TLV320ADC3101 Datasheet, PDF (1/84 Pages) Texas Instruments – Low Power Stereo ADC for Wireless Handsets and Portable Audio

TLV320ADC3101
www.ti.com ........................................................................................................................................................................................... SLAS553 – NOVEMBER 2008
Low Power Stereo ADC for Wireless Handsets and Portable Audio
FEATURES
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•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
– 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
• 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
• 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
• 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
• 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)
APPLICATIONS
• Wireless Handsets
• Portable Low Power Audio Systems
• Noise Cancellation Systems
• Front-End Voice or Audio Processor for Digital
Audio
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
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.
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
programmed to support I²S, Left-justified,
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.
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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.
I2C is a trademark of Phillips Electronics.
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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