Three ADCs, One DAC, Low Power Codec with Audio/FastDSP

The ADAU1850 is a codec with three inputs and one output that incorporates one digital signal processor. The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise canceling earphones. With the addition of a few passive components, the ADAU1850 provides a complete headset solution.

The ADAU1850 is provided in a small, 28-ball, 2.957 mm × 1.757 mm wafer level chip scale package (WLCSP).

APPLICATIONS

* Noise canceling handsets, headsets, and headphones

* Bluetooth active noise canceling (ANC) handsets, headsets, and headphones

* Personal navigation devices

* Digital still and video cameras

* Musical instrument effect processors

* Multimedia speaker systems

* Smartphones

* Programmable FastDSP audio processing engine

* Up to 768 kHz sample rate

* Biquad filters, limiters, volume controls, mixing

* Low latency, 24-bit ADCs and DAC

* 106 dB SNR (signal through ADC with A-weighted filter)

* 110 dB combined SNR (signal through DAC and headphone with A-weighted filter)

* Serial port sample rates from 8 kHz to 768 kHz

* 5 μs analog-to-analog group delay

* Programmable, double precision MAC engine for 13-stage equalizer

* 3 analog inputs (2 differential and 1 single-ended), configurable as microphone or line inputs

* Analog differential audio output, configurable as either line output or headphone driver