ZHCSMZ2A December 2020 – June 2021 PCMD3140
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Electrical Characteristics
- 6.6 Timing Requirements:?I2C Interface
- 6.7 Switching Characteristics: I2C Interface
- 6.8 Timing Requirements:?TDM, I2S or LJ Interface
- 6.9 Switching Characteristics: TDM, I2S or LJ Interface
- 6.10 Timing Requirements:?PDM Digital Microphone Interface
- 6.11 Switching Characteristics: PDM Digial Microphone Interface
- 6.12 Timing Diagrams
- 6.13 Typical Characteristics
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Serial Interfaces
- 7.3.2 Phase-Locked Loop (PLL) and Clock Generation
- 7.3.3 Reference Voltage
- 7.3.4 Microphone Bias
- 7.3.5 Digital PDM Microphone Record Channel
- 7.3.6
Signal-Chain Processing
- 7.3.6.1 Programmable Digital Volume Control
- 7.3.6.2 Programmable Channel Gain Calibration
- 7.3.6.3 Programmable Channel Phase Calibration
- 7.3.6.4 Programmable Digital High-Pass Filter
- 7.3.6.5 Programmable Digital Biquad Filters
- 7.3.6.6 Programmable Channel Summer and Digital Mixer
- 7.3.6.7
Configurable Digital Decimation Filters
- 7.3.6.7.1
Linear Phase Filters
- 7.3.6.7.1.1 Sampling Rate: 7.35 kHz to 8 kHz
- 7.3.6.7.1.2 Sampling Rate: 14.7 kHz to 16 kHz
- 7.3.6.7.1.3 Sampling Rate: 22.05 kHz to 24 kHz
- 7.3.6.7.1.4 Sampling Rate: 29.4 kHz to 32 kHz
- 7.3.6.7.1.5 Sampling Rate: 44.1 kHz to 48 kHz
- 7.3.6.7.1.6 Sampling Rate: 88.2 kHz to 96 kHz
- 7.3.6.7.1.7 Sampling Rate: 176.4 kHz to 192 kHz
- 7.3.6.7.1.8 Sampling Rate: 352.8 kHz to 384 kHz
- 7.3.6.7.1.9 Sampling Rate: 705.6 kHz to 768 kHz
- 7.3.6.7.2 Low-Latency Filters
- 7.3.6.7.3
Ultra-Low-Latency Filters
- 7.3.6.7.3.1 Sampling Rate: 14.7 kHz to 16 kHz
- 7.3.6.7.3.2 Sampling Rate: 22.05 kHz to 24 kHz
- 7.3.6.7.3.3 Sampling Rate: 29.4 kHz to 32 kHz
- 7.3.6.7.3.4 Sampling Rate: 44.1 kHz to 48 kHz
- 7.3.6.7.3.5 Sampling Rate: 88.2 kHz to 96 kHz
- 7.3.6.7.3.6 Sampling Rate: 176.4 kHz to 192 kHz
- 7.3.6.7.3.7 Sampling Rate: 352.8 kHz to 384 kHz
- 7.3.6.7.1
Linear Phase Filters
- 7.3.7 Voice Activity Detection (VAD)
- 7.3.8 Interrupts, Status, and Digital I/O Pin Multiplexing
- 7.4 Device Functional Modes
- 7.5 Programming
- 7.6 Register Maps
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
3 說明
PCMD3140 是一款高性能脈沖密度調制 (PDM) 輸入至時分多路復用 (TDM) 或 I2S 輸出轉換器，最多可支持對 PDM 麥克風輸入的四個數字通道進行同步采樣。該器件集成了可編程數字音量控制、麥克風偏置電壓、鎖相環 (PLL)、可編程高通濾波器 (HPF)、雙二階濾波器、低延遲濾波器模式，并可實現高達 768 kHz 的輸出采樣率。該器件支持時分多路復用 (TDM)、I2S 或左平衡 (LJ) 音頻格式，并可通過 I2C 接口進行控制。此外，PCMD3140 還支持主從模式選擇，從而實現音頻總線接口操作。這些集成的高性能特性，以及采用 3.3V 或 1.8V 單電源供電的功能，使該器件非常適用于遠場麥克風錄音應用中空間受限的音頻系統。
PCMD3140 的額定工作溫度范圍為 –40°C 至 +125°C，并且采用 20 引腳 WQFN 封裝。
器件信息(1)
| 器件型號 | 封裝 | 封裝尺寸（標稱值） |
|---|---|---|
| PCMD3140 | WQFN (20) | 3.00mm × 3.00mm，間距為 0.5mm |
(1) 如需了解所有可用封裝，請參閱數據表末尾的封裝選項附錄。
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