TDA7340P Fast Delivery |IC PHOENIX CO.,LIMITED

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TDA7340P
AUDIO SIGNAL PROCESSOR
TDA7340
AUDIO SIGNAL PROCESSOR
AUDIOPROCESSOR:
MUTE, SOFT MUTE AND ZERO CROSSING
MUTE
ONE DIFFERENTIAL, TWO STEREO AND
TWO MONO INPUTS
DIFFERENTIAL PHONE INPUT
VOLUME, BASS, TREBLE AND LOUDNESS
CONTROL
FOUR SPEAKER ATTENUATORS WITH IN-
DEPENDENT ATTENUATION CONTROL
STEREODECODER:
ADJUSTMENT FREE INTEGRATED 456KHz
VCO
HIGH CUT CONTROL
STEREO BLEND
NOISE BLANKER:
INTEGRATED HIGH-PASS FILTER
NOISE RECTIFIER OUTPUT FOR QUALITY
DETECTION
PROGRAMMABLE TRIGGER THRESHOLD
PAUSE DETECTOR:
PROGRAMMABLE THRESHOLD
ALLFUNCTIONS PROGRAMMABLEVIAI2 CBUS
DESCRIPTION
The TDA7340I2C bus controlled audio signal
processor containsall signal processing blocksof high performance car radio, including audio-
processor, stereodecoder, noise blanker, pause
detectorand differentmute functions.
The useof BICMOS technology allows the imple-
mentationof several filter functions with switched
capacitor techniques like fully integrated, adjust-
ment free PLL Loop filter, pilot detector with inte-
grator and two 19KHz notch filters.
This minimizes the numberof external compo-
nents.
Duetoa highly linear signal processing, using
CMOS-switching techniques insteadof standard
bipolar multipliers, very low distortion and very
low noise are obtained alsoin the stereodecoder
part. The audioprocessor contains several new
features like softmute, zero-crossing mute and
pause detector.
Very low Dc steppingis obtained by useofa
BICMOS technology.
September 1999
ORDERING NUMBER: TDA7340P
PQFP44
1/16
AUDIO PROCESSOR PART
FEATURES:
Input Multiplexer:
DIFFERENTIAL CD STEREO INPUT
CASSETTESTEREO INPUT STEREO INPUT FROM STEREODE-
CODER INPUT:
MONO OR STEREO MODE (PROGRAMMA-
BLE)
BEEP INPUT (ONLYIN AM MONO MODE)
TELEPHONE DIFFERENTIAL MONO INPUT
GAIN PROGRAMMABLE IN 3x 3.75dB
STEPS
Loudness:
FULLY PROGRAMMABLEx 1.25dB STEPS
Volume Control:
1.25dB COARSE ATTENUATOR
0.31dB FINE ATTENUATORS
MAX GAIN 20dB
MAX ATTENUATION 59.7dB (PLUS LOUD-
NESS)
Bass Controlx 2dB STEPS
2nd ORDER SYMMETRICAL OR NON SYM-
METRICAL FREQUENCY RESPONSE
(PROGRAMMABLE)
Treble Controlx 2dB STEPS
Speaker Control INDEPENDENT SPEAKER CONTROL IN
1.25dB STEPS
CONTROL RANGE 37.5dB
INDEPENDENT SPEAKER MUTE
Mute Functions
DIRECT MUTE
ZERO CROSSING MUTE WITH PROGRAM-
MABLE THRESHOLD
SOFT MUTE WITH EXTERNAL DEFINED
SLOPE
Pause Detector
PROGRAMMABLE THRESHOLD
DELAY TIME DEFINED BY AN EXTERNAL
CAPACITOR
STEREO DECODER PART
FEATURES:
INTEGRATED 19KHZ NOTCH FILTER FOR
PILOT CANCELLATION CHIP FILTER FOR PILOT DETECTOR
AND PLL
ADJUSTMENT FREE VOLTAGE CONTROL-
LED OSCILLATOR
AUTOMATIC PILOT DEPENDENT
MONO/STEREO SWITCHING
VERY HIGH INTERMODULATION AND IN-
TERFERENCE SUPPRESSION2C BUS CONTROLLED (STD OFF, FORCED
MONO, STEREO)
HIGH CUT CONTROL
STEREOBLEND
NOISE BLANKER PART
FEATURES:
INTERNAL 2nd ORDER HIGH-PASS FILTER
