SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
FEATURES
1
•
•
•
•
•
•
•
•
•
•
•
•
•
Single-Chip FM Stereo Radio and Transmitter
FM Stereo MPX [Receive (Rx), Transmit (Tx)]
Frequency Range 76 MHz to 108 MHz (Rx, Tx)
Low Supply Current
– Rx: 11.5 mA (VCC = 3 V, No RF Input)
– Tx: 13 mA (VCC = 3 V, No Audio Input,
RTX = Open)
32.768-kHz Crystal
I2C Interface
MPX Output for RDS (Rx)
Seek Tuning (Rx)
RFAGC (Rx)
RF Auto-Power Control (Tx)
Pilot Cancel (Rx)
Sixth-Order 15-kHz LPF (Tx)
Programmable De/Pre-Emphasis (50/75 µs)
•
•
•
•
•
•
•
Pilot Out (Tx)
General-Purpose External Input (Tx)
High Power Selectable RF Output (Tx)
–7/–3/1/4 dBm
High Cut Control (HCC), Stereo Noise Control
(SNC) (Rx)
Soft Mute (Rx)
VCC = 2.5 V to 4 V
40-Pin QFN Package
APPLICATIONS
•
•
•
Portable Media Players
MP3 Players
Personal Navigation Devices
CP
TEST OUT
GND OSC
VT
OSC
NC
RFAGC
TX OUT
GND RF
RF IN1
RTA PACKAGE
(TOP VIEW)
1
40 39 38 37 36 35 34 33 32 31
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11 12 13 14 15 16 17 18 19 20
RF IN2
VCC RF
MPX FIL
RSSI
IREF FIL
REG
MPX REF
PLT FIL
PLT DET1
PLT DET2
EXT IN
PLT OUT
GND A
RIN
LIN
ROUT
LOUT
VCCA
MPX OUT
TEST IN
VCC OSC
STBY
SDA
SCL
VCC D
GND D
PORT2
PORT1
XTAL2
XTAL1
NC – No internal connection
DESCRIPTION
The SN761633 is an FM radio receiver and transmitter IC for portable audio players.
The circuit consists of a stereo FM radio receiver and FM transmitter, and is available in a small-outline package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2008, Texas Instruments Incorporated
29
RF IN2
28
+
PLT DET2
PLT FIL
MPX FIL
MPX REF
PLT DET1
22
21
20
TEST IN
MPX OUT
19
RF IN1
–45
θ
AGC
18
VCCA
32
LOUT
VCC
RTX
17
TX OUT
I/O
Divider
33
MPX
TX
Modulator
TxPOW
34
RFAGC
Deemphasis
Preemphasis
ROUT
LPF
16
LIN
15
NC
35
OSC
36
VT
37
RIN
14
fc = 15 kHz
fo Cont
PLT ADJ
MODADJ
REG
CP
40
TEST OUT
39
25
13
12
I/O Logic
11
8
9
10
XTAL1
XTAL2
7
PORT1
6
PORT2
5
GND D
4
VCC D
3
2
SCL
1
SDA
38
STBY
GND OSC
REG
GND A
PLL
VCC OSC
OSC
150M–217M
23
FM DET
31 LNA
–
GND RF
24 28
27
IF = 325k
BPF
+45
θ
30
RSSI
VCC RF
IREF FIL
FUNCTIONAL BLOCK DIAGRAM
PLT OUT
EXT IN
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
TERMINAL FUNCTIONS
TERMINAL
NAME
DESCRIPTION
NO.
SCHEMATIC
CP
40
Charge-pump output
Figure 1
EXT IN
11
External signal input
Figure 2
GND A
13
Analog ground
GND D
6
Digital ground
GND OSC
38
Oscillator ground
GND RF
32
RF ground
IREF FIL
26
Reference current filter
Figure 3
LIN
15
Audio left input
Figure 4
LOUT
17
Audio left output
Figure 5
MPX FIL
28
MPX PLL filter
Figure 6
MPX REF
24
MPX reference voltage filter
Figure 7
MPX OUT
19
MPX output
Figure 8
NC
35
Not connected
36
Oscillator input
Figure 9
Pilot detector PLL loop filter
Figure 10
23
Pilot level detector filter
Figure 11
PLT OUT
12
Pilot signal output
Figure 12
PORT1, PORT2
8, 7
Port output
Figure 13
REG
25
Regulator filter
Figure 14
34
RFAGC filter
Figure 15
RF input
Figure 16
OSC
PLT DET1, PLT DET2
PLT FIL
RF AGC
RF IN1, RF IN2
22, 21
31, 30
RIN
14
Audio right input
Figure 4
ROUT
16
Audio right output
Figure 5
RSSI
27
RSSI filter
Figure 17
SCL
4
I2C clock input
Figure 18
SDA
3
I2C data input/output
Figure 19
STBY
2
Standby control input
Figure 20
TEST IN
20
Test input
Figure 21
TEST OUT
39
Test output
Figure 22
Tx OUT
33
Transmitter output
Figure 23
VCC A
18
Analog power supply
VCC D
5
Digital power supply
VCC OSC
1
Oscillator power supply
VCC RF
29
RF power supply
VT
37
Tuning voltage output
Figure 1
Crystal oscillator input/output
Figure 24
XTAL1, XTAL2
10, 9
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
3
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
40
37
11
20k
100 kΩ
20k
Figure 1. CP and VT
Figure 2. EXT IN
15
14
26
40k
100
Figure 3. IREF FIL
Figure 4. LIN and RIN
50
16
17
28
Figure 5. LOUT and ROUT
Figure 6. MPX FIL
19
24
Figure 7. MPX REF
4
Figure 8. MPX OUT
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
36
50k
21
22
50k
Figure 9. OSC
Figure 10. PLT DET1 and PLT DET2
12
23
30k
1.6V
Figure 11. PLT FIL
Figure 12. PLT OUT
7
8
25
60
Figure 13. PORT1 and PORT2
Figure 14. REG
30
31
34
Figure 15. RFAGC
Figure 16. RFIN1 and RFIN2
27
10k
4
1.5p
Figure 17. RSSI
Figure 18. SCL
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
5
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
10k
510
3
2
60
1.5p
Figure 19. SDA
Figure 20. STBY
39
900
20
30k
Figure 21. TEST IN
Figure 22. TEST OUT
10
33
Figure 23. Tx OUT
9
Figure 24. XTAL1 and XTAL2
ABSOLUTE MAXIMUM RATINGS (1)
over recommended operating free-air temperature range (unless otherwise noted)
MIN
MAX
VCC
Supply voltage range
VCCA, VCCD, VCC RF
–0.3
60
VIN
Input voltage range
Other pins
–0.3
VCC
V
TA
Operating free-air temperature range
–20
85
°C
Tstg
Storage temperature range
–65
150
°C
(1)
UNIT
V
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
VCC
Supply voltage
TA
Operating free-air temperature
VCCA, VCCD, VCC RF, VCC OSC
MIN
NOM
MAX
2.5
3
4
V
85
°C
–20
UNIT
CAUTION:
The SN761633 has four VCC pins (VCCA, VCCD, VCC OSC, and VCC RF). Use of
a single power source for all VCC pins is recommended. In the case of multiple
power supplies, VCCD should be applied first.
