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TDA7440

更新时间: 2024-11-15 22:53:11
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS /
页数 文件大小 规格书
17页 217K
描述
TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7440 数据手册

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TDA7440D  
TONE CONTROL  
DIGITALLY CONTROLLED AUDIO PROCESSOR  
1 FEATURES  
Figure 1. Package  
INPUT MULTIPLEXER  
– 4 STEREO INPUTS  
– SELECTABLE INPUT GAIN FOR OPTIMAL  
ADAPTATION TO DIFFERENT SOURCES  
ONE STEREO OUTPUT  
SO-28  
TREBLE AND BASS CONTROL IN 2.0dB  
STEPS  
Table 1. Order Codes  
Part Number  
TDA7440D  
Package  
SO-28  
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  
TDA7440D013TR  
Tape & Reel  
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.  
2 DESCRIPTION  
The TDA7440D is a volume tone (bass and treble)  
balance (Left/Right) processor for quality audio  
applications in Hi-Fi systems.  
Thanks to the used BIPOLAR/CMOS Technology,  
Low Distortion, Low Noise and DC stepping are  
obtained  
Figure 2. Block Diagram  
MUXOUTL INL  
TREBLE(L) BIN(L)  
BOUT(L)  
15  
4
5
6
7
8
9
18  
14  
L-IN1  
L-IN2  
L-IN3  
L-IN4  
100K  
100K  
100K  
100K  
RB  
27  
SPKR ATT  
LEFT  
G
VOLUME  
TREBLE  
BASS  
LOUT  
21  
22  
20  
0/30dB  
2dB STEP  
SCL  
I2CBUS DECODER + LATCHES  
3
SDA  
R-IN1  
R-IN2  
R-IN3  
R-IN4  
DIG_GND  
100K  
100K  
100K  
100K  
2
26  
SPKR ATT  
RIGHT  
G
VOLUME  
TREBLE  
BASS  
ROUT  
1
VREF  
24  
25  
28  
VS  
SUPPLY  
INPUT MULTIPLEXER  
+ GAIN  
AGND  
RB  
10  
11  
19  
12  
13  
23  
CREF  
D98AU883  
MUXOUTR INR  
TREBLE(R) BIN(R)  
BOUT(R)  
REV. 3  
1/17  
April 1999  

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