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PCM1821

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Stereo-channel, 32-bit, 192-kHz, audio analog-to-digital converter (ADC) with 106-dB SNR

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Product details

Parameters

Number of ADC channels 2 Analog inputs 2 Digital audio interface I2S, TDM Control interface H/W Sampling rate (Max) (kHz) 192 ADC SNR (Typ) (dB) 106 Rating Catalog open-in-new Find other Audio ADCs

Package | Pins | Size

WQFN (RTE) 20 open-in-new Find other Audio ADCs

Features

  • Stereo high-performance ADC:
    • 2-channel analog microphones or line-in
  • ADC line and microphone differential input performance:
    • PCM1820 dynamic range:
      • 123-dB, dynamic range enhancer enabled
      • 113-dB, dynamic range enhancer disabled
    • PCM1821 dynamic range: 106 dB
    • THD+N: –98 dB
  • ADC differential 2-VRMS full-scale input
  • ADC sample rate (fS) = 8 kHz to 192 kHz
  • Hardware pin control configurations
  • Linear-phase or low-latency filter selection
  • Flexible audio serial data interface:
    • Master or slave interface selection
    • 32-bits, 2-channel TDM
    • 32-bits, 2-channel I2S
  • Automatic power-down upon loss of audio clocks
  • Integrated high-performance audio PLL
  • Single-supply operation: 3.3 V
  • I/O-supply operation: 3.3 V or 1.8 V
  • Power consumption for 3.3-V AVDD supply:
    • TBD mW/channel at 16-kHz sample rate
    • TBD mW/channel at 48-kHz sample rate

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Description

The PCM182x is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to two analog channels. The device supports differential line and microphone inputs with a 2-VRMS full-scale signal. The device integrates a phase-locked loop (PLL), a DC removal high-pass filter (HPF), and supports sample rates up to 192 kHz. The device supports time-division multiplexing (TDM) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM182x supports master and slave mode selection for the audio bus interface operation. These integrated high-performance features, along with the ability to be powered from a single supply of 3.3 V, make the device an excellent choice for cost-sensitive, space-constrained audio systems in far-field microphone recording applications.

The PCM182x is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.

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Technical documentation

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Type Title Date
* Datasheet PCM182x Stereo Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet Dec. 17, 2020
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

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WQFN (RTE) 20 View options

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