6
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ELECTRICAL CHARACTERISTICS – TOTAL DEVICE
VCC = 3 V, T = 25°C, measured in the circuit of Figure 26; RF input voltage (VRF) = 60 dBµVemf; RF frequency
(fRF) = 98.1 MHz, Audio signal frequency (fAF) = 1 kHz, Mono, FM = 22.5 kHzdev (30% at 75-kdev Ref.), BW =
LPF 30k (unless otherwise noted)
Supply Voltages and Currents
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
2.5
3
4
UNIT
VCC
Supply voltage
VCCA, VCCD, VCC RF, and VCC OSC are the same
voltage
ICC
Rx
Rx-mode supply current
No RF signal input
11.5
mA
ICC
Tx1
Tx-mode supply current 1
No LIN/RIN input, TxPOW[1:0] = 00, RTx = open
13
mA
12
mA
11.5
mA
18
mA
V
ICC
Tx2
Tx-mode supply current 2
No LIN/RIN input, TxPOW[1:0] = 00, RTx = open,
DIS_AFLPF = 1
ICC
Tx3
Tx-mode supply current 3
External input only mode, EN_EXTIN = 1, DIS_LRIN = 1,
DIS_AFLPF = 1, TxPOW[1:0] = 00, RTx = open
ICC
Tx4
Tx-mode supply current 4
No LIN/RIN input, TxPOW[1:0] = 10, RTx = 300 Ω
ICC
Tx5
Tx-mode supply current 5
No LIN/RIN input, TxPOW[1:0] = 11, RTx = 150 Ω
24
ICC
STBY1
Standby supply current 1
STBY (bit) = 1
0.1
10
µA
STBY2
Standby supply current 2
STBY (2 pin) = GND
0.1
10
µA
ICC
mA
Crystal Oscillator
PARAMETER
fXTAL
TEST CONDITIONS
Crystal oscillator frequency
Crystal CL = 12.5 pF
TYP
UNIT
32.768
kHz
Voltage-Controlled Oscillator
PARAMETER
fOSC
Oscillator frequency range
MIN
MAX
UNIT
150
217
MHz
Synthesizer
PARAMETER
N
Programmable counter
fREF
Reference frequency for phase detector
fSTEP
Tuning frequency step
TEST CONDITIONS
US
US/EU band range for search stop
LOC_HL = 0
LOC_HL = 1
fRANGE
JPN
Japan band range for search stop
LOC_HL = 0
ICP
Charge-pump current
TYP
14 bit
LOC_HL = 1
fRANGE
MIN
MAX
16383
16.384
kHz
8.192
kHz
10707
13237
dec
87.387
108.113
MHz
10628
13157
dec
87.390
108.107
MHz
9304
11039
dec
75.893
90.107
MHz
9224
10960
dec
90.109
MHz
75.888
CP[1:0] = 00
0.6
CP[1:0] = 01
1.25
CP[1:0] = 10
2.5
CP[1:0] = 11
5
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
UNIT
µA
7
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
I2C Interface
PARAMETER
TEST CONDITIONS
VIH
High-level input voltage (SCL, SDA)
VIL
Low-level input voltage (SCL, SDA)
VOL
Low-level ouput voltage (SDA)
fSCL
Clock frequency (SCL)
MIN
MAX
UNIT
0.7 × VCC
V
0.3 × VCC
V
0.4
V
400
kHz
VCC = 3 V, IOL = 500 µA
ELECTRICAL CHARACTERISTICS – Rx BLOCK
VCC = 3 V, TA = 25°C, measured in the circuit of Figure 26; RF input voltage (VRF) = 60 dBµVemf, RF frequency
(fRF) = 98.1 MHz, Audio signal frequency (fAF) = 1kHz, Mono, FM = 22.5 kHzdev (30% at 75-kdev Ref.),
BW = LPF 30 k (unless otherwise noted)
RF Signal Input
PARAMETER
fTU
RANGE
TEST CONDITIONS
MIN
Tuning frequency range
TYP
MAX
76
108
UNIT
MHz
VRx
Sensitivity input voltage
(S+N)/N = 26 dB, 22.5-kHz dev, De-emphasis = 75 µs
RRFIN
Input resistance
RF IN at 100 MHz, No RF signal input
120
Ω
CRFIN
Input capacitance
RF IN at 100 MHz, No RF signal input
1.5
pF
IRRx
Image rejection ratio
30
dB
10
dBµVemf
IF Band-Pass Filter
TYP
UNIT
fIF
IF center frequency
PARAMETER
Peak frequency, Test mode
TEST CONDITIONS
325
kHz
BIF
IF bandwidth
–3 dB, Test mode
130
kHz
S+200
Selectivity high side (200 kHz)
325 kHz + 200 kHz, Test mode
25
dB
S–200
Selectivity low side (200 kHz)
325 kHz – 200 kHz, Test mode
30
dB
S+100
Selectivity high side (100 kHz)
325 kHz + 100 kHz, Test mode
8
dB
S–100
Selectivity low side (100 kHz)
325 kHz – 100 kHz, Test mode
7
dB
FM Demodulator MPX OUT
PARAMETER
VMPXOUT
TEST CONDITIONS
MPX OUT output level
TYP
22.5 kHz dev, fAF = 1 kHz, EN_MPXOUT = 1
75
UNIT
mVrms
Soft Mute
PARAMETER
VS
MUTE
ATTS
8
MUTE
TEST CONDITIONS
TYP
UNIT
Soft mute start point
S_MUTE = 1, –3 dB
11
dBµVemf
Soft mute attenuation
VRF = 60 dBµVemf, S_MUTE = 0 to 1,
0 V applied to RSSI pin externally as pseudo condition of no RF signal
input
18
dB
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
ELECTRICAL CHARACTERISTICS – Rx BLOCK (CONTINUED)
