DESCRIPTION
The TLV320ADC3101-Q1 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-Q1 ideal for batterypowered
portable equipment.
The AGC programs to a wide range of attack
(7 ms–1.4 s) and decay (50 ms–22.4 s) 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.

FEATURES
• Qualified for Automotive Applications
• AEC-Q100 Test Guidance With the Following
Results:
– Device Temperature Grade 2: –40°C to
+105°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H1C
– Device CDM ESD Classification Level C3B
• 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–3.6 V
– Digital: Core: 1.65 V–1.95 V,
I/O: 1.1 V–3.6 V
• 4-mm × 4-mm 24-Pin RGE (QFN)

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