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TLV320AIC22C PDF预览

TLV320AIC22C

更新时间： 2024-11-22 22:49:43
品牌 Logo 应用领域
德州仪器 - TI 解码器编解码器
页数 文件大小 规格书
52页 703K
描述
DUAL VOICE OVER INTERNET PROTOCOL CODEC

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TLV320AIC22C 数据手册

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SPAS041B – OCTOBER 2001 – REVISED JANUARY 2003  
D
D
Two 16-Bit Analog-to-Digital Converters  
(ADCs)  
D
Supports 8- and 16-kHz Sampling Rates  
D
Preamplifiers for Microphone, Handset,  
Headset, and Speakerphone Gain  
Two 16-Bit Digital-to-Analog Converters  
(DACs)  
2
Selectable Via the Serial Port or I C Bus  
D
Programmable Input/Output Gain  
D
D
2.5-V Microphone Bias Voltage  
D
Analog Crosspoint to Connect the Two  
Coders/Decoders (Codecs) to Any of the  
I/O Ports – Controlled Through the Serial  
Seamless Interface to a Single Multichannel  
Buffered Serial Port (McBSP) of a C54x or  
a C6x Digital Signal Processor (DSP)  
2
Port or the Inter-Integrated Circuit (I C) Bus  
D
Four TLV320AIC22C ICs Can Be Cascaded  
Together to Allow up to Eight Channels  
D
8-Bit A-Law/µ-Law Companded Data or  
16-Bit Linear Data Complying With G.711  
Standard  
D
D
D
D
D
D
D
D
2s-Complement Data Format  
Differential Outputs  
D
D
D
D
Filters Comply With G.712 and G.722  
Standards  
Typical Low Crosstalk < –85 dB  
Hardware/Software Power Down  
Independent Power Down for Drivers  
Single 3.3-V Supply Operation  
120-mW Typical Power Consumption  
Programmable Analog-to-Digital and  
Digital-to-Analog Conversion Rate  
Typical 77-dB Signal-to-Noise + Distortion  
for ADC  
Typical 78-dB Signal-to-Noise + Distortion  
for DAC  
Available in 48-Terminal Low-Profile Plastic  
Quad Flatpack (LQFP) Package  
description  
The TLV320AIC22C contains two coders/decoders (codecs) for voice applications, including voice over internet  
protocol (VoIP). It features two analog-to-digital converter (ADC) channels and two digital-to-analog converter  
(DAC) channels that can be connected to a handset, headset, speaker, microphone, or a subscriber line via an  
analog crosspoint.  
The TLV320AIC22C has a flexible serial interface that allows the two channels of the TLV320AIC22C to be  
interfaced to a single multichannel buffered serial port (McBSP) of the external digital signal processor (DSP).  
The two channels share the digital interface at different time slots. Up to four TLV320AIC22C units can be  
cascaded together to obtain eight channels. For control purposes, either the serial interface or the  
2
inter-integrated circuit (I C) interface can be used. Programmable-gain amplifiers (PGAs), preamp gain,  
2
microphone bias voltages, and analog crosspoint are programmed through the serial interface or the I C  
interface. The TLV320AIC22C can be powered down, via a dedicated terminal or by using software control, to  
reduce power dissipation.  
The TLV320AIC22C is available in a 48-terminal LQFP package and is characterized for operation from –40°C  
to 85°C.  
ORDERING INFORMATION  
PACKAGE  
PLASTIC QUAD  
FLATPACK  
(PT)  
T
A
–40°C to 85°C  
TLV320AIC22CPT  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
C54x and TMS320C54x are trademarks of Texas Instruments Incorporated.  
Copyright 2003, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...52

中文翻译

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TLV320AIC22C 替代型号

型号 品牌 替代类型 描述 数据表
TLV320AIC22 TI

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