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TLV320ADC3101

更新时间： 2024-11-23 06:02:15
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德州仪器 - TI 手机便携式无线
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84页 1174K
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Low Power Stereo ADC for Wireless Handsets and Portable Audio

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TLV320ADC3101  
www.ti.com ........................................................................................................................................................................................... SLAS553–NOVEMBER 2008  
Low Power Stereo ADC for Wireless Handsets and Portable Audio  
1
FEATURES  
APPLICATIONS  
•
•
•
•
Wireless Handsets  
Portable Low Power Audio Systems  
Noise Cancellation Systems  
Front-End Voice or Audio Processor for Digital  
Audio  
2
•
Stereo Audio ADC  
–
–
92-dBA Signal-to-Noise Ratio  
Supports ADC Sample Rates From 8 kHz to  
96 kHz  
•
Flexible Digital Filtering with RAM  
Programmable Coefficient, Instructions, and  
Built-In Standard Modes  
DESCRIPTION  
The TLV320ADC3101 is a low power, stereo audio  
Analog to Digital Converter (ADC) supporting  
sampling rates from 8 kHz to 96 kHz with an  
integrated programmable gain amplifier providing up  
to 40dB analog gain or AGC. Front-end input coarse  
attenuation of 0dB, –6dB, or off, is also provided. The  
–
–
–
Low Latency IIR Filters for Voice  
Linear Phase FIR Filters for Audio  
Additional Programmable IIR Filters for EQ,  
Noise Cancellation or Reduction  
–
Up to 128 Programmable ADC Digital Filter  
Coefficients  
inputs are programmable in  
a combination of  
single-ended or fully differential configurations.  
Extensive register-based power control is available  
via I2C, enabling mono or stereo recording. Low  
power consumption makes the TLV320ADC3101  
ideal for battery-powered portable equipment.  
•
•
Six Audio Inputs With Configurable Automatic  
Gain Control (AGC)  
–
Programmable in Single-Ended or Fully  
Differential Configurations  
–
Can be 3-Stated for Easy Interoperability  
With Other Audio ICs  
The AGC programs to a wide range of attack  
(7ms – 1.4s) and decay (50ms – 22.4s) times. A  
programmable noise gate function is included to  
avoid noise pumping. Low-latency IIR filters optimized  
for voice and telephony are available, as well as  
linear-phase FIR filters optimized for audio.  
Programmable IIR filters are also available and may  
be used for sound equalization, or to remove noise  
components. The audio serial bus can be  
Low Power Consumption and Extensive  
Modular Power Control:  
–
–
–
–
6-mW Mono Record 8-kHz  
11-mW Stereo Record, 8-kHz  
10-mW Mono Record, 48-kHz  
17-mW Stereo Record, 48-kHz  
programmed  
to  
support  
I2S,  
Left-justified,  
•
•
•
•
Dual Programmable Microphone Bias  
Programmable PLL for Clock Generation  
I2C™ Control Bus  
Audio Serial Data Bus Supports I2S,  
Left/Right-Justified, DSP, PCM, and TDM  
Modes  
Right-justified, DSP, PCM, and TDM modes. The  
audio bus may be operated in either master or slave  
mode.  
A programmable integrated PLL is included for  
flexible clock generation and support for all standard  
audio rates from a wide range of available MCLKs,  
varying from 512 kHz to 50 MHz, including the most  
popular cases of 12-MHz, 13-MHz, 16-MHz,  
19.2-MHz, and 19.68-MHz system clocks.  
•
•
•
Digital Microphone Input Support  
Two GPIOs  
Power Supplies:  
–
–
Analog: 2.6 V–3.6 V.  
Digital: Core: 1.65 V–1.95 V,  
I/O: 1.1 V–3.6 V  
•
4mm × 4mm 24-Pin RGE (QFN)  
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
I2C is a trademark of Phillips Electronics.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
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