NOISE RECTIFIER OUTPUT FOR SIGNAL
QUALITY DETECTION
PROGRAMMABLE TRIGGER THRESHOLD
TRIGGER THRESHOLD DEPENDENT ON
HIGH FREQUENCY NOISE
BLANKING TIME PROGRAMMABLE BY EX-
TERNAL CAPACITOR
VERY LOW OFFSET CURRENT DURING
HOLD TIME DUE TO OPAMPS WITH MOS
INPUTS
LEVEL INPUT FOR ADDITIONAL SPIKE DE-
TECTION ON FIELD STRENGTH
TDA7340
2/16
SUPPLY
VOLUME
LOUDNESS
DEMODULATOR
CREF
PAUSE
OUT
D93AU046B
BUS
PLL
456KHz
VDD
1nF C13
47nF
47nF
C15
TDA7340
(AM
MONO)
AM_L
CASS
MUX
PHONE
GND
PAUSE
47nF
MPX
MUTE
SOFT
MUTE
47nF
BASS
6.2K
6.2K
100nF
TREBLE
C11
2.7nF
2.7nF
C12
OUT
OUT
OUT
OUT
OUT
OUT
OUT
SCLSDADIGGND
80KHz
25KHz
19KHz
NOTCH
NOISE
BLANKER
HIGH
CUT
CONTROL
PEAK
DETECTOR
PULSE
FORMER
LEVEL
CONTROL
LEVEL
PEAK
TBLANK
47nF
C16
470pF
C17
100K
47K
68K
47K
VSB
VHCC
reflevel
level
1nF C14
field
strength
OUT
OUT
AM_R
(BEEP)
CASS
PHONE
VCO
GND
LOUD
LOUD
CSM
BIN
BOUT
BIN
BOUT
C10
(*)
(**)
NETWORK
ADAPTED
THE
SPECIFIC
REQUESTS
FOR
STEREO
BLEND
AND
HIGH
CUT
CONTROL
BLOCK DIAGRAM
TDA7340
3/16
ELECTRICAL CHARACTERISTICS (VS= 9V; Tamb =25°C;RL= 10KΩ;all gains= 0dB;f= 1KHz;
unless otherwise specified,referto the Test Circuit.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY Supply Voltage 6 9 10 V Supply Current Stereo Decoder= ON 10 20 25 mA
Stereo Decoder= OFF 5 12.5 20 mA
SVR Ripple Rejection Audioprocessor 90 dB
Stereo Decoder+ Audioprocessor 55 dB
INPUT SECTION Input Resistance 70 100 130 KΩ
VCL Clipping Level d ≤ 0.3% 2.1 2.6 Vrms Input Separation 80 100 dB Output Load Resistance 2 KΩMIN Minimum Input Gain -0.75 0 0.75 dB MAX Max Input Gain 10.25 11.25 12.25 dB
GSTEP Step Resolution 2.75 3.75 4.75 dB
eIN Input Noise Single Ended Input 2.3 μV
VDC Dc Steps Adjacent Gain Step 2 10 mV
GMINto GMAX 3mV
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit Operating Supply Voltage 10.5 V
Tamb Operating Temperature Range -40to85 °C
Tstg Storage Temperature Range -55to 150 °C
THERMAL DATA
Symbol Parameter Value Unit
Rthj-pins Thermal Resistance Junction-pins max85 °C/W
PIN CONNECTION19202122434241 3940 3837363534
GND
LOUDR
LOUDL
INL
OUTL
CREF
SDA
SCL
CSM
DIGGND
VDD
PAUSE
VCO
PEAK
TBLANK
HCR
LEVEL
HCLVSB
VHCC
MPX
OUT
BIN
BOUT
BOUT
BIN
AM_L
(BEEP)
AM_R
(AM
MONO)
CASS
CASS
PHONIN
PHONGND
OUTLF
OUTLR
OUTRR
OUTRFL
CDL+
CDL-
CDR+
CDR-
D94AU055A13141516
TDA7340P
(PQFP44)
TDA7340
4/16
ELECTRICAL CHARACTERISTICS (continued.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
DIFFERENTIAL CD STEREO INPUT Input Resistance Input selector BITD6=0 (0dB) 10 15 20 KΩ
Input selector BITD6= 1(-6dB) 14 20 30 KΩ
CMRR Common Mode Rejection Ratio VCM =1VRMS; f= 1KHz =10KHz 75 dB 70 dB Distortion VI =1VRMS 0.01 0.08 %
eIN Input Noise 20Hzto 20KHz; Flat; D6=0 5 μV
GDIFF Differential Gain D6=0 -1 0 1 dB
D6=1 -7 -6 -5 dB
DIFFERENTIAL TELEPHONE MONO INPUT Input Resistance 14 20 26 KΩ
CMRR Common Mode Rejection Ratio VCM =1VRMS;f= 1KHz 45 60 dB Distortion VI =1VRMS 0.15 0.5 %
