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TLV320AIC34

更新时间： 2024-09-21 05:29:11
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德州仪器 - TI 解码器编解码器便携式电话
页数 文件大小 规格书
91页 1109K
描述
FOUR-CHANNEL, LOW-POWER AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY

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TLV320AIC34 数据手册

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TLV320AIC34  
SLAS538–OCTOBER 2007  
FOUR-CHANNEL, LOW-POWER AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY  
1
FEATURES  
•
•
Digital Microphone Input Support  
234  
•
Four-Channel Audio DAC  
Concurrent Digital Microphone and Analog  
Microphone Support Available  
–
–
–
–
–
102-dBA Signal-to-Noise Ratio  
16/20/24/32-Bit Data  
•
•
Extensive Modular Power Control  
Power Supplies:  
Supports Rates From 8 kHz to 96 kHz  
3D/Bass/Treble/EQ/De-Emphasis Effects  
–
–
–
Analog: 2.7 V–3.6 V  
Digital Core: 1.525 V–1.95 V  
Digital I/O: 1.1 V–3.6 V  
Flexible Power Saving Modes and  
Performance Are Available  
•
Four-Channel Audio ADC  
•
Package: 6-mm × 6-mm 87-BGA  
–
–
–
92-dBA Signal-to-Noise Ratio  
APPLICATIONS  
Supports Rates From 8 kHz to 96 kHz  
•
Digital Cameras  
Digital Signal Processing and Noise  
Filtering Available During Record  
•
Smart Cellular Phones  
•
•
Twelve Audio Inputs  
DESCRIPTION  
–
Programmable in Single-Ended or Fully  
Differential Configurations  
The TLV320AIC34 is a low-power four-channel audio  
codec with four-channel headphone amplifier, as well  
as multiple inputs and outputs programmable in  
single-ended or fully differential configurations.  
Extensive register-based power control is included,  
enabling four-channel 48-kHz DAC playback as low  
as 15 mW from a 3.3-V analog supply, making it ideal  
for portable battery-powered audio and telephony  
applications.  
–
3-State Capability for Floating Input  
Configurations  
Fourteen Audio Output Drivers  
–
–
–
–
Stereo 8-Ω, 500-mW/Channel Speaker Drive  
Capability  
Multiple Fully Differential or Single-Ended  
Headphone Drivers  
The record path of the TLV320AIC34 contains  
integrated microphone bias, digitally controlled  
four-channel microphone preamplifier, and automatic  
gain control (AGC), with mix/mux capability among  
the multiple analog inputs. Programmable filters are  
available during record which can remove audible  
noise that can occur during optical zooming in digital  
cameras. The playback path includes mix/mux  
capability from the four-channel DAC and selected  
inputs, through programmable volume controls, to the  
various outputs.  
Multiple Fully Differential or Single-Ended  
Line Outputs  
Fully Differential Mono Outputs  
•
•
Low Power: 15-mW Stereo 48-kHz Playback  
With 3.3-V Analog Supply  
Ultralow-Power Mode With Passive Analog  
Bypass  
•
•
•
•
Programmable Input/Output Analog Gains  
Automatic Gain Control (AGC) for Record  
Programmable Microphone Bias Level  
Dual Programmable PLLs for Flexible Clock  
Generation  
I2C Control Bus  
•
•
Dual Audio Serial Data Busses  
–
Support I2S, Left/Right-Justified, DSP, PCM,  
and TDM Modes  
–
Enable Asynchronous Simultaneous  
Operation of Busses and Data Converters  
1
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.  
2
3
4
MicroStar Junior is a trademark of Texas Instruments.  
Bluetooth is a trademark of Bluetooth SIG, Inc.  
All other trademarks are the property of their respective owners.  
ADVANCE INFORMATION concerns new products in the sampling  
or preproduction phase of development. Characteristic data and  
other specifications are subject to change without notice.  
Copyright © 2007, Texas Instruments Incorporated  
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