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Texas Instruments PCM4220/PCM4222 Audio ADCs

Texas Instruments PCM4220/PCM4222 Audio Analog-to-Digital Converters (ADCs) are high-performance, two-channel ADCs specifically designed for professional audio applications. Both series provide outstanding dynamic performance. The PCM4220 123dB SNR ADCs provide 24-bit linear PCM output data with support for output word length reduction to 20-, 18-, or 16-bits. The PCM4220 devices include three sampling modes and support output sampling rates from 8kHz to 216kHz. The PCM4222 123dB SNR ADCs support 24-bit linear PCM, 1-bit Direct Stream Digital (DSD), and 6-bit modulator data outputs. PCM4222's multi-bit modulator output adds versatility, allowing customers to design their digital decimation filter and processing hardware. The on-chip, linear phase decimation filtering engine on the PCM4222 supports Classic and Low Group Delay filter responses, allowing optimization for either studio or live sound applications. The design of the Texas Instruments PCM4220/PCM4222 Audio ADCs makes these devices ideal for digital audio recording and processing.

Features

  • PCM4220 Supports Linear PCM Output Data/PCM4222 Supports Linear PCM, 1-Bit Direct Stream Digital (DSD), and Multi-Bit Modulator Output Data
  • PCM4222 Users Can Choose From 64x or 128x Oversampled Output Rates for DSD
  • Supports Output Sampling Rates from 8kHz to 216kHz
  • Differential Voltage Inputs
  • Low-power Dissipation
    • 305mW typical for 48kHz sampling rate
    • 330mW typical for 96kHz sampling rate
    • 340mW typical for 192kHz sampling rate
  • Linear Phase Digital Decimation Filtering
    • Select from Classic or Low Group Delay Filter Responses
  • Low Passband Ripple
  • ±0.00015dB Classic 
  • ±0.001dB Low Group Delay 
  • Digital-High-Pass Filtering Removes DC Offset
    • Left and Right Channel Filters May Be Disabled Independently
  • Audio Serial Port Interface
    • Master or Slave Mode Operation
    • Supports Left-Justified, I2S, and TDM Data Formats Output Word Length Reduction
  • Overflow Indicators for the Left and Right Channels
  • +4.0V nominal Analog Power Supply
  • +3.3V nominal Digital Power Supply
  • 4mW typical Power-Down Mode
  • Package: TQFP-48, RoHS compliant

Applications

  • Digital Audio Recorders and Mixing Desks
  • Digital Live Sound Consoles
  • Digital Audio Effects Processors
  • Surround Sound Encoders
  • Broadcast Studio Equipment
  • Audio Test and Measurement
  • Sonar Systems
  • High-Performance Data Acquisition

Datasheets

Published: 2008-02-26 | Updated: 2022-08-25