eIN Input Noise 20Hzto3 KHz; Flat 10 μV
GDIFF Differential Gain -4.75 -3.75 -2.75 dB
VOLUME CONTROL Input Resistance (INR, INL) 24 35 46 KΩ
CMAX Max Gain 18.75 20 21.25 dB
AMAX Max Attenuation 57.7 59.7 62.7 dB
ASTEPC Step Resolution Coarse
Attenuation
0.50 1.25 2.00 dB
ASTEPF Step Resolution Fine
Attenuation
0.11 0.31 0.51 dB Attenuation Set Error G= -20to 20dB -1.25 0 1.25 dB= -20to -59.7dB 3 2 dB Tracking Error 2dB
VDC DC Steps Adjacent Attenuation Steps -3 0.1 3 mV
from 0dBto AMAX 0.5 5 mV
LOUDNESS CONTROL (LOUDL, LOUDR) Internal Resistance 35 50 65 KΩ
ASTEP Step Resolution 0.5 1.25 2.0 dB
AMAX Max Attenuation 17.5 18.75 20.0 dB
ZERO CROSSING MUTE
VTH Zero Crossing Threshold(1) WIN=11 20 mV
WIN=10 40 mV
WIN=01 80 mV
WIN=00 160 mV
AMUTE Mute Attenuation 80 100 dB
VDC DC Step 0dBto Mute 0.3 3 mV
SOFT MUTE
AMUTE Mute Attenuation 45 60 dB Delay Time CEXT= 22nF; I= IMAXto -20dB; I= IMIN
0.8 1.5 2.0 ms 25 45 ms
(1)WIN representsthe MUTE programmingbit pair D6,D5forthe zero crossing windowthreshold
TDA7340
5/16
ELECTRICAL CHARACTERISTICS (continued.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
BASS CONTROL
CRANGE Control Range ±11.5 ±14 ±16 dB
ASTEP Step Resolution 1 2 3 dB Internal Feedback Resistance 35 50 65 KΩ
TREBLE CONTROL
CRANGE Control Range ±13 ±14 ±15 dB
ASTEP Step Resolution 1 2 3 dB
SPEAKER ATTENUATORS
CRANGE Control Range 35.0 37.5 40.0 dB
ASTEP Step Resolution 0.5 1.25 2.0 dB
AMUTE Output Mute Attenuation Data Word= 38.75dB 80 100 dB Attenuation Set Error 1.50 dB
VDC DC Step Adjacent Attenuation Steps 0.1 3 mV
AUDIO OUTPUTS
VCLIP Clipping Level d= 0.3% 2.1 2.6 VRMS Output Load Resistance 2 KΩ
ROUT Output Impedance 30 100 Ω
VDC DC Voltage Level 3.5 3.8 4.1 V
PAUSE DETECTOR
VTH Zero Crossing Threshold(1) WIN=11 20 mV
WIN=10 40 mV
WIN=01 80 mV
WIN=00 160 mV
IDELAY Pull-up Current 15 25 35 μA
VTHP Pause Threshold 3.0 V
GENERAL
ENO Output Noise BW= 20Hzto 20KHz,flat
Output Muted
All gains= 0dB
S/N Signalto Noise Ratio All gains 0dB;VO =1VRMS; 106 dB Distortion VI =1VRMS; 0.01 0.08 % Channel Separation Left/Right 80 100 dB Total Tracking Error AV=0to -20dB; 0 1 dB= -20to -60dB; 0 2 dB
BUS INPUT
VIL Input Low Voltage 1V
VIH Input High Voltage 3 V
IIN Input Current VIN= 0.4V -5 5 μA Output Voltage SDA
Acknowledge= 1.6mA 0.4 0.8 V
(1)WIN representthe MUTEprogramming bitpaIr D6,D5forthe zero crossing window threshold
TDA7340
6/16
STEREO DECODER PART
ELECTRICAL CHARACTERISTICS (VS= 9V; modulation frequency: 1KHz; de-emphasistime: 50μs; nominal MPX input voltage: VMPX= 0.5VRMS (75KHz deviation);GI= 3.5dB; Tamb =27°C; un-
less otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
VIN MPX Input Level 0.5 1.25 VRMS
RIN Input Resistance 35 50 65 KΩ
GMIN Minimum Input Gain 2.5 3.5 4.5 dB
GMAX Maximum Input Gain 9.5 11 12.5 dB
GSTEP Step Resolution 1.75 2.5 3.25 dB
SVRR Supply Voltage Ripple Rejection VRIPPLE= 100mV;f= 1KHz 50 60 dB DC Output Voltage (HCL, HCR) 4.2 4.5 4.8 V Channel Separation VSB -VR= 100mVDC 50 dB
