PCM5120-Q1数据手册TI中文资料规格书

特性 Features

• Multichannel high-performance ADC:
• 2-channel analog microphones or line-in
• 4-channel digital PDM microphones
• Up to 2 analog and up to 2 digital microphone channels

• ADC line and microphone differential input performance:
• Dynamic range (DR):
• 120-dB, dynamic range enhancer (DRE) enabled
• 108-dB, DRE disabled

• THD+N: –95 dB

• ADC channel summing mode, DR performance:
• 111-dB, DRE disabled, 2-channel summing

• ADC input voltage:
• Differential, 2-VRMS full-scale inputs
• Single-ended, 1-VRMS full-scale inputs

• ADC sample rate (fS) = 8 kHz to 768 kHz
• Programmable channel settings:
• Channel gain: 0 dB to 42 dB, 0.5-dB steps
• Digital volume control: –100 dB to 27 dB
• Gain calibration with 0.1-dB resolution
• Phase calibration with 163-ns resolution

• Programmable microphone bias or supply voltage generation
• Low-latency signal processing filter selection
• Programmable HPF and biquad digital filters
• Automatic gain controller (AGC)
• Voice activity detection (VAD)
• I2C control interface
• 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 AVDD supply:
• 9.5 mW/channel at 48-kHz sample rate