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PCM1840

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Quad-channel 32-bit 192-kHz audio analog-to-digital converter (ADC)

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Product details

Parameters

Number of ADC channels 4 Analog inputs 4 Digital audio interface I2S, L, TDM Control interface H/W Sampling rate (Max) (kHz) 768 ADC SNR (Typ) (dB) 113 Rating Catalog open-in-new Find other Audio ADCs

Package | Pins | Size

WQFN (RTW) 24 16 mm² 4 x 4 open-in-new Find other Audio ADCs

Features

  • Multichannel high-performance ADC:
    • 4-channel analog microphones or line-in
  • ADC line and microphone differential input performance:
    • Dynamic range:
      • 123-dB, dynamic range enhancer enabled
      • 113-dB, dynamic range enhancer disabled
    • 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, 4-channel TDM
    • 32-bits, 2-channel TDM
    • 32-bits, 2-channel I2S
    • 32-bits, 2-channel left-justified (LJ)
  • Automatic power-down upon loss of audio clocks
  • Integrated high-performance audio PLL
  • Low-noise MICBIAS 2.75-V output
  • 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:
    • 17.0 mW/channel at 16-kHz sample rate
    • 18.4 mW/channel at 48-kHz sample rate

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Description

The PCM1840 is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to four analog channels. The device supports differential line and microphone inputs with 2-VRMS full-scale signal. The device integrates microphone bias voltage, 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), I2S, or left-justified (LJ) audio formats, selectable with the hardware pin level. Additionally, the PCM1840 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 PCM1840 is specified from –40°C to +125°C, and is offered in a 24-pin WQFN package.




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Technical documentation

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Type Title Date
* Datasheet PCM1840 Quad Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet Apr. 01, 2020
User guide PCM1840 Evaluation Module User's Guide Mar. 03, 2020
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

Design & development

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Hardware development

EVALUATION BOARD Download
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Description

The PCM1840 evaluation module (EVM) allows the user to test the capabilities of the PCM1840 product, which is a hardware-controlled quad-channel high-performance audio analog-to-digital converter (ADC). PCM1840 is intended for use in a wide range of applications (...)

Features
  • Complete evaluation kit for PCM1840 quad-channel ADC
  • High-performance audio ADC: 123-dB dynamic range with dynamic range enhancer (DRE)
  • Onboard microphone provided for voice-recording testing
  • Direct access to digital audio signals and control interface for simple end-system integration

Design tools & simulation

SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
WQFN (RTW) 24 View options

Ordering & quality

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