PCM3120-Q1中文资料汽车类、立体声、106dB SNR、768kHz、低功耗、软件控制的音频 ADC数据手册TI规格书

特性 Features

• Multichannel high-performance ADC:
• 4-channel digital PDM microphones
• ADC line and microphone differential input performance:
• THD+N: –95 dB
• ADC channel summing mode, DR performance:
• ADC input voltage:
• Single-ended, 1-VRMS full-scale inputs
• ADC sample rate (fS) = 8 kHz to 768 kHz
• Channel gain: 0 dB to 42 dB, 0.5-dB steps
• Gain calibration with 0.1-dB resolution
• Programmable microphone bias or supply voltage generation
• Programmable HPF and biquad digital filters
• Voice activity detection (VAD)
• Integrated high-performance audio PLL
• Audio serial data interface:
• Word length: 16 bits, 20 bits, 24 bits, or 32 bits
• Single-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