VCC = 3 V, TA = 25°C, measured in the circuit of Figure 26; RF input voltage (VRF) = 60 dBµVemf, RF frequency
(fRF) = 98.1 MHz, audio signal frequency (fAF) = 1kHz, Mono, FM = 22.5 kHzdev (30% at 75 kdev Ref.),
BW = LPF 30 k (unless otherwise noted)
High Cut Control
PARAMETER
TCDE
EM
TCDE EM HCC
TEST CONDITIONS
De-emphasis time constant
TYP
EMTC = 0
50
EMTC = 1
75
VRF = 60 dBµVemf,
EMTC = 0
150
VRF = 60 dBµVemf,
0 V applied to RSSI pin externally
as pseudo condition of no RF signal input
EMTC = 1
225
VRF = 60 dBµVemf,
De-emphasis time constant
on HCC applied
UNIT
µs
µs
MPX Decoder
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO MONO
Mono output level
Mono, 22.5 kHzdev, fAF =1 kHz,
De-emphasis = 75 µs
75
mVrms
VO ST
Stereo output level
L = R, 22.5 kHzdev, fAF =1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%)
75
mVrms
VDIFF
LOUT- and ROUT-level difference
L = R, 22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%) LOUT-level ref.
–1
ATTMUTE
MUTE attenuation
MUTE = 1
60
dB
ATTL
MUTE
LOUT MUTE attenuation
MUTE_L = 1
60
dB
MUTE
ROUT MUTE attenuation
MUTE_R = 1
60
dB
fODD
Overdrive deviation margin frequency
fAF = 1 kHz,
De-emphasis = 75 s THD < 3%
150
kHz
S/NMONO
Mono signal-to-noise ratio
75 kHzdev (100%)., fAF = 1 kHz,
De-emphasis = 75 µs
60
dB
THDMONO
Mono total harmonic distortion
22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs
0.3
%
S/NST
Stereo signal-to-noise ratio
67.5 kHzdev (90%)., fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%)
50
dB
THDST
Stereo total harmonic distortion
22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%)
1
%
SEPST
Stereo separation
22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%)
33
dB
ST_IND 0 to 1 at I2C read mode
ATTR
DEVPLT
DET
Pilot detect deviation
HYSPLT
DET
Pilot detect deviation hysteresis
1
dB
5
%
2
dB
VSWMST
Mono-to-stereo switch level
22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%), SNC = 0
33
dBµVemf
HYSSWMST
Mono-to-stereo switch-level hysteresis
22.5 kHzdev, fAF = 1 kHz,
De-emphasis = 75 µs,
Pilot = 7.5 kHzdev (10%), SNC = 0
2
dB
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
9
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
ELECTRICAL CHARACTERISTICS – Rx BLOCK (CONTINUED)
VCC = 3 V, TA = 25°C, measured in the circuit of Figure 26; RF input voltage (VRF) = 60 dBµVemf, RF frequency
(fRF) = 98.1 MHz, Audio signal frequency (fAF) = 1kHz, Mono, FM = 22.5 kHzdev (30% at 75-kdev ref.), BW =
LPF 30 k (unless otherwise noted)
Stereo Noise Control
PARAMETER
VSNC
SNC start point
TEST CONDITIONS
TYP
22.5 kHzdev, fAF = 1 kHz, Pilot = 7.5 kHzdev (10%),
SNC = 1, Separation = 20 dB
UNIT
36
dBµVemf
RSSI
PARAMETER
VRSSI
RSSI minimum input level
MIN
RESRSSI
TEST CONDITIONS
TYP
RSSI[3:0] 0 to1 (dec) at I2C read mode
RSSI resolution
UNIT
9
dBµVemf
2
dB
IF Counter
PARAMETER
VI
MIN
MAX
UNIT
9
dBµVemf
Counter length
7
Bit
DIFC
Prescaler ratio
64
tIFC
Gate time
1/(32.768 kHz/400)
RESIFC
Resolution
64 × 32.768 kHz/400
NIFC
CNT
Count center
325k/64/32.768 kHz × 400
NIFC
STOP
IF counter result for search stop
IFCC
GATE
0 to 127
TYP
BITIFC
10
RF input level for correct IF count
TEST CONDITIONS
12.207
57
Submit Documentation Feedback
ms
5.24288
kHz
62
Dec
67
Dec
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
ELECTRICAL CHARACTERISTICS – Tx BLOCK
VCC = 3 V, TA = 25°C, measured in the circuit of Figure 26; RF frequency fRF = 98.1 MHz, BAND = 0 (USEU),
MODADJ[3:0] = +6 dB (for 98.1 MHz), Audio signal frequency fAF = 1 kHz, 100% means FM 75 kdev, BW = LPF
30 k, TxPOW[1:0] = –7 dBm measured with typical home hi-fi tuner (unless otherwise noted)
AF
PARAMETER
MODRAF ADJ
VIMAX
VIMAX
TEST CONDITIONS
AF modulation adjust ratio
AF maximum input level
(pre-emphasis 50 µs)
50
AF maximum input level
(pre-emphasis 75 µs)
75
VIAF
AF yypical input level for 100% dev
fIAFR
Input frequency range
RIAF
AF input impedance
tPRE
Pre-emphasis
fLPF
AFLPF frequency response
MIN
TYP
AFADJ [2:0] = 000
–9
AFADJ [2:0] = 001
–6
AFADJ [2:0] = 010
–3
AFADJ [2:0] = 011 (Ref.)
