Description
The TLV320ADC3101 device 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 40-dB analog gain or AGC. A programmable
miniDSP is provided for custom audio processing.
Front-end input coarse attenuation of 0 dB, –6 dB, 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 an I2C interface, enabling
mono or stereo recording. Low power consumption
makes the TLV320ADC3101 ideal for batterypowered
portable equipment.

Features
• Stereo Audio ADC
– 92-dBA Signal-to-Noise Ratio
– Supports ADC Sample Rates From 8 kHz to
96 kHz
• Instruction-Programmable Embedded miniDSP
• Flexible Digital Filtering With RAM Programmable
Coefficient, Instructions, and Built-In Processing
Blocks
– 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 to 3.6 V
– Digital: Core: 1.65 V to 1.95 V,
I/O: 1.1 V–3.6 V
• 4-mm × 4-mm 24-Pin RGE (VQFN)

Applications
• Wireless Handsets
• Portable Low-Power Audio Systems
• Noise-Cancellation Systems
• Front-End Voice or Audio Processor for Digital
Audio