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STMicroelectronics Electronic Components Datasheet

TDA7420 Datasheet

MULTIFUNCTIONAUDIO PROCESSOR

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® TDA7420
MULTIFUNCTION AUDIO PROCESSOR
CASSETTE PREAMPLIFIER:
FORWARD/REVERSE INPUTS GROUND
COMPATIBLE
INTERNAL SWITCHES FOR EQUALIZATION
INTERNAL ADJUSTMENT FOR TRAKING
INTERNAL ADJUSTMENT FOR OUTPUT
AMS:
INPUT GAIN CONTROL
ADJUSTABLE GAIN VERSUS FREQUENCY
AUDIOPROCESSOR:
INPUTS: 1 FULLY DIFFERENTIAL, 1 DIFFER-
ENTIAL, 1 STEREO AND 1 MONO
INPUT GAIN FROM 0 TO 15dB (1dB STEP)
VOLUME CONTROL FROM +16 TO -63dB
(1dB STEP)
BASS AND TREBLE CONTROL FROM -18
TO 18dB (1dB STEP)
DIRECT MUTE, SOFT MUTE AND RADIO
MUTE
FOUR INDEPENDENT OUTPUT STAGES:
- ATTENUATION CONTROL FROM
0 TO -79dB (1dB STEP)
- BEEP CONTROL (ON/OFF, FRONT/REAR)
STEREO DECODER:
ROLL-OFF ADJUSTMENT
SELECTABLE DEEMPHASIS
19KHz CANCELLATION
HIGH CUT CONTROL
STEREO BLEND
NOISE BLANKER
AUTOMATIC THRESHOLD CONTROL AND
PROGRAMMABLE TRIGGER THRESHOLD
INTEGRATED HIGH PASS FILTER
PACKAGE: TQFP64 (14x14)
TQFP 64 (14x14)
ORDERING NUMBER: TDA7420
DESCRIPTION
The TDA7420 I2C bus controlled multifunction
audio processor contains all signal processing
blocks of a high performance car radio, including
audioprocessor, stereodecoder, noise blanker,
different mute functions, cassette preamplifier and
AMS function.
The use of BICMOS technology allows the imple-
mentation of several filter functions with switched
capacitor techniques like fully integrated, adjust-
ment free PLL Loop filter, pilot detector with inte-
grator.
This minimizes the number of external compo-
nents.
Due to a highly linear signal processing, using
CMOS-switching techniques instead of standard
bipolar multipliers, very low distortion and very
low noise are obtained also in the stereodecoder
part.
Very low DC stepping is obtained by use of the
BICMOS technology.
May 1998
1/29


STMicroelectronics Electronic Components Datasheet

TDA7420 Datasheet

MULTIFUNCTIONAUDIO PROCESSOR

No Preview Available !

TDA7420
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
Tamb
Tstg
Parameter
Operating Supply Voltage
Operating Temperature Range
Storage Temperature Range
PIN CONNECTION
Value
10
-40 to 85
-55 to 150
Unit
V
°C
°C
AC_IN1_R
AC_OUT1_R
AC_OUT1_L
TREBLE_L
TREBLE_R
AC_OUT2_R
AC_OUT2_L
AC_IN2_L
AC_IN2_R
BASS2_R
BASS1_R
BASS2_L
BASS1_L
VCC
SDA
SCL
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1 48
2 47
3 46
4 45
5 44
6 43
7 42
8 41
9 40
10 39
11 38
12 37
13 36
14 35
15 34
16 33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
EQRI
INR2(FR)
INR1(RR)
GND_PRE
INL1(RL)
INL2(FL)
EQLI
EQLO
PREOUT_L
EQSW
BEEP
OUT_RL
OUT_FL
OUT_RR
OUT_FR
AMS_OUT
D94AU182
THERMAL DATA
Symbol
Rth j-pins
Parameter
Thermal Resistance Junction-pins
Value
max 85
Unit
°C/W
2/29


Part Number TDA7420
Description MULTIFUNCTIONAUDIO PROCESSOR
Maker ST Microelectronics
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TDA7420 Datasheet PDF





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