TI TLV320ADC5140IRTWR

The TLV320ADC5140 is a high-performance audio ADC supporting simultaneous sampling of up to four analog channels or eight digital channels for PDM microphone inputs. The device supports line and microphone inputs with both single-ended and differential input configurations. It integrates programmable channel gain, digital volume control, programmable microphone bias voltage, PLL, programmable HPF, biquad filters, and a low-latency filter mode, achieving sampling rates up to 768kHz. The device supports TDM, I²S, or Left-Justified (LJ) audio formats and is controlled via I²C or SPI interfaces. These integrated high-performance features, combined with the ability to operate from a single 3.3V or 1.8V supply, make it an ideal choice for space-constrained audio systems in far-field microphone recording applications. The TLV320ADC5140 is rated for an operating temperature range of -40°C to +125°C and is available in a 24-pin WQFN package.

• Multi-channel high-performance ADC: 4-channel analog microphone or line input, 8-channel digital PDM microphone, or analog/digital microphone combination
• ADC line and microphone differential input performance: Dynamic Range (DR): 120dB with DRE enabled; 108dB with DRE disabled; THD+N: –98dB
• ADC channel summing mode DR performance: 111dB, DRE disabled, 2-channel sum; 114dB, DRE disabled, 4-channel sum
• ADC input voltage: differential 2VRMS full-scale input, single-ended 1VRMS full-scale input
• ADC sample rate (fS) = 8kHz to 768kHz programmable
• Channel settings: channel gain: 0dB to 42dB in 1dB steps; digital volume control: –100dB to 27dB; gain calibration resolution 0.1dB; phase calibration resolution 163ns
• Programmable microphone bias or supply voltage generation
• Low-latency signal processing filter selection, programmable HPF and biquad digital filters, automatic gain controller (AGC)
• I2C or SPI control
• Integrated high-performance audio PLL with auto clock divider configuration
• Audio serial data interface: formats: TDM, I2S, or Left-Justified (LJ); word length: 16-bit, 20-bit, 24-bit, or 32-bit; master/slave interface
• Single-supply operation: 3.3V or 1.8V
• Power consumption at 1.8V AVDD supply: 8.5mW/channel (16kHz sample rate); 9.2mW/channel (48kHz sample rate)

• Microphone array systems
• Voice-activated digital assistants
• Teleconferencing systems
• Security and surveillance systems