PCMD3140-Q1数据手册TI中文资料规格书

特性 Features

• 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