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TDA7439 Datasheet

THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

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® TDA7439
THREE BANDS
DIGITALLY CONTROLLED AUDIO PROCESSOR
INPUT MULTIPLEXER
- 4 STEREO INPUTS
- SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
ONE STEREO OUTPUT
TREBLE, MIDDLE AND BASS CONTROL IN
2.0dB STEPS
VOLUME CONTROL IN 1.0dB STEPS
TWO SPEAKER ATTENUATORS:
- TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
SDIP30
DIP28
SO28
ORDERING NUMBERS: TDA7439 (SDIP30)
TDA7439B (DIP28)
TDA7439D (SO28)
DESCRIPTION
The TDA7439 is a volume tone (bass, middle and
treble) balance (Left/Right) processor for quality
audio applications in car-radio and Hi-Fi systems.
Selectable input gain is provided. Control of all
the functions is accomplished by serial bus.
BLOCK DIAGRAM (TDA7439)
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained
11
L-IN1
12
L-IN2
13
L-IN3
14
L-IN4
100K
100K
100K
100K
10
R-IN1
9
R-IN2
8
R-IN3
7
R-IN4
100K
100K
100K
100K
MUXOUTL INL
15 16
TREBLE(L) MIN(L) MOUT(L) BIN(L) BOUT(L)
27 26 25 23 24
RM RB
G
VOLUME
TREBLE
MIDDLE
BASS
SPKR ATT
LEFT
6
LOUT
0/30dB
2dB STEP
I2CBUS DECODER + LATCHES
30
SCL
1
SDA
29
DIG_GND
G
VOLUME
TREBLE
MIDDLE
BASS
SPKR ATT
RIGHT
VREF
INPUT MULTIPLEXER
+ GAIN
17 18
MUXOUTR INR
SUPPLY
RM RB
28 19 20 21 22 2
TREBLE(R) MIN(R) MOUT(R) BIN(R) BOUT(R) CREF
5
ROUT
3
4 VS
AGND
D95AU342B
April 1999
1/19


STMicroelectronics Electronic Components Datasheet

TDA7439 Datasheet

THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

No Preview Available !

TDA7439
BLOCK DIAGRAM (TDA7439B/TDA7439D)
4
L-IN1
100K
MUXOUTL
8
5
L-IN2
100K
6
L-IN3
100K
G VOLUME
7
L-IN4
100K
3
R-IN1
100K
0/30dB
2dB STEP
2
R-IN2
1
R-IN3
100K
100K
G VOLUME
28
R-IN4
100K
INPUT MULTIPLEXER
+ GAIN
9
MUXOUTR
TREBLE(L) MIN(L) MOUT(L) BIN(L) BOUT(L)
18 17 16 14 15
RM RB
TREBLE
MIDDLE
BASS
SPKR ATT
LEFT
I2CBUS DECODER + LATCHES
TREBLE
MIDDLE
BASS
SPKR ATT
RIGHT
VREF
SUPPLY
RM RB
19 10 11 12 13 23
TREBLE(R) MIN(R) MOUT(R) BIN(R) BOUT(R) CREF
27
LOUT
21
SCL
22
SDA
20
DIG_GND
26
ROUT
24
25 VS
AGND
D97AU621
PIN CONNECTION (SDIP30)
SDA
CREF
VS
AGND
ROUT
LOUT
R-IN4
R-IN3
R-IN2
R-IN1
L-IN1
L-IN2
L-IN3
L-IN4
MUXOUTL
1 30
2 29
3 28
4 27
5 26
6 25
7 24
8 23
9 22
10 21
11 20
12 19
13 18
14 17
15 16
D95AU340A
SCL
DIG_GND
TREBLE(R)
TREBLE(L)
MIN(L)
MOUT(L)
BOUT(L)
BIN(L)
BOUT(R)
BIN(R)
MOUT(R)
MIN(R)
INR
MUXOUTR
INL
2/19
®


Part Number TDA7439
Description THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
Maker ST Microelectronics
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TDA7439 Datasheet PDF






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