PCM3140-Q1 Series
Automotive, quad-channel 768-kHz Burr-Brown™ audio analog-to-digital converter (ADC) with 106-dB SNR
Manufacturer: Texas Instruments
Catalog
Automotive, quad-channel 768-kHz Burr-Brown™ audio analog-to-digital converter (ADC) with 106-dB SNR
Key Features
• Multichannel high-performance ADC:4-channel analog microphones or line-in,8-channel digital PDM microphones, orCombination of analog and digital microphonesADC line and microphone differential input performance:Dynamic range (DR): 106dBTHD+N: –98dBADC channel summing mode, DR performance:109dB, 2-channel summing112dB, 4-channel summingADC input voltage:Differential, 2VRMS full-scale inputsSingle-ended, 1VRMS full-scale inputsADC sample rate (fS) = 8kHz to 768kHzProgrammable channel settings:Channel gain: 0dB to 42dB, 1dB stepsDigital volume control: –100dB to 27dBGain calibration with 0.1dB resolutionPhase calibration with 163ns resolutionProgrammable microphone bias or supply voltage generationLow-latency signal processing filter selectionProgrammable HPF and biquad digital filtersAutomatic gain controller (AGC)I2C or SPI controlsIntegrated high-performance audio PLLAutomatic clock divider setting configurationsAudio serial data interface:Format: TDM, I2S, or left-justified (LJ)Word length: 16 bits, 20 bits, 24 bits, or 32 bitsController or target interfaceSingle-supply operation: 3.3V or 1.8VI/O-supply operation: 3.3V or 1.8VPower consumption for 1.8V AVDD supply:8.5mW/channel at 16kHz sample rate9.2mW/channel at 48kHz sample rateMultichannel high-performance ADC:4-channel analog microphones or line-in,8-channel digital PDM microphones, orCombination of analog and digital microphonesADC line and microphone differential input performance:Dynamic range (DR): 106dBTHD+N: –98dBADC channel summing mode, DR performance:109dB, 2-channel summing112dB, 4-channel summingADC input voltage:Differential, 2VRMS full-scale inputsSingle-ended, 1VRMS full-scale inputsADC sample rate (fS) = 8kHz to 768kHzProgrammable channel settings:Channel gain: 0dB to 42dB, 1dB stepsDigital volume control: –100dB to 27dBGain calibration with 0.1dB resolutionPhase calibration with 163ns resolutionProgrammable microphone bias or supply voltage generationLow-latency signal processing filter selectionProgrammable HPF and biquad digital filtersAutomatic gain controller (AGC)I2C or SPI controlsIntegrated high-performance audio PLLAutomatic clock divider setting configurationsAudio serial data interface:Format: TDM, I2S, or left-justified (LJ)Word length: 16 bits, 20 bits, 24 bits, or 32 bitsController or target interfaceSingle-supply operation: 3.3V or 1.8VI/O-supply operation: 3.3V or 1.8VPower consumption for 1.8V AVDD supply:8.5mW/channel at 16kHz sample rate9.2mW/channel at 48kHz sample rate
Description
AI
The PCM3140-Q1 is a Burr-Brown™ high-performance, audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to four analog channelsor eight 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 programable 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 768kHz, and allows for sample rates up to 192kHz. The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with either the I2C or SPI. These integrated high-performance features, along with the ability to be powered from a single-supply of 3.3V or 1.8V, make the device an excellent choice for space-constrained audio systems in far-field microphone recording applications.
The PCM3140-Q1 is specified from –40°C to +125°C, and is offered in a 24-pin VQFN package.
The PCM3140-Q1 is a Burr-Brown™ high-performance, audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to four analog channelsor eight 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 programable 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 768kHz, and allows for sample rates up to 192kHz. The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with either the I2C or SPI. These integrated high-performance features, along with the ability to be powered from a single-supply of 3.3V or 1.8V, make the device an excellent choice for space-constrained audio systems in far-field microphone recording applications.
The PCM3140-Q1 is specified from –40°C to +125°C, and is offered in a 24-pin VQFN package.
