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
- 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.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | PCMD3140 Quad-Channel, PDM Input to TDM or I2S Output Converter datasheet (Rev. A) | PDF | HTML | 2021/6/25 | ||
| 應用說明 | Analog Microphone and ADC System in Far-field Application (Rev. B) | PDF | HTML | 2023/12/11 | |||
| 類比設計期刊 | Selecting capacitors to minimize distortion in audio applications (Rev. A) | PDF | HTML | 2023/5/2 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
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。
PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development
PurePath™ Console 是一款高度整合且容易使用的音訊開發套件，專爲簡化音訊產品開發相關評估、配置和偵錯程序所設計。瞭解使用 PurePath™ Console 3 軟體有多簡單。
PurePath Console 的直覺式圖形介面無需進階音訊工程專業，因此讓音訊設計更加簡明直觀。在簡單易用的圖形介面中，實作 PurePath Console 的眾多進階控制功能，並以縮短產品開發時間為目標，為您實現高度最佳化的音訊性能、最低功耗和順暢系統整合。支援的裝置：
PurePath™ Console 1：PCM5142、TAS5721、TAS5729MD、TAS5731 和 (...)
PCMD31XX-DRIVERS — PCMD31xx ADC 系列 Linux 驅動程序支持
Linux 主線路狀態
在 Linux 主線路中可用：是
可透過 git.ti.com 取得：不適用
其他文件：
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
(...)
SBAC292 — PCMD31x0 C Source Headers
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTE) | 20 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。