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4-channel PDM input to TDM or I2S output converter

Inventory: 500  
Limit:  50

Quality information

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& packaging information

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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
WQFN (RTE) | 20 3,000 | LARGE T&R
-40 to 125
Package | Pins WQFN (RTE) | 20
Package qty | Carrier: 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 125
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Features for the PCMD3140

  • 4-channel PDM microphones simultaneous conversion
  • PDM input to TDM or I2S output converter performance:
    • 127-dB dynamic range (DR) with high-performance, 5th-order PDM input
    • 117-dB dynamic range (DR) with high-performance, 4th-order PDM input
  • Channel summing mode, DR performance with high-performance, 4th-order PDM input:
    • 120-dB, 2-channel summing
  • Programmable PDM clock output :
    • 768 kHz to 6.144 MHz
  • Programmable output sample rate (fS) :
    • 8 kHz to 768 kHz
  • Programmable channel settings:
    • Digital volume control: –100 dB to 27 dB
    • Gain calibration: 0.1-dB resolution
    • Phase calibration: 163-ns resolution
  • Microphone bias or supply voltage generation
  • Low-latency signal processing filter selection
  • Programmable HPF and biquad digital filters
  • I2C control
  • Integrated high-performance audio PLL
  • Automatic clock divider setting configurations
  • Audio serial data interface:
    • Format: TDM, I2S, or left-justified (LJ)
    • Word length: 16 bits, 20 bits, 24 bits, or 32 bits
    • Master or slave interface
  • Single-supply operation: 3.3 V or 1.8 V
  • I/O-supply operation: 3.3 V or 1.8 V
  • Power consumption for 1.8-V supply:
    • TBD/channel at 16-kHz sample rate
    • TBD/channel at 48-kHz sample rate

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Description for the PCMD3140

The PCMD3140 is a high-performance, pulse-density-modulation (PDM) input to time-division multiplexing (TDM) or I2S output converter that supports simultaneous sampling of up to four digital channels for the PDM microphone input. The device integrates programable digital volume control, a microphone bias voltage, a phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, low-latency filter modes, and allows for output sample rates up to 768 kHz. The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with the I2C interface. Additionally, the PCMD3140 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 or 1.8 V, make the device an excellent choice for space-constrained audio systems in far-field microphone recording applications.

The PCMD3140 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.


Qty Price (USD)
1-99 2.727
100-249 2.39
250-999 1.675
1,000+ 1.35