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PCMD3140-Q1

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Automotive, 127-dB SNR, 768-kHz, four-channel, PDM-input to TDM- or I²S-output converter

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Data sheet

PCMD3140-Q1

ACTIVE
Data sheet Order now

Product details

Number of ADC channels 4 Analog inputs 0 Digital audio interface I2S, L, TDM Control interface I2C Sampling rate (max) (kHz) 768 ADC SNR (typ) (dB) 127 Rating Automotive Analog outputs 0 Operating temperature range (°C) -40 to 125
Number of ADC channels 4 Analog inputs 0 Digital audio interface I2S, L, TDM Control interface I2C Sampling rate (max) (kHz) 768 ADC SNR (typ) (dB) 127 Rating Automotive Analog outputs 0 Operating temperature range (°C) -40 to 125
WQFN (RTE) 20 9 mm² 3 x 3
  • 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
  • Voice activity detection (VAD)
  • 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:
    • 2.8mW/channel at 16-kHz sample rate
    • 3.6 mW/channel at 48-kHz sample rate
  • 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
  • Voice activity detection (VAD)
  • 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:
    • 2.8mW/channel at 16-kHz sample rate
    • 3.6 mW/channel at 48-kHz sample rate

The PCMD3140-Q1 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-Q1 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-Q1 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.

The PCMD3140-Q1 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-Q1 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-Q1 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.
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* Data sheet PCMD3140-Q1 Quad-Channel, PDM Input to TDM or I2S Output Converter datasheet (Rev. A) PDF | HTML 12 Jul 2022

Design & development

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Evaluation board

PCMD3140Q1EVM-PDK — PCMD3140-Q1 evaluation module for four-channel, PDM-input to TDM- or I²S-output converter

The PCMD3140Q1EVM-PDK evaluation module (EVM) is used to test the capabilities of the PCMD3140-Q1 device. The PCMD3140-Q1 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 (...)

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Application software & framework

PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.
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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 (...)
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