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SSM2160_03

更新时间： 2024-11-02 04:02:43
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 270K
描述
6-Channel, Serial Input Master/Balance Volume Controls

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SSM2160_03 数据手册

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6-Channel, Serial Input  
Master/Balance Volume Controls  
SSM2160  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Clickless Digitally Controlled Level Adjustment  
SSM2160: 6 Channels  
7-Bit Master Control Gives 128 Levels of Attenuation  
5-Bit Channel Controls Give 32 Levels of Gain  
Master/Channel Step Size Set by External Resistors  
100 dB Dynamic Range  
V+  
POWER  
CH1 IN  
SUPPLY AND  
V–  
REFERENCE  
GENERATOR  
VCA  
VCA  
VCA  
VCA  
VCA  
VCA  
V
CH1 OUT  
REF  
Automatic Power-On Mute  
Excellent Audio Characteristics:  
0.01% THD+N  
0.001% IMD (SMPTE)  
–90 dBu Noise Floor  
–80 dB Channel Separation  
90 dB SNR  
Single-and Dual-Supply Operation  
5-BIT  
CHANNEL  
DAC  
CH2 IN  
CH2 OUT  
5-BIT  
CHANNEL  
DAC  
CH3 IN  
APPLICATIONS  
Home Theater Receivers  
Surround Sound Decoders  
CH3 OUT  
Circle Surround® and AC-3® Decoders  
DSP Soundfield™ Processors  
HDTV and Surround TV Audio Systems  
Automotive Surround Sound Systems  
Multiple Input Mixer Consoles and Amplifiers  
5-BIT  
CHANNEL  
DAC  
CH4 IN  
CH4 OUT  
GENERAL DESCRIPTION  
5-BIT  
CHANNEL  
DAC  
The SSM2160 allows digital control of volume of six audio  
channels, with a master level control and individual channel  
controls. Low distortion VCAs (voltage controlled amplifiers) are  
used in the signal path. By using controlled rate-of-change drive  
to the VCAs, the “clicking” associated with switched resistive  
networks is eliminated in the master control. Each channel is  
controlled by a dedicated 5-bit DAC providing 32 levels of gain.  
A master 7-bit DAC feeds every control port giving 128 levels of  
attenuation. Step sizes are nominally 1 dB and can be changed by  
external resistors. Channel balance is maintained over the entire  
master control range. Upon power-up, all outputs are automati-  
cally muted. A 3-wire or 4-wire serial data bus enables interfacing  
with most popular microcontrollers. Windows® software and an  
evaluation board for controlling the SSM2160 are available.  
CH5 IN  
CH5 OUT  
5-BIT  
CHANNEL  
DAC  
CH6 IN  
CH6 OUT  
5-BIT  
CHANNEL  
DAC  
CH SET  
STEP SIZE  
ADJUST  
The SSM2160 can be operated from single supplies of +10 V to  
+20 V or dual supplies from 5 V to 10 V. An on-chip reference  
provides the correct analog common voltage for single-supply  
applications. The SSM2160 comes in a SOIC package; see the  
Ordering Guide for details.  
7-BIT  
MASTER  
DAC  
MSTR SET  
MSTR OUT  
CLK  
DATA  
LD  
SHIFT REGISTER  
AND  
ADDRESS  
DECODER  
SSM2160  
WRITE  
REV. A  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  
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