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Texas Instruments PCM6120-Q1 Audio Analog-to-Digital Converter

Texas Instruments PCM6120-Q1 Audio Analog-to-Digital Converter is a Burr-Brown™ high-performance converter with an 8kHz to 768kHz ADC sample rate. This converter supports simultaneous sampling of up to four digital channels or two analog channels for the Pulse Density Modulation (PDM) microphone input. This converter also supports audio serial data interfaces, including Time-Division Multiplexing (TDM), I2S, and Left-Justified (LJ) formats. The PCM6120-Q1 converter integrates programmable channel gain, a programmable microphone bias voltage, a Phase-Locked Loop (PLL), digital volume control, and a programmable High-Pass Filter (HPF).

The PCM6120-Q1 converter features Voice Activity Detection (VAD), Automatic Gain Controller (AGC), and automatic clock divider setting configurations. This converter is powered by 3.3V or 1.8V single-supply and is available in a 20-pin WQFN package. The PCM6120-Q1 converter is used in automatic head unit, rear seat entertainment, telematics control unit, and automotive active noise cancellation applications.

Features

  • Multichannel high-performance ADC:
    • 2-channel analog microphones or line-in
    • 4-channel digital PDM microphones
    • Up to 2 analog and up to 2 digital microphone channels
  • ADC line and microphone differential input performance:
    • Dynamic Range (DR):
      • 123dB, Dynamic Range Enhancer (DRE) enabled
      • 113dB, DRE disabled
    • –95dB THD+N
  • ADC input voltage:
    • Differential, 2VRMS full-scale inputs
    • Single-ended, 1VRMS full-scale inputs
  • Audio serial data interface:
    • TDM, I2S, or Left-Justified (LJ) format
    • 16bits, 20bits, 24bits, or 32bits word length
    • Master or slave interface
  • Programmable channel settings:
    • 0dB to 42dB, 0.5dB steps channel gain
    • –100dB to 27dB digital volume control
    • Gain calibration with 0.1dB resolution
    • Phase calibration with 163ns resolution
  • Programmable microphone bias or supply voltage generation
  • Low-latency signal processing filter selection
  • Programmable HPF and biquad digital filters
  • Automatic Gain Controller (AGC)
  • Voice Activity Detection (VAD)
  • I2C control interface
  • Integrated high-performance audio PLL
  • Automatic clock divider setting configurations
  • 8kHz to 768kHz ADC sample rate (fS)
  • 3.3V or 1.8V single-supply operating voltage
  • 3.3V or 1.8V I/O supply operating voltage
  • 9.5mW/channel power consumption for 1.8V AVDD supply at 48kHz sample rate

Applications

  • Automotive active noise cancellation
  • Automotive head unit
  • Digital cockpit processing unit
  • Telematics control unit
  • Rear seat entertainment

Simplified Block Diagram

Block Diagram - Texas Instruments PCM6120-Q1 Audio Analog-to-Digital Converter
Publicado: 2024-04-17 | Actualizado: 2025-03-06