0
AFADJ [2:0] = 100
3
AFADJ [2:0] = 101
6
AFADJ [2:0] = 110
9
AFADJ [2:0] = 111
12
MAX
UNIT
dB
AFADJ = 0 dB, EMTC = 0, fs = 400 Hz,
L = R each channel
1000
AFADJ = 0 dB, EMTC = 0, fs = 10 kHz,
L = R each channel
330
AFADJ = 0 dB, EMTC = 1, fs = 400 Hz,
L = R each channel
1000
AFADJ = 0 dB, EMTC = 1, fs = 10 kHz,
L = R each channel
200
mVpp
mVpp
AFADJ = 0 dB, fs = 400 Hz, DIS_EM = 0,
L = R each channel
250
mVrms
20
15 k
40
EMTC bit = 0
50
EMTC bit = 1
75
DIS_AFLPF = 0, –3 dB
15
Hz
kΩ
µs
kHz
Mono Mode
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
15 k
Hz
Output frequency response
CP = 1.25 µA
S/NMONO98
Mono signal-to-noise ratio at 98.1 MHz
(100% modulation)
L = R = 250 mVrms, fAF = 1 kHz, AFADJ = 0 dB,
MODADJ = 5 dB, PLTADJ = off, MONO_ST = 1,
RF = 98.1 MHz, BAND = 0
55
dB
THDMONO98
Mono total harmonic distortion at 98.1
MHz
(30% modulation)
L = R = 75 mVrms, fAF = 1 kHz, AFADJ = 0 dB,
MODADJ = 5 dB, PLTADJ = off, MONO_ST = 1,
RF = 98.1 MHz, BAND = 0
1
%
S/NMONO83
Mono signal-to-noise ratio at 83 MHz
(100% modulation)
L = R = 250 mVrms, fAF = 1kHz, AFADJ = 0 dB,
MODADJ = 11 dB, PLTADJ = off, MONO_ST = 1,
RF = 83 MHz, BAND = 1
55
dB
THDMONO83
Mono total harmonic distortion at 83
MHz
(30% modulation)
L = R = 75 mVrms, fAF = 1 kHz, AFADJ = 0 dB,
MODADJ = 11 dB PLTADJ = off, MONO_ST = 1,
RF = 83 MHz, BAND = 1
0.5
%
ATTMT
MUTE attenuation
MUTE bit = 1
fO
MONO
20
50
dB
MONO
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
11
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
ELECTRICAL CHARACTERISTICS – Tx BLOCK (CONTINUED)
VCC = 3 V, TA = 25°C, measured in the circuit of Figure 26; RF frequency fRF = 98.1 MHz, BAND = 0 (US/EU),
MODADJ[3:0] = +6 dB (for 98.1 MHz), Audio signal frequency fAF = 1 kHz, 100% means FM 75kdev, BW = LPF
30 k, TxPOW[1:0] = –7 dBm measured with typical home hi-fi tuner (unless otherwise noted)
Stereo Mode
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
S/NST98
Stereo signal-to-noise ratio at 98.1 MHz
Main + Sub = 90%, Pilot = 10%
L = R = 225 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 5 dB,
PLTADJ = 0 dB, fRF= 98.1 MHz, BAND = 0
SEPST98
Stereo separation at 98.1 MHz
Main + Sub = 30%, Pilot = 10%
L or R = 75 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 5 dB,
PLTADJ = 0 dB,fRF = 98.1 MHz, BAND = 0
25
dB
THDST98
Stereo total harmonic distortion
at 98.1 MHz
Main + Sub = 30%, Pilot = 10%
L or R = 75 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 5 dB,
PLTADJ = 0 dB, fRF = 98.1MHz, BAND = 0
1
%
S/NST83
Stereo signal-to-noise ratio at 83 MHz
Main + Sub = 90%, Pilot = 10%
L = R = 225 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 11 dB,
PLTADJ = 0 dB, fRF = 83 MHz, BAND = 1
55
dB
SEPST83
Stereo separation at 83 MHz
Main + Sub = 30%, Pilot = 10%
L or R = 75 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 11 dB,
PLTADJ = 0 dB, fRF = 83 MHz, BAND = 1
30
dB
THDST83
Stereo total harmonic distortion
at 83 MHz
Main + Sub = 30%, Pilot = 10%
L or R = 75 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 11 dB,
PLTADJ = 0 dB, fRF = 83 MHz, BAND = 1
0.5
%
DIFFST
Left and right channel modulation
difference
L = R = 75 mVrms, fAF = 1 kHz,
AFADJ = 0 dB, MODADJ = 11 dB,
PLTADJ = 0 dB, fRF = 98.1 MHz,
BAND = 1 Lch level ref.
