TDA7468D Datasheet, PDF (1/22 Pages) STMicroelectronics – TWO BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR WITH BASS ALC SURROUND

TDA7468D
TWO BANDS DIGITALLY CONTROLLED
AUDIO PROCESSOR WITH BASS ALC SURROUND
1 FEATURES
■ INPUT MULTIPLEXER
– 4 STEREO INPUTS
– SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
■ ONE STEREO OUTPUT
■ BASS ALC
■ TREBLE 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
■ EXTERNALLY ADJUSTABLE SURROUND
2 DESCRIPTION
The TDA7468D is a volume tone (bass and treble)
balance (Left/Right) processor for quality audio
Figure 1. Package
SO28
Table 1. Order Codes
Part Number
TDA7468D
TDA7468D13TR
Package
SO28
Tape & Reel
applications in Hi-Fi systems.
Selectable input gain is provided. 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 used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained
Figure 2. PIN CONNECTION (Top view)
June 2004
V_S
MIC
IN1_L
IN2_L
IN3_L
IN4_L
MUX_L
IS_L
TREBLE_L
BASSI_L
BASSO_L
OUT_L
DGND
SCL
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
D99AU1057
GND
CREF
IN1_R
IN2_R
IN3_R
IN4_R
MUX_R
IS_R
TREBLE_R
BASSI_R
BASSO_R
OUT_R
ALC
SDA
REV. 1
1/22