that makes much of sound location. 3) ealaRebirth & eala :This is a sound effect that be suitable for various music. These sound modes have 2-level gain effects. Sound modes and 2-level gain are switched by I2C command. And, Frequency effects of sound mode depends on C21,C22. Please choose your suitable value of C21,C22 for Audio set. Recommendation is C21=68nF, C22=4.7nF. Frequency Response of Sound mode is shown in next page. Regarding Pop noise reduction when sound mode and sound gain switched NJW1201A doesn’t cover about this. *Notice: About NJW1201 Regarding Pop noise reduction when sound mode and sound gain switched, *Sound mode swtiched: Pop noise reduction is cared by capacitor pin.26 *Sound gain switched: Pop noise reduction is not cared
– 24 –
NJW1201A
Gain vs Frequency (ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10 10
Gain vs Frequency (ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC C21:68nF , C22=Sweep
10nF
C21:Sweep , C22=4.7nF
47n,68n,100n,150nF 5 5
6.8nF
Gain (dB)
0
Gain (dB)
0 3.3nF 4.7nF -5 10 100 1000 10000 100000 -5 10 100 1000 10000 100000
Frequency (Hz)
Frequency (Hz)
Gain vs Frequency (eala)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10 10
Gain vs Frequency (eala)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC C21:68nF , C22=Sweep
C21:Sweep , C22=4.7nF
150nF 100nF 5 5
4.7nF 3.3nF
Gain (dB)
0 47nF 68nF
Gain (dB)
0 6.8nF
10nF
-5 10 100 1000 10000 100000
-5 10 100 1000 10000 100000
Frequency (Hz)
Frequency (Hz)
Gain vs Frequency (eala+ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10
Gain vs Frequency (eala+ealaRebirth)
V+=9V, Vin(Ach)=0.1Vrms, Vo(Ach), Ta=25oC
10
C21:Sweep , C22=4.7nF
150nF 100nF 5 5
C21:68nF , C22=Sweep
4.7nF
3.3nF
Gain (dB)
0 47nF 68nF
Gain (dB)
0
10nF 6.8nF
-5 10 100 1000 10000 100000
-5 10 100 1000 10000 100000
Frequency (Hz)
Frequency (Hz)
– 25 –
NJW1201A
s APPLICATION NOTE
[5] Dynamic Bass Boost (DBB) 5-1. Block diagram of DBB
INT(pin.25)
Sound-Intput Ach EXT Filter (inverting type) A GC A
3-levels A=1, 0.6, 0.33 Normally Gain=1
Sound-Output Ach
Sound-Intput Bch
BPF1(pin.13) BPF2(pin.14) BPF3(pin.15)
Sound-Output Bch
Dynamic Bass Boost (DBB) is a system that changes boost gain by changing of input level. The boost gain has 3-levels, this is controlled by I2C. AGC circuit changes the boost gain by detecting the input signal.
5-2.Setting of EXT Filter The Frequency Response of DBB can be changed in EXT Filter. EXT Filter is composed of BPF1(pin.13), BPF2(pin.14), BPF3(pin.15). Below are examples of filter structure. a) BPF
E XT Filter (inverting type)
R GV = 20 log 3 2R 2
fc = 1 2πC (R1 // R2 )R3
BPF1
BPF2
BPF3:Output
13
DC Cut
14 R3
15
Q=
R2
C C
1 R3 2 R1 // R2
R1
– 26 –
NJW1201A
b) LPF (-6dB/Oct)
EXT Filter (inverting type)
R GV = 20 log 2 R 1
fc = 1 2πCR2
BPF1 R1 BPF1
BPF2
BPF3:Output
13
14 R2
15
C
c) LPF (-12dB/Oct)
EXT Filter (inverting type)
R GV = 20 log 3 R 1
fc =
BPF2 BPF3:Output 13 14 C2 15
1 2π C1C2 R2 R3
R1 C1
R2
R3
5-3. DBB INT external Capacitor connected to pin.25 decides Attack/Recovery time of DBB.
Recovery time (s) = 0.5 X C(uF)
(test condition : Vin(Ach+Bch)=2Vrms, Sense Level = 4 )
Recovery time (C=4.7uF)
Vin=2 → 0.2Vrms f=70Hz
– 27 –
NJW1201A
5-4. Detective level in DBB Detective level of input signal in DBB is control by I2C or external resistor (Rsense:pin.24). In case of without external resistor, Detective level is shown in below Fig5-4-1, 5-4-2. Fig5-4-1 is Output Voltage vs Input Voltage when detective level is changed (Gain setting = 3). Fig5-4-2 is Output Voltage vs Input Voltage when Gain setting is changed (Sense level = 4). These figures don’t include the external Resistor (Rsense:pin.24).