MOD
55
dB
–1
1
dB
EXT IN
PARAMETER
VEXT
TEST CONDITIONS
MIN
TYP
MAX
UNIT
500
mVpp
Maximum input level
EN_EXTIN = 1, DIS_LRIN = 0
Input frequency range
EN_EXTIN = 1, DIS_LRIN = 0
VOPLT
Pilot output level
EN_EXTIN = 1, DIS_LRIN = 0
40
mVrms
VEXT
Typical input level for 100% dev
EN_EXTIN = 1, DIS_LRIN = 0
125
mVrms
fR
MAX
EXT
TYP
20
80 k
Hz
RF Power
PARAMETER
VTxOUT
12
Tx output power
TEST CONDITIONS
TYP
TXPOW[1:0] = 00, RTX = open, RL = 50 Ω, EN_EXTIN = 0, DIS_LRIN = 1
–7
TXPOW[1:0] = 01, RTX = 300 Ω, RL = 50 Ω, EN_EXTIN = 0, DIS_LRIN = 1
–3
TXPOW[1:0] = 10, RTX = 300 Ω, RL = 50 Ω, EN_EXTIN = 0, DIS_LRIN = 1
1
TXPOW[1:0] = 11, RTX = 150 Ω, RL = 50 Ω, EN_EXTIN = 0, DIS_LRIN = 1
4
Submit Documentation Feedback
UNIT
dBm
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
I2C DATA FORMAT
I2C Write Data (R/W = 0)
Table 1. Rx-Mode Write Data (Address Bit 2, 1 = 0,0)
BYTE
BIT 7 (MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(LSB)
Address
1
1
0
0
0
0
0
R/W = 0
Data 1
MUTE
SM
N13
N12
N11
N10
N9
N8
Data 2
N7
N6
N5
N4
N3
N2
N1
N0
Data 3
SM_UD
SM_SL1
SM_SL0
LOC_HL
MONO_ST
MUTE_R
MUTE_L
PORT1
Data 4
PORT2
STBY
BAND
A_MUTE
S_MUTE
HCC
SNC
SM_IND
Data 5
DIS_EM
EMTC
EN_MPXOUT
0
0
0
CP1
CP0
Reserved (1)
Data 6–8
(1)
Do not write any data on reserved area. The data of this area is loaded at power-on-reset.
Table 2. Tx-Mode Write Data (Address Bit 2, 1 = 1,1)
BIT 7
(MSB)
BIT 6
Address
1
1
0
0
0
Data 1
MUTE
0
N13
N12
N11
BYTE
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 (LSB)
1
1
R/W = 0
N10
N9
N8
Data 2
N7
N6
N5
N4
N3
N2
N1
N0
Data 3
PLTADJ2
PLTADJ1
PLTADJ0
EN_EXTIN
MONO_ST
TxPOW1
TxPOW0
PORT1
Data 4
PORT2
STBY
BAND
MODADJ3
MODADJ2
MODADJ1
MODADJ0
DIS_AFLPF
Data 5
DIS_EM
EMTC
DIS_LRIN
AFADJ2
AFADJ1
AFADJ0
CP1
CP0
Data 6–8
(1)
Reserved
(1)
Do not write any data on reserved area. The data of this area is loaded at power-on-reset.
I2C Write Data (R/W = 1)
Table 3. Rx-Mode Write Data (Address Bit 2, 1 = 0,0)
BYTE
BIT 7
(MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 (LSB)
Address
1
1
0
0
0
0
0
R/W = 1
Data 1
READY
BAND_LMT
N13
N12
N11
N10
N9
N8
Data 2
N7
N6
N5
N4
N3
N2
N1
N0
Data 3
ST_IND
IFC6
IFC5
IFC4
IFC3
IFC2
IFC1
IFC0
Data 4
RSSI3
RSSI2
RSSI1
RSSI0
LOCKDET
X
X
X
Table 4. Tx-Mode Write Data (Address Bit 2, 1 = 1,1)
BYTE
BIT 7 (MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 (LSB)
Address
1
1
0
0
0
1
1
R/W = 1
Data 1
0
0
N13
N12
N11
N10
N9
N8
Data 2
N7
N6
N5
N4
N3
N2
N1
N0
Data 3
ST_IND
1
1
1
1
1
1
1
Data 4
1
1
1
1
X
1
1
1
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
13
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
Table 5. Rx-Mode Write Data Symbol Description (Address Bit 2, 1 = 0,0)
SYMBOL
DESCRIPTION
DEFAULT
MUTE
Mute control bit
0: Mute off
1: Mute on
0
SM
Search mode control bit
0: Off
1: On (start search when 0 to 1)
0
N13–N0
Programmable counter bits
Set main counter
SM_UD
Search up/down set bit
0: Down
1: Up
SM_SL1,
SM_SL0
Search stop-level bits
LOC_HL
Local high-/low-side
injection control bit
0: Low-side LO injection
1: High-side LO injection
1
MONO_ST
Mono/stereo switch
0: Auto stereo
1: Forced mono
0
MUTE_R,
MUTE_L
R-ch mute switch,
L-ch mute switch
0: Mute off
1: Mute on
0,
0
PORT1
Port 1 control bit
PORT 1 is enable as general purpose port in condition of SM_IND = 0
0: Low (Nch-MOS open drain on)
1: High (Nch-MOS open drain off)
When SIM_IND = 1, PORT 1 outputs search indicator.
1
PORT2
Port 2 control bit
0: Low (open drain on)
1: High (open drain off)
1
STBY
Standby control bit
0: Standby off
1: Standby on
1
BAND
Band selection at search mode
0: US/EU band (87.5 MHz to 108 MHz)
1: Japan band (76 MHz to 90 MHz)
0
A_MUTE
Auto mute control bit
0: Off
1: On (auto mute when PLL unlocked or search mode)
0
S_MUTE
Soft mute control bit
0: Off
1: On
0
HCC
High cut control bit
0: Off
1: On
0
SNC
Stereo noise cancel bit
0: Off
1: On
0
SM_IND
Search indicator control bit
0: Disable indicator. Port 1 is controlled by bit PORT1.
1: Enable indicator. Port1 outputs as search indicator
(in search sequence: L, Normal operation: H).
