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音訊、觸覺和壓電
音訊轉換器
音訊 ADC

PCMD3140

現行

四通道 PDM 輸入至 TDM 或 I²S 輸出轉換器

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產品規格表

PCMD3140

現行
產品規格表 立即訂購

產品詳細資料

Number of ADC channels 4 Sampling rate (max) (kHz) 768 Analog inputs 0 Control interface I2C Digital audio interface I2S, L, TDM ADC SNR (typ) (dB) 127 Rating Catalog Operating temperature range (°C) -40 to 125 Analog outputs 0
Number of ADC channels 4 Sampling rate (max) (kHz) 768 Analog inputs 0 Control interface I2C Digital audio interface I2S, L, TDM ADC SNR (typ) (dB) 127 Rating Catalog Operating temperature range (°C) -40 to 125 Analog outputs 0
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 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.

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.
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重要文件 類型 標題 格式選項 日期
* Data sheet PCMD3140 Quad-Channel, PDM Input to TDM or I2S Output Converter datasheet (Rev. A) PDF | HTML 2021年 6月 25日
Application note Analog Microphone and ADC System in Far-field Application (Rev. B) PDF | HTML 2023年 12月 11日
Analog Design Journal Selecting capacitors to minimize distortion in audio applications (Rev. A) PDF | HTML 2023年 5月 2日

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PCMD3140EVM-PDK — 適用四通道 PDM 輸入到 TDM 或 I²S 輸出轉換器的 PCDM3140 評估模組

PCMD3140 評估模組 (EVM) 性能展示套件 (PDK) 可讓使用者測試 PCMD3140 的功能。PCMD3140 是高性能、脈衝密度調變 (PDM) 輸入至分時多工 (TDM) 或 IC 間音效 (I2S) 輸出轉換器，可針對 PDM 麥克風輸入支援同時採樣最多四個數位通道。

PCMD3140 EVM 與 AC-MB (隨附於套件內) 配對，此彈性音訊轉換器主機板可爲 EVM 提供電源、控制及數位音訊資料。

使用指南: PDF | HTML
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PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

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PCMD31XX-DRIVERS — PCMD31xx ADC 系列 Linux 驅動程序支持

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ADCX120EVM-SW — GUI and software for PurePath™ Console 3 for ADC3120EVM-PDK, ADC5120EVM-PDK and ADC6120EVM-PDK

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SBAC292 — PCMD31x0 C Source Headers

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PCMD3140 IBIS Model

SBAM453.ZIP (67 KB) - IBIS Model
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