Texas Instruments TLV320ADC5120 768kHz Burr-Brown™ Audio ADC
Texas Instruments TLV320ADC5120 768kHz Burr-Brown™ Audio ADC offers a simultaneous sampling of up to two analog channels or four digital channels for the pulse density modulation (PDM) microphone input. The TLV320ADC5120 features differential line and microphone inputs with a 2VRMS full-scale signal. The TLV320ADC5120 provides a 120dB dynamic range enhancer. The ADC supports line and microphone inputs while allowing for both single-ended and differential input configurations.
The TI TLV320ADC5120 768kHz Burr-Brown Audio ADC 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 768kHz. The ADCs support time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, selectable with the hardware pin level.
These integrated high-performance features, combined with the ability to be powered from a single supply of 3.3V or 1.8V, enable the device to be used in cost-sensitive, space-constrained audio systems in far-field microphone recording applications.
The TLV320ADC5120 ADCs are available in a 20-pin WQFN package and are specified from –40°C to +125°C.
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):
- 120dB, dynamic range enhancer (DRE) enabled
- 108dB, DRE disabled
- –95dB THD+N
- Dynamic range (DR):
- ADC channel summing mode, DR performance:
- 111dB, DRE disabled, 2-channel summing
- ADC input voltage:
- Differential, 2VRMS full-scale inputs
- Single-ended, 1VRMS full-scale inputs
- ADC sample rate (fS) = 8kHz to 768kHz
- Programmable channel settings:
- 0dB to 42dB, 0.5dB Steps channel gain
- –100dB to 27dB Digital volume control
- Gain calibration with 0.1dB resolution
- Phase calibration with 163ns 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:
- TDM, I2S, or left-justified (LJ) Format
- 16-bits, 20-bits, 24-bits, or 32-bits Word length
- Master or slave interface
- 3.3V or 1.8V Single-supply operation
- 3.3V or 1.8V I/O-supply operation
- Power consumption for 1.8V AVDD supply of 9.5mW/channel at 48kHz sample rate
Applications
- Smart speakers
- IP network cameras
- Professional microphones and wireless systems
- Video conference systems
Associated Products
Texas Instruments ADC5120EVM-PDK Audio ADC Evaluation Module
Tests the capabilities of the TLV320ADC5120, a two-channel, high-performance, audio ADC.
Simplified Block Diagram