0
DIS_EM
Disable De-emphasis bit
0: De-emphasis on
1: De-emphasis off
0
EMTC
Time constant control bit for
De-emphasis
0: 50 µs
1: 75 µs
1
EN_MPXOUT
MPX output control bit
0: Output disable
1: Output enable
0
CP1,
CP0
CP current selection bit 1,
CP current selection bit 0
14
All 0
1
SM_L1
SM_L0
RSSI Level
0
0
1
1
0
1
0
1
≥0 (test function)
≥5
≥8
≥12
CP1
CP0
CP Current
0
0
1
1
0
1
0
1
0.6 µA
1.25 µA
2.5 µA
5 µA
Submit Documentation Feedback
1,
1
1,
0
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
Table 6. Tx-Mode Write Data Symbol Description (Address Bit 2, 1 = 1,1)
SYMBOL
DESCRIPTION
DEFAULT
MUTE
Mute control bit
0: Mute off
1: Mute on
0
N13–N0
Programmable counter bits Set main counter
PLTADJ2,
PLTADJ1,
PLTADJ0
Pilot-level adjust bits
EN_EXTIN
EXT input enable bit
0: Disable EXT IN, PLT OUT
1: Enable EXT IN, PLT OUT
0
MONO_ST
Mono/stereo switch
0: 38 kHz subcarrier on
1: 38 kHz subcarrier off
For mono mode, PLTADJ bits have to be set as PLTADJ[2:0] = 111
0
TxPOW1,
TxPOW0
Tx power-level selection
bits
PORT1,
PORT2
Port 1 control bit,
Port 2 control bit
PORT1 and PORT2 are enabled as general purpose ports.
0: Low (Nch-MOS open drain on)
1: High (Nch-MOS open drain off)
1,
1
STBY
Standby control bit
0: Standby off
1: Standby on
1
BAND
Band selection at search
mode
0: US/EU band (87.5 MHz to 108 MHz)
1: Japan band (76 MHz to 90 MHz)
0
MODADJ3,
MODADJ2,
MODADJ1,
MODADJ0
Modulation adjust bits
DIS_AFLPF
Disable 15-kHz LPF
0: AF 15-kHz LPF enable
1: AF 15-kHz LPF disable
0
DIS_EM
Disable pre-emphasis bit
0: Pre-emphasis on
1: Pre-emphasis off
0
EMTC
Time constant control bit
for pre-emphasis
0: 50 µs
1: 75 µs
1
DIS_LIN,
DIS_RIN
MPX output control bit
0: Output disable
1: Output enable
0
All 0
PLTADJ2
PLTADJ1
PLTADJ0
Level
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
–6 dB
–4 dB
–2 dB
0 dB
2 dB
4 dB
6 dB
Pilot off
0,
1,
1
(AFADJ[2:0] = 011, 0 dB = L = R = 10% of 250 mVrms 100% dev)
TxPOW1
TxPOW0
Level
0
0
1
1
0
1
0
1
–7 dBm
3 dBm
1 dBm
4 dBm
MODADJ3
MODADJ2
MODADJ1
MODADJ0
Total Composite
Level
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0 dB
1 dB
2 dB
3 dB
4 dB
5 dB
6 dB
7 dB
8 dB
9 dB
10 dB
11 dB
12 dB
13 dB
14 dB
15 dB
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
0,
0
15
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
Table 6. Tx-Mode Write Data Symbol Description (Address Bit 2, 1 = 1,1) (continued)
SYMBOL
DESCRIPTION
AFADJ2,
AFADJ1,
AFADJ0
AF-level adjust bits
CP1,
CP0
CP current selection bit 1,
CP current selection bit 0
DEFAULT
AFADJ2
AFADJ0
AFADJ1
Level
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
–9 dB
–6 dB
–3 dB
0 dB
3 dB
6 dB
9 dB
12 dB
CP1
CP0
CP Current
0
0
1
1
0
1
0
1
0.6 µA
1.25 µA
2.5 µA
5 µA
0,
1,
1
1,
0
Table 7. Rx-Mode Read Data Symbol Description (Address Bit 2, 1 = 0,0)
SYMBOL
DESCRIPTION
READY
Ready flag
0: PLL unlocked or search operation
1: Normal operation
BAND_LMT
Band limit flag at end of search operation
0: Not reached band limit (found station)
1: Reached band limit (not found station)
(reset to 0 when I2C date write)
N13–N0
Programmable counter bits
Setting of counter after search
ST_IND
Stereo indicator bit
0: Mono reception
1: Stereo reception
IFC6–0
IF counter result bits
IF counter result (0 to 127 dec)
Step frequency = (64 × 32.768 k)/400 = 5.24288 k (Hz)
RSSI3–0
RSSI level bits
RSSI level (0 to 15 dec)
LOCKDET
Lock detect flag
0: Unlocked
1: Locked
Table 8. Tx-Mode Read Data Symbol Description (Address Bit 2, 1 = 1,1)
SYMBOL
DESCRIPTION
N13–N0
Programmable counter bits
Setting of main counter
ST_IND
Stereo indicator bit
0: Stereo modulation
1: Other status
Table 9. Examples of Tx Mode Adjustment Bit Settings (1)
BAND
Tx FREQUENCY
(MHz)
MODADJ
LEVEL (2)
(dB)
MODADJ
BIT[3:0]
AFADJ LEVEL (3)
(dB)
AFADJ
BIT[2:0]
PLTADJ LEVEL
(dB)
PLTADJ
BIT[2:0]
US/EU
87.5
9
1001
0
011
0
011
US/EU
108
3
0011
0
011
0
011
JP
76
13
1101
0
011
0
011
JP
90
8
1000
0
011
0
011
(1)
(2)
(3)
16
These settings are to obtain audio modulation level of 22.5 kHzdev (30% modulation) and pilot level of 7.5 kHzdev (10% modulation)
when audio input level = 75 mVrms and audio input frequency = 400 Hz.
An adequate level for each Tx frequency should be selected for MODADJ. See Figure 33 and Figure 34.
