1 Features
1• Stereo Audio ADC:
– 92-dBA Signal-to-Noise Ratio
– Supports ADC Sample Rates From 8 kHz to
96 kHz
• Flexible Digital Filtering With Programmable
Coefficients and Built-In Processing Blocks:
– Low-Latency IIR Filters for Voice
– Linear Phase FIR Filters for Audio
– Up to 5 Additional Programmable Bi-Quad
Filters
– Programmable High-Pass Filter
• Four Audio Inputs With Configurable Automatic
Gain Control (AGC):
– Programmable in Single-Ended or Fully
Differential Configurations
– Optionally Tri-Stated for Easy Interoperability
With Other Audio Devices
• 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
• Programmable Microphone Bias
• Programmable PLL for Clock Generation
• I2C Control Bus
• Audio Serial Data Bus Supports I2S, Left- and
Right-Justified, DSP, PCM, and TDM Modes
• Power Supplies:
– Analog: 2.7 V to 3.6 V
– Digital: Core: 1.65 V to 1.95 V,
I/O: 1.1 V–3.6 V
• Package: 4-mm × 4-mm, 24-Pin RGE (VQFN)

2 Applications
• Voice-Activated Systems
• Smart Speakers, Voice-Enabled Assistants
• Portable Low-Power Audio Systems
• Noise-Cancellation Systems
• Front-End Voice or Audio Processors for Digital
Audio

3 Description
The TLV320ADC3100 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 (PGA) providing up to
40-dB analog gain or automatic gain control (AGC).
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. The TLV320ADC3100
integrates programable channel gain, digital volume
control, a phase-locked loop (PLL), programmable
biquad filters, and low latency filter modes. Preprogrammed
built-in processing blocks (PRBs) that
can be chosen based on the specific application
needs, allows optimization of performance and
power. Low power consumption coupled with its
flexibility make the TLV320ADC3100 ideal for batterypowered
portable equipment. The TLV320ADC3100
is form-factor and software compatible with the
TLV320ADC3101.