Output vs Input Voltage (DBB SenseLevel sw eep)
V+=9V, DBB=GAIN3, Vin(A+Bch), f=70Hz Vout=Ach, Ta=25 C
10 10
o
Output vs Input Voltage (DBB GainLevel sw eep)
V+=9V, Sense=Sense4, Vin(A+Bch), f=70Hz Vout=Ach, Ta=25oC
Sense1 1
Output Voltage (Vrms)
Output Voltage (Vrms)
Sense2
1
Gain3 0.1 Gain2 Gain1 0.01
0.1 Sense4
Sense3
0.01
0.001 0.001
0.01
0.1
1
10
0.001 0.001
0.01
0.1
1
10
Input Voltage (Vrms)
Input Voltage (Vrms)
Regarding Detective Level (sense level), internal resistance is switched by I2C. This resistance decides detective level. 1. Sense 1 = 36kΩ 2. Sense 2 = 9kΩ 3. Sense 3 = 5.2kΩ 4. Sense 4 = 3.6kΩ And, if connect the external resistor (Rsense:pin.24), Detected level is shown in below equations. 1. Sense 1 = 36kΩ // Rsense 2. Sense 2 = 9kΩ // Rsense 3. Sense 3 = 5.2kΩ // Rsense 4. Sense 4 = 3.6kΩ // Rsense
– 28 –
NJW1201A
s APPLICATION NOTE
[6] 2
nd nd
Volume
2 Volume range is 0dB to –28dB with –2dB steps. nd Frequency response of 2 Volume depends on capacitor connected to VOL2CAP(pin.16,23). nd nd nd It shows frequency response of 2 Volume in Fing.6-1(2 Volume=-28dB), Fig6-2(2 Volume=MUTE). To flat the frequency response, please choose bigger capacitor.
Gain vs Frequency
0 2ndVOL=MUTE C=1uF 2ndVOL=MUTE C=4.7uF
(2nd Volume)
0
Gain vs Frequency
(2nd Volume)
V+=9V, 2ndVOL=-28dB, Vin=1Vrms, Ta=25oC
V+=9V, 2ndVOL=MUTE, Vin=1Vrms, Ta=25oC
-10
-20
2ndVOL=MUTE C=1uF
-20
-40
Gain (dB)
Gain (dB)
-30 2ndVOL=MUTE C=10uF
-60
2ndVOL=MUTE C=4.7uF 2ndVOL=MUTE C=10uF
-40
-80
-50
-100
1st&2ndVOL=MUTE
-60 10 100 1000 10000 100000
-120 10 100 1000 10000 100000
Frequency (Hz)
Frequency (Hz)
Fig.6-1
Fig.6-2
But, when power turns on, it takes some charge time to VOL2CAP(pin.16.23) nd If 2 Volume is switched on charge, Pop noise occurs. The cause of pop noise is gap of Voltage between Vref and VOL2CAP. To be fast the charge time, connect smaller capacitor to VOL2CAP.
DC Voltage vs time
8
(2nd Volume)
8
DC Voltage vs time
VOL2CAP=4.7uF
(2nd Volume)
8
DC Voltage vs time
VOL2CAP=10uF
7 6
(2nd Volume)
V+=0 ---> 9V, Ta=25oC
V+=0 ---> 9V, Ta=25oC
V+=0 ---> 9V, Ta=25oC
VOL2CAP=1uF
7 6
7 6
DC Voltage (V)
DC Voltage (V)
Vref
5 4
DC Voltage (V)
5 4
Vref
5 4 3 2 1 0 -0.5
Vref
Vdc at VOL2CAP 3 2 1 0 -0.5
Vdc at VOL2CAP 3 2 1 0 -0.5
Vdc at VOL2CAP
0
0.5
1
1.5
2
0
0.5
1
1.5
2
0
0.5
1
1.5
2
time (s)
time (s)
time (s)
Fig.6-3.VOL2CAP=1uF
Fig.6-4.VOL2CAP=4.7uF
Fig.6-4.VOL2CAP=10uF
– 29 –
NJW1201A
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
– 30 –