AFADJ should be adjusted to maintain audio level × adjust level (dB) less than 250 mVrms. For example, when audio input level for
100% modulation is 500 mVrms, AFADJ should be –6 dB (AFADJ[2:1] = 001).
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
PLL Setting
N13–N0 14-bit word (NPLL) can be calculated as follows:
fIF= IF frequency (325 kHz)
fRF = Wanted tuning frequency
fIXTAL = Crystal frequency (32.768 kHz)
Rx
Upper Local Setting
Lower Local Setting
f +f
NPLL = 4 X RF IF
fXTAL
f –f
NPLL = 4 X RF IF
fXTAL
Tx
NPLL = 4 X
fRF
fXTAL
Example for Rx mode:
fRF = 81.3 MHz, lower local
NPLL = 4 X
81.3M – 325k
= 9885
32.768
The PLL word becomes 269Dh (N[13:0] = 10 0110 1001 1101).
Example for Tx mode:
fRF = 88 MHz
NPLL = 4 X
88M = 10742
32.768k
The PLL word becomes 29F6h (N[13:0] = 10 1001 1111 0110).
Standby Mode
Standby mode can be controlled by STBY pin voltage and STBY bit data as shown in Table 10.
Table 10. Standby Mode
VOLTAGE APPLIED
ON STBY PIN
I2C STBY BIT DATA
DEVICE OPERATION
L
0
Standby
L
1
Standby
H
0
Normal Operation
H
1
Standby
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
17
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
FM Transmitter Block
15 kHz
LPF
L
PreEmphasis
MPX
MODADJ[3:0]
AFADJ[2:0]
R
15 kHz
LPF
PreEmphasis
TXPOW[1:0]
Pilot
PLTADJ[2:0]
Figure 25. FM Transmitter Block Diagram
Initial
setting
18
Audio input level:
L = R = 75 mVrms, AFADJ = 0 dB, fs = 400 Hz
Pilot level:
PLTADJ = 0 dB means 10%
FM modulation:
MODADJ depends on Tx frequency to be 22.5 kHz dev.
Output power:
TxPOW = –7 dBm
Pullup resistance is not necessary.
TxPOW =–3, 1 dB
Antenna load 50 Ω add pullup resistance RTX 300 Ω
TxPOW = 4 dBm
Antenna load 50 Ω add pullup resistance RTX 150 Ω
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
APPLICATION INFORMATION
VCC
1
C19
Tx OUT
34
33
32
31
RF IN1
35
Tx OUT
36
C17
C18
NC
37
VT
38
OSC
39
GND OSC
CP
40
RTx
L2
GND RF
C20
TEST OUT
C21
VD1
RFAGC
R8
C14
L1
C15
RF IN
RF IN2 30
VCC OSC
C16
2
STBY
VCC RF 29
SDA
3
SDA
MPX FIL 28
SCL
4
SCL
RSSI 27
5
VCC D
6
GND D
REG 25
PORT2
7
PORT2
MPX REF 24
PORT1
8
PORT1
PLT FIL 23
9
XTAL2
PLT DET1 22
10 XTAL1
PLT DET2 21
C12
C11
C10
SN761633
IREF FIL 26
C9
C8
X1
C7
C6
17
TEST IN
16
VCCA
15
MPX OUT
14
ROUT
13
LOUT
12
RIN
GND A
11
LIN
EXT IN
PLT OUT
C5 R3
18
19
20
EXT IN
PLT OUT
MPX OUT
A.
RIN
LOUT
LIN
ROUT
PART NAME
VALUE
PART NAME
C5 (PLT DET)
0.22 μF
C18 (RFAGC)
4.7 nF
VALUE
1 nF
C6 (PLT DET)
22 nF
C19 (OSC)
C7 (PLT FIL)
0.1 μF
C20 (CP)
0.47 μF
C8 (REG)
0.1 μF
C21 (CP)
1 nF
C9 (IREF FIL)
0.1 μF
L1 (RF IN)
100 nH
C10 (RSSI)
0.01 μF
L2 (OSC)
24 or 27 nH
C11 (MPX FIL)
0.47 μF
R3 (PLT DET)
2.2 kΩ
C12 (VCC RF)
0.1 μF
R8 (CP)
22 kΩ
C14 (RF IN1)
68 pF
RTx (Tx OUT)
150 or 300 or open
C15 (RF IN2)
22 pF
VD1
BB202 or RKV651KK
C16 (RF IN2)
330 pF
X1
32.768 kHz, CL = 12.5 pF
C17 (Tx OUT)
0.01 μF
This application information is advisory and a performance check is required at actual application circuits. TI assumes
no responsibility for the consequences of use of this circuit, such as an infringement of intellectual property rights or
other rights, including patents of third parties.
Figure 26. Application Circuit
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
19
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
RDS Solution
SN761633
DATA
RDS/RBDS Decoder
MPX OUT
LOUT/ROUT
LIN/RIN
PLT OUT
DATA
RDS/RBDS Encoder
(EN_EXTIN=1)
EXT IN
Figure 27. RDS Solution 1
SN761633
DSP
Audio L/R
MPX OUT
(EN_EXTIN=1
DIS_LRIN=1)
Data
Composite Signal
EXT IN
Figure 28. RDS Solution 2 (DSP Interface)
Mixing Mode (Tx)
LIN/RIN and EXT IN signals can be mixed as a Tx signal.
SN761633
Audio Amplifier
LOUT/ROUT
Tx
+
LIN/RIN
MP3 Player
(EN_EXTIN=1,
DIS_LRIN=0)
EXT IN
Cell Phone/Navigation Voice
Figure 29. Mixing Mode of Tx Signal
20
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
TYPICAL CHARACTERISTICS
10
(A)
0
(C)
Audio Output Level (dB)
–10
–20
(D)
Conditions:
VCC = 3 V, TA = 25°C, 30 kHz LPF
0 dB = mVrms
HCC = 0 (off)
SNC = 0 (off)
MONO_ST = 0 (auto stereo)
TC = 75 μs, CP = 2.5 μA
fRF = 98.1 MHz, upper LO
(B)
–30
–40
–50
–60
–20
–10
0
10
20
30
40
50
60
70
80
90
100
110
120
RF Input Level (dBμVemf)
A.
