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


Product details


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


  • 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: –95 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:
    • 19.6 mW/channel at 16-kHz sample rate
    • 21.3 mW/channel at 48-kHz sample rate
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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
* Data sheet PCM182x Stereo Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet (Rev. A) Jun. 25, 2021
User guide PCM182xEVM User's Guide Feb. 03, 2021
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

Design & development

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Hardware development

document-generic User guide

The PCM1821 evaluation module (EVM) allows the user to test the capabilities of the PCM1821, which is a two-channel, hardware-controlled, high-performance, audio analog-to-digital converter (ADC). PCM1821 is intended for use in a wide range of applications including voice-activated systems (...)

  • Evaluation board for PCM1821 two-channel ADC
  • High-performance audio ADC: 106-dB dynamic range
  • Onboard microphone provided for voice-recording testing
  • Direct access to digital audio signals and control interface for simple end-system integration

Design tools & simulation

SBAM449.ZIP (67 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SBAC280.ZIP (462 KB)

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