ZHCSMY3 December 2020 PCM6020-Q1
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics
- 7.6 Timing Requirements:?I2C Interface
- 7.7 Switching Characteristics: I2C Interface
- 7.8 Timing Requirements:?SPI Interface
- 7.9 Switching Characteristics: SPI Interface
- 7.10 Timing Requirements:?TDM, I2S or LJ Interface
- 7.11 Switching Characteristics: TDM, I2S or LJ Interface
- 7.12 Timing Diagrams
- 7.13 Typical Characteristics
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Serial Interfaces
- 8.3.2 Phase-Locked Loop (PLL) and Clock Generation
- 8.3.3 Input Channel Configuration
- 8.3.4 Reference Voltage
- 8.3.5 Microphone Bias
- 8.3.6 Input DC Fault Diagnostics
- 8.3.7
Signal-Chain Processing
- 8.3.7.1 Programmable Channel Gain and Digital Volume Control
- 8.3.7.2 Programmable Channel Gain Calibration
- 8.3.7.3 Programmable Channel Phase Calibration
- 8.3.7.4 Programmable Digital High-Pass Filter
- 8.3.7.5 Programmable Digital Biquad Filters
- 8.3.7.6 Programmable Channel Summer and Digital Mixer
- 8.3.7.7
Configurable Digital Decimation Filters
- 8.3.7.7.1
Linear Phase Filters
- 8.3.7.7.1.1 Sampling Rate: 8 kHz or 7.35 kHz
- 8.3.7.7.1.2 Sampling Rate: 16 kHz or 14.7 kHz
- 8.3.7.7.1.3 Sampling Rate: 24 kHz or 22.05 kHz
- 8.3.7.7.1.4 Sampling Rate: 32 kHz or 29.4 kHz
- 8.3.7.7.1.5 Sampling Rate: 48 kHz or 44.1 kHz
- 8.3.7.7.1.6 Sampling Rate: 96 kHz or 88.2 kHz
- 8.3.7.7.1.7 Sampling Rate: 192 kHz or 176.4 kHz
- 8.3.7.7.1.8 Sampling Rate: 384 kHz or 352.8 kHz
- 8.3.7.7.1.9 Sampling Rate: 768 kHz or 705.6 kHz
- 8.3.7.7.2 Low-Latency Filters
- 8.3.7.7.3
Ultra-Low-Latency Filters
- 8.3.7.7.3.1 Sampling Rate: 16 kHz or 14.7 kHz
- 8.3.7.7.3.2 Sampling Rate: 24 kHz or 22.05 kHz
- 8.3.7.7.3.3 Sampling Rate: 32 kHz or 29.4 kHz
- 8.3.7.7.3.4 Sampling Rate: 48 kHz or 44.1 kHz
- 8.3.7.7.3.5 Sampling Rate: 96 kHz or 88.2 kHz
- 8.3.7.7.3.6 Sampling Rate: 192 kHz or 176.4 kHz
- 8.3.7.7.3.7 Sampling Rate: 384 kHz or 352.8 kHz
- 8.3.7.7.1
Linear Phase Filters
- 8.3.8 Automatic Gain Controller (AGC)
- 8.3.9 Interrupts, Status, and Digital I/O Pin Multiplexing
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6 Register Maps
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
8.3.7.7.3.3 Sampling Rate: 32 kHz or 29.4 kHz
Figure 8-55 shows the magnitude response and Figure 8-56 shows the pass-band ripple and phase deviation for a decimation filter with a sampling rate of 32 kHz or 29.4 kHz. Table 8-37 lists the specifications for a decimation filter with an 32-kHz or 29.4-kHz sampling rate.
Figure 8-55 Ultra-Low-Latency Decimation Filter Magnitude Response
Figure 8-56 Ultra-Low-Latency Decimation Filter Pass-Band Ripple and Phase
DeviationTable 8-37 Ultra-Low-Latency Decimation Filter Specifications
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Pass-band ripple | Frequency range is 0 to 0.457 × fS | –0.04 | 0.04 | dB | |
| Stop-band attenuation | Frequency range is 0.6 × fS onwards | 88.3 | dB | ||
| Group delay or latency | Frequency range is 0 to 0.325 × fS | 5.2 | 1/fS | ||
| Group delay deviation | Frequency range is 0 to 0.325 × fS | –0.492 | 0.492 | 1/fS | |
| Phase deviation | Frequency range is 0 to 0.325 × fS | –9.5 | 13.5 | Degrees |