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PCM1821

ACTIVE

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

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Data sheet

PCM1821

ACTIVE
Data sheet Order now

Product details

Number of ADC channels 2 Sampling rate (max) (kHz) 192 Analog inputs 2 Control interface H/W Digital audio interface I2S, TDM THD+N (dB) -95 ADC SNR (typ) (dB) 106 Rating Catalog Operating temperature range (°C) -40 to 125 Analog outputs 0
Number of ADC channels 2 Sampling rate (max) (kHz) 192 Analog inputs 2 Control interface H/W Digital audio interface I2S, TDM THD+N (dB) -95 ADC SNR (typ) (dB) 106 Rating Catalog Operating temperature range (°C) -40 to 125 Analog outputs 0
WQFN (RTE) 20 9 mm² (3 mm × 3 mm)
  • 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
  • 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

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.

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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* Data sheet PCM182x Stereo Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet (Rev. A) PDF | HTML Jun 25, 2021
Application note Working With Analog Inputs in the TLV320ADCX120 and PCMX120-Q1 Family PDF | HTML Jul 17, 2023

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Evaluation board

PCM1821EVM — PCM1821 stereo-channel, 32-bit, 192-kHz, audio ADC with 106-dB SNR evaluation module

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, (...)

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Simulation model

PCM1820 and PCM1821 IBIS Model

SBAM449.ZIP (67 KB) - IBIS model
Supported products & hardware
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WQFN (RTE) 20 Ultra Librarian
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