TLV320ADC6120中文资料具有 123dB SNR 的立体声通道、768kHz、Burr-Brown™ 音频模数转换器 (ADC)数据手册TI规格书

描述 Description

The TLV320ADC6120 is a Burr-Brown™ high-performance, audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to two analog channels or four digital channels for the pulse density modulation (PDM) microphone input. The device supports line and microphone inputs, and allows for both single-ended and differential input configurations. The device integrates programmable channel gain, digital volume control, a programmable microphone bias voltage, a phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, low-latency filter modes, and allows for sample rates up to 768 kHz, and allows for sample rates up to 192 kHz. The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with the I2C interface. These integrated high-performance features, along with the ability to be powered from a single-supply of 3.3 V or 1.8 V, make the device an excellent choice for space-constrained audio systems in far-field microphone recording applications.

The TLV320ADC6120 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.

特性 Features

• Multichannel high-performance ADC:
• 4-channel digital PDM microphones
• ADC line and microphone differential input performance:
• 123-dB, dynamic range enhancer (DRE) enabled
• 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