ADAU1772BCPZ-R7

The ADAU1772 is a codec with four inputs and two outputs that incorporates a digital processing engine to perform filtering, level control, signal level monitoring, and mixing. The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise cancelling headsets. With the addition of just a few passive components, a crystal, and an EEPROM for booting, the ADAU1772 provides a complete headset solution.

Applications

• Noise cancelling handsets, headsets, and headphones
• Bluetooth ANC handsets, headsets, and headphones
• Personal navigation devices
• Digital still and video cameras

Key features

• Programmable audio processing engine 192 kHz processing path Biquad filters, limiters, volume controls, mixing
• Low latency, 24-bit ADCs and DACs 102 dB SNR (signal through PGA and ADC with A-weighted filter) 107 dB combined SNR (signal through DAC and headphone with A-weighted filter)
• Serial port sample rates from 8 kHz to 192 kHz
• 38 μs analog-to-analog latency
• 4 single-ended analog inputs—configurable as microphone or line inputs
• Dual stereo digital microphone inputs
• Stereo analog audio output—single-ended or differential, configurable as either line output or headphone driver
• PLL supporting any input clock rate from 8 MHz to 27 MHz
• Full-duplex, asynchronous sample rate converters (ASRCs)
• Power supplies Analog and digital I/O of 1.8 V to 3.3 V
• Digital signal processing (DSP) core of 1.1 V to 1.8 V
• Low power (0.75 mW for typical noise cancelling solution)
• I2C and SPI control interfaces, self-boot from I2C EEPROM
• 7 MP pins supporting dual stereo digital microphone inputs, stereo PDM output, mute, DSP bypass, push-button volume controls, and parameter bank switching