Mono signal, soft mute off (fAF = 1 kHz, 22.5 kHz dev, 30%)
B.
Noise in mono mode, soft mute off
C.
Mono signal, soft mute on (fAF = 1 kHz, 22.5 kHz dev, 30%)
D.
Noise in mono mode, soft mute on
Figure 30. Rx-Mode FM Mono Characteristics (Soft Mute On/Off)
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
21
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
TYPICAL CHARACTERISTICS (continued)
10
(A)
0
Audio Output Level (dB)
(D)
(B)
–10
(E)
–20
Conditions:
VCC = 3 V, TA = 25°C, 30 kHz LPF
0 dB = mVrms
S_MUTE = 0 (soft mute off)
SNC = 0 (off)
MONO_ST = 0 (auto stereo)
TC = 75 μs, CP = 2.5 μA
fRF = 98.1 MHz, upper LO
–30
(C)
–40
(F)
–50
–60
–20
–10
0
10
20
30
40
50
60
70
80
90
100
110
120
RF Input Level (dBμVemf)
A.
Mono signal, high cut off (fAF = 1 kHz, 22.5 kHz dev, 30%)
B.
Mono signal, high cut off (fAF = 10 kHz, 22.5 kHz dev)
C.
Noise in mono mode, high cut off
D.
Mono signal, high cut on (fAF = 1 kHz, 22.5 kHz dev, 30%)
E.
Mono signal, high cut on (fAF = 10 kHz, 22.5 kHz dev)
F.
Noise in mono mode, high cut on
Figure 31. Rx-Mode FM Mono Characteristics (High Cut Control [HCC] On/Off)
22
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
TYPICAL CHARACTERISTICS (continued)
10
Conditions:
VCC = 3 V, TA = 25°C, 30 kHz LPF
Main + sub = 30%, Pilot = 10%
0 dB = mVrms
S_MUTE = 0 (soft mute off)
HCC = 0 (off)
MONO_ST = 0 (auto stereo)
TC = 75 μs, CP = 2.5 μA
fRF = 98.1 MHz, upper LO
(A)
0
Audio Output Level (dB)
(D)
–10
(E)
(B)
–20
(C)
–30
(F)
–40
–50
–60
–20
–10
0
10
20
30
40
50
60
70
80
90
100
110
120
RF Input Level (dBμVemf)
A.
Stereo left signal, noise control off (fAF = 1 kHz, 22.5 kHz dev)
B.
Stereo right signal, noise control off (audio signal off)
C.
Noise in stereo mode, noise control off
D.
Stereo left signal, noise control on (fAF =1 kHz, 22.5 kHz dev)
E.
Stereo right signal, noise control on (audio signal off)
F.
Noise in stereo mode, noise control cut on
Figure 32. Rx-Mode FM Stereo Characteristics [Stereo Noise Control (SNC) On/Off]
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
23
SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210B – OCTOBER 2007 – REVISED FEBRUARY 2008
TYPICAL CHARACTERISTICS (continued)
15
Conditions:
VCC = 3 V, TA = 25°C
CP = 1.25 μA
AFADJ = 0 dB
Audio input = 75 mVrms, 1 kHz
44
42
Degree of Modulation (%)
40
14
13
12
38
11
36
10
34
9
Degree of modulation
32
8
30
7
28
6
26
5
24
MODADJ (dec)
46
4
MODADJ setup
22
3
20
2
18
1
16
86
88
90
92
94
96
98
100
102
104
106
108
0
110
Tx Frequency (MHz)
Figure 33. Tx Modulation Characteristics (US/EU Band)
46
15
42
Degree of Modulation (%)
40
14
Conditions:
VCC = 3 V, TA = 25°C
CP = 1.25 μA
AFADJ = 0 dB
Audio input = 75 mVrms, 1 kHz
MODADJ setup
13
12
38
11
36
10
34
9
32
8
30
7
28
6
Degree of modulation
26
5
24
4
22
3
20
2
18
1
16
MODADJ (dec)
44
0
74
76
78
80
82
84
86
88
90
92
Tx Frequency (MHz)
Figure 34. Tx Modulation Characteristics (Japan Band)
24
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): SN761633
PACKAGE OPTION ADDENDUM
www.ti.com
10-Oct-2013
PACKAGING INFORMATION
Orderable Device
Status
(1)
SN761633RTAR
OBSOLETE
Package Type Package Pins Package
Drawing
Qty
WQFN
RTA
40
Eco Plan
Lead/Ball Finish
(2)
TBD
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Call TI
Call TI
(4/5)
-20 to 85
SN76
1633
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
Samples
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products
Applications
Audio
www.ti.com/audio
Automotive and Transportation
www.ti.com/automotive
Amplifiers
amplifier.ti.com
Communications and Telecom
www.ti.com/communications
Data Converters
dataconverter.ti.com
Computers and Peripherals
www.ti.com/computers
DLP® Products
www.dlp.com
Consumer Electronics
www.ti.com/consumer-apps
DSP
dsp.ti.com
Energy and Lighting
www.ti.com/energy
Clocks and Timers
www.ti.com/clocks
Industrial
www.ti.com/industrial
Interface
interface.ti.com
Medical
www.ti.com/medical
Logic
logic.ti.com
Security
www.ti.com/security
Power Mgmt
power.ti.com
Space, Avionics and Defense
www.ti.com/space-avionics-defense
Microcontrollers
microcontroller.ti.com
Video and Imaging
www.ti.com/video
RFID
www.ti-rfid.com
OMAP Applications Processors
www.ti.com/omap
TI E2E Community
e2e.ti.com
Wireless Connectivity
www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2016, Texas Instruments Incorporated
工商网监
湘ICP备2023018690号
