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Texas Instruments TLV320ADC6120 768kHz Burr-Brown™ Audio ADC

Texas Instruments TLV320ADC6120 768kHz Burr-Brown™ Audio ADC offers high-performance and simultaneous sampling of up to two analog channels or four digital channels for the pulse density modulation (PDM) microphone input. Supporting both line and microphone inputs, the ADC allows for both single-ended and differential input configurations.

The TI TLV320ADC6120 768kHz Burr-Brown Audio ADC combines programmable channel gain, digital volume control, a programmable microphone bias voltage, a phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, and low-latency filter modes. All while enabling sample rates up to 768kHz. The device features time-division multiplexing (TDM), I²S, or left-justified (LJ) audio formats and enables control with the I²C interface.

These integrated high-performance features, and 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 TLV320ADC6120 is housed in a 20-pin WQFN package and has an operating temperature range of –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):
  - 123dB, dynamic range enhancer (DRE) enabled
  - 113dB, DRE disabled
- –95dB THD+N
ADC channel summing mode, DR performance of 116dB, DRE disabled, 2-channel summing
ADC input voltage:
- Differential, 2V_RMS full-scale inputs
- Single-ended, 1V_RMS full-scale inputs
ADC sample rate (f_S) = 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

Texas Instruments TLV320ADC6120 768kHz Burr-Brown™ Audio ADC

Features

Applications

Simplified Block Diagram

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