TDA7442 Datasheet, PDF (1/17 Pages) STMicroelectronics – TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7442
TDA7442D
TONE CONTROL AND SURROUND
DIGITALLY CONTROLLED AUDIO PROCESSOR
1 FEATURES
■ 4 STEREO INPUTS
■ INPUT ATTENUATION CONTROL IN 0.5dB
STEP
■ TREBLE AND BASS CONTROL
■ TWO SURROUND MODE AVAILABLE WITH 4
SELECTABLE RESPONSES:
– MUSIC
– SIMULATED STEREO
■ TWO SPEAKER ATTENUATORS:
– 2 INDEPENDENT SPEAKER CONTROLS IN
1dB STEPS FOR BALANCE FACILITY
– INDEPENDENT MUTE FUNCTION
■ ALL FUNCTIONS PROGRAMMABLE VIA
SERIAL BUS
■ 2 MONITOR OUTPUT (ONLY FOR TDA7442)
2 DESCRIPTION
The TDA7442/42D is volume tone (bass and tre-
ble) balance (Left/Right) processors for quality au-
dio applications in TV and Hi-Fi systems.
It reproduces surround sound by using a program-
Figure 2. Pin Connections (Top views)
Figure 1. Packages
SO-28
Table 1. Order Codes
Part Number
TDA7442
TDA7442D
TDA7442D013TR
SDIP-32
Package
SDIP-32
SO-28
Tape & Reel
mable phase shifter. Control of all the functions is
accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the BIPOLAR/CMOS Technology used,
Low Distortion, Low Noise and DC stepping are
obtained.
R-IN2
1
32
R-IN3
R_IN3
1
28
R_IN4
R-IN1
2
31
R-IN4
R_IN2
2
27
LOUT
MONITOR(L)
3
30
L-OUT
R_IN1
3
26
ROUT
MONITOR(R)
4
29
R-OUT
L_IN1
4
25
AGND
L-IN1
5
28
AGND
L_IN2
5
L_IN3
6
24
V_S
23
CREF
L-IN2
6
L-IN3
7
27
V_S
26
CREF
L_IN4
7
MUXOUTL
8
SO28
22
SDA
21
SCL
L-IN4
8
25
SDA
SDIP32
MUXOUT(L)
9
24
SCL
IN(L)
9
20
DIG-GND
IN(L)
10
23
DIGGND
MUXOUT(R)
10
19
TREBLE(R)
MUXOUT(R)
11
22
TREBLE-R
IN(R)
11
18
TREBLE(L)
N.C.
12
21
N.C.
BIN(R)
12
17
PS1
IN(R)
13
20
TREBLE-L
BOUT(R)
13
16
LP
BIN(R)
14
19
PS1
BIN(L)
14
15
BOUT(L)
BOUT(R)
15
18
LP
D98AU948
BIN(L)
16
17
BOUT(L)
D01AU1247
June 2004
REV. 2
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