ZHCSPD7A April 2022 – September 2022 PCMD3140-Q1
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
- Timing Requirements:?PDM Digital Microphone Interface
- 6.10 Switching Characteristics: PDM Digial Microphone Interface
- 6.11 Timing Diagrams
- 6.12 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
7.3.6.7.1.5 Sampling Rate: 44.1 kHz to 48 kHz
Figure 7-27 and Figure 7-28 respectively show the magnitude response and the pass-band ripple for a decimation filter with a sampling rate of 44.1 kHz to 48 kHz. Table 7-23 lists the specifications for a decimation filter with a 44.1-kHz to 48-kHz sampling rate.
Figure 7-27 Linear Phase Decimation Filter Magnitude Response
Figure 7-28 Linear Phase Decimation Filter Pass-Band RippleTable 7-23 Linear Phase Decimation Filter Specifications
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Pass-band ripple | Frequency range is 0 to 0.454 × fS | –0.05 | 0.05 | dB | |
| Stop-band attenuation | Frequency range is 0.58 × fS to 4 × fS | 73.8 | dB | ||
| Frequency range is 4 × fS onwards | 98.1 | ||||
| Group delay or latency | Frequency range is 0 to 0.454 × fS | 17.1 | 1/fS |