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TDA7435

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
10页 92K
描述
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER

TDA7435 数据手册

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TDA7435  
DIGITALLY CONTROLLED AUDIO PROCESSOR  
WITH LOUDSPEAKERS EQUALIZER  
INPUT  
- FOUR HIGH PASS CHANNELS  
- TWO AUX STEREO CHANNELS  
VOLUME CONTROL IN 1dB STEPS WITH  
GAIN UP TO 15dB  
SOFT MUTE AND DIRECT MUTE  
FOUR AUXILIARY CHANNELS:  
- TWO SPEAKERSCONTROL IN 1dB STEP  
- TWO CHANNELS MULTIPLEXEDWITH  
THE HIGH PASS CHANNELS  
SO28  
ORDERING NUMBER: TDA7435D  
ALL FUNCTIONS PROGRAMMABLE VIA SE-  
RIAL I2 CBUS  
A second programmable high pass filtering pro-  
vides the loudspeakersequalization.  
The soft Mute function is implemented andcan be  
activated in two ways:  
1 Via serial bus (Mute byte, bit D0)  
DESCRIPTION  
The audioprocessor TDA7435 is an upgrade of  
the TDA731X audioprocessorfamily.  
2 Directly on pin 3 through an I/O line of the mi-  
crocontroller  
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.  
Very low DC stepping is obtained by use of a  
BICMOS technology.  
BLOCK DIAGRAM  
CSM  
SDA SCL DGND AGND CREF VCC  
3
27  
26  
25  
24  
23  
28  
12  
22  
HP FL 1  
21  
HP FILTER  
HP FILTER  
HP FILTER  
HP FILTER  
HP FL 2  
I2C BUS  
SUPPLY  
OUT REF  
20  
19  
HP FR 1  
HP FR 2  
10  
11  
13  
14  
9
HP FL OUT  
HP FR OUT  
HP RL OUT  
HP RR OUT  
AUX 2 OUT L  
AUX 2 OUT R  
AUX 1 OUT L  
SOFT  
MUTE  
18  
17  
HP RL 1  
HP RL 2  
16  
15  
6
HP RR 1  
HP RR 2  
AUX 2 IN L  
AUX 2 IN R  
MUX  
7
8
5
1
2
ATTENUATOR  
0/-79dB  
AUX 1 IN L  
AUX 1 IN R  
GAIN  
0-15dB/1dB step  
4
ATTENUATOR  
0/-79dB  
AUX 1 OUT R  
D96AU437A  
1/10  
November 1996  

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