THD Total Harmonic distortion 0.02 0.2 %+N
Signal plus noiseto noise ratio f= 200Hzto 16KHz;S= 2VRMS 91 dB
CARRIER AND HARMONIC SUPPRESSION AT THE OUTPUT
α19 Pilot Signalf= 19KHz 55 75 dB
α38 Subcarrierf= 38KHz 75 dB
α57 Subcarrierf= 57KHz 62 dB
α76 Subcarrierf= 76KHz 90 dB
INTERMODULATION (note1)
α2fmod= 10KHz; fspur= 1KHz 65 dB
α3fmod= 13KHz; fspur= 1KHz 75 dB
TRAFFIC RADIO (note2)
α57 Signalf= 57KHz 70 dB
SCA- SUBSIDIARY COMMUNICATIONS AUTHORIZATION (note3)
α67 Signalf= 67KHz 75 dB
ACI- ADJACENT CHANNEL INTERFERENCE (note4)
α114 Signalf= 114KHz 95 dB
α190 Signalf= 190KHz 84 dB
MONO/ STEREO SWITCH
VINTH Pilot Threshold Voltage for stereo ”ON”Pth =1
Pth=0
mVRMS
mVRMS
VINTH Pilot Threshold Voltage for stereo ”OFF”Pth =1
Pth =0
mVRMS
mVRMS
STEREO BLEND
VSB-VR Control Voltagefor Channel
Separation= 6dB;VR= 3.6V (note5) -0.31 -0.26 -0.23 V
VSB-VR Control Voltagefor Channel
Separation= 26dB; -50 mV
HIGH CUT CONTROL
τdeemp De-Emphasis Time Constant C13,C14= 1nF;VHCC-VR= 100mV 50 μs
RHCC High Cut Control Resistance VHCC-VR= 100mV 50 KΩ
RHCC High Cut Control Resistance VHCC-VR= -1.3V(note6) 115 150 185 KΩ
VCO
fOSC Oscillator Frequency 456
Δf/f Capture and Holding Range 1
TDA7340
7/16
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Condition Min. Typ. Max. Unit
NOISE INTERFERENCE DETECTOR
VTR Trigger Threshold(1)
(see pulse slopefig3)
meas. with
VRECT= 1.2V
NTB=00 100 mVP
NTB=10 130 mVP
NTB=11 170 mVP
meas. with
VRECT= 1.4V
NTB=00 150 mVP
NTB=10 200 mVP
NTB=11 250 mVP
VRECT Rectifier Voltage VMPXIN= 0mV 0.5 0.9 1.3 V
VMPXIN= 50mV;f= 150KHz 1.5 V
VMPXIN= 100mV;f= 150KHz 2.0 2.5 3.0 V Suppression Pulse Duration CBLANK= 470pF 40 μs
IOS Input Offset Current During
Suppression Time pA
(1)NTB representthe STDEC programmingbitpair D6,D5forthe noise blanker triggerthreshold
NOTES TO THE CHARACTERISTICS INTERMODULATION SUPPRESSION= VO (signal)(at1KHz) (spurious)(at1KHZ) ;fs=(2x 10KHz)- 19KHz= VO (signal)(at1KHz) (spurious)(at1KHZ) ;fs=(3x 13KHz)- 38KHz
measured with: 91% mono signal; 9% pilot signal; fm=10KHzor 13KHz TRAFFIC RADIO (V.F.) suppression
α57 (V.W.F.)= VO(signal) (at1KHz) (spurious) (at1KHZ ±23Hz)
measured with: 91% stereo signal; 9% pilot signal; fm=1KHz; 5% subcarrier
(f=57KHz,fm= 23Hz AM,m= 60%) SCA (SUBSIDIARY COMMUNICATIONS AUTHORIZATION)
α67= VO(signal) (at1KHz) (spurious)(at9KHZ) ;fs=(2x 38KHz)- 67KHz
measured with: 81% mono signal; 9% pilot signal; fm=1KHz;
10% SCA- subcarrier(fs= 67KHz, unmodulated) ACI (ADJACENT CHANNEL INTERFERENCE)
α114= VO (signal) (at1KHz) (spurious)(at4KHZ) ;fs= 110KHz-(3x 38KHz)
α190= VO (signal) (at1KHz) (spurious)(at4KHZ) ;fs= 186KHz-(5x 38KHz)
measured with: 90% mono signal; 9% pilot signal; fm=1KHz; 1% spurious signal
(fs= 110KHzor 186KHz, unmodulated)
TDA7340
8/16

Partno	Mfg	Dc	Qty	Available	Descript
TDA7340P	ST	N/a	9504	avai	AUDIO SIGNAL PROCESSOR