Texas Instruments TLV320ADC3100 Stereo Analog-to-Digital Converter

Texas Instruments TLV320ADC3100 Stereo Analog-to-Digital Converter (ADC) is a low-power, stereo audio analog-to-digital converter (ADC) supporting sampling rates from 8kHz to 96kHz. These ADCs come with an integrated programmable-gain amplifier (PGA), providing up to 40dB analog gain or automatic gain control (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 an I2C interface, enabling mono or stereo recording. The TLV320ADC3100 integrates programmable channel gain, digital volume control, a phase-locked loop (PLL), programmable bi-quad filters, and low-latency filter modes. Pre-programmed built-in processing blocks (PRBs) that can be chosen based on the specific application needs, allows optimization of performance and power. Low power consumption and flexibility make the Texas Instruments TLV320ADC3100 ideal for battery-powered portable equipment.

Features

  • Stereo audio ADC
    • 92dBA signal-to-noise ratio
    • Supports ADC sample rates from 8kHz to 96kHz
  • 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 five 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
    • 6mW mono record, 8kHz
    • 11mW stereo record, 8kHz
    • 10mW mono record, 48kHz
    • 17mW stereo record, 48kHz
  • 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: 2.7V to 3.6V
    • Digital: Core: 1.65V to 1.95V, I/O: 1.1V–3.6V
  • 4mm × 4mm, 24-pin RGE (VQFN) package

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

Functional Block Diagram

Block Diagram - Texas Instruments TLV320ADC3100 Stereo Analog-to-Digital Converter
Opublikowano: 2018-05-31 | Zaktualizowano: 2023-02-02