Support software
TLV320ADC3120
Stereo-channel, 768-kHz, Burr-Brown™ audio analog-to-digital converter (ADC) with 106-dB SNR
Data sheet
TLV320ADC3120
- 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): 106 dB
- THD+N: –95 dB
- ADC channel summing mode, DR performance:
- 109-dB, 2-channel summing
- ADC input voltage:
- Differential, 2-VRMS full-scale inputs
- Single-ended, 1-VRMS full-scale inputs
- ADC sample rate (fS) = 8 kHz to 768 kHz
- Programmable channel settings:
- Channel gain: 0 dB to 42 dB, 0.5-dB steps
- Digital volume control: –100 dB to 27 dB
- Gain calibration with 0.1-dB resolution
- Phase calibration with 163-ns 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:
- Format: TDM, I2S, or left-justified (LJ)
- Word length: 16 bits, 20 bits, 24 bits, or 32 bits
- Master or slave interface
- Single-supply operation: 3.3 V or 1.8 V
- I/O-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
The TLV320ADC3120 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 TLV320ADC3120 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.
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Evaluation board
ADC3120EVM-PDK — TLV320ADC3120 evaluation module for stereo-channel, 768-kHz, Burr-Brown™ audio ADC with 106-dB SNR
The ADC3120EVM-PDK is an evaluation module (EVM) that allows the user to test the capabilities of the TLV320ADC3120, which is a two-channel, high-performance, audio analog-to-digital converter (ADC). TLV320ADC3120 is intended for voice-activated systems, professional microphones, audio (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | Download |
|---|---|---|
| WQFN (RTE) | 20 | View options |
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