ADAU1797 High-Performance Audio Codec

Product Highlights > ADAU1797 High-Performance Audio Codec

            ADAU1797 High-Performance Audio Codec
                     Analog Devices' ADAU1797 high-performance audio codec has integrated HiFi 3z and FastDSP™ cores
    

ADIs ADAU1797 is a low-power, high-performance audio codec that provides three analog input channels, ten DMIC input channels, two PDM output channels, and one high-efficiency Class-D amplifier output channel.

The device features a low-power HiFi 3z audio DSP core and a low-latency FastDSP core. The DSP cores, paired with high-fidelity audio data converters, are ideal for noise cancellation, transparency, personal sound amplification, and voice processing applications.

The DSP cores are optimized for small form factor applications such as true wireless stereo (TWS) headphones when operating in low-power mode. In this mode, the device delivers the right level of processing power while still minimizing power consumption to extend play time.

The device also has the flexibility to support applications requiring additional processing capability, such as over-ear headphones, VR and AR headsets, wearables, hearing assist, and PSAP devices. In high-performance mode, the HiFi 3z core is boosted from 50 MHz to 200 MHz, and the FastDSP supports double the number of instructions (up from 64 to 128). This increased processing capability can either offload cycles from the host processor or enable a lower-cost host processor without requiring an additional external audio DSP or MCU.

The EVAL-ADAU1797Z evaluation board provides full access to all analog and digital inputs/outputs on the ADAU1797. The EVAL-ADAU1797Z can be powered by a single 3.8 V to 5 V supply. Once the main power is supplied, onboard regulators provide the voltages needed for the ADAU1797 and other devices. The printed circuit board (PCB) is an 8-layer design, with a ground plane and power plane on the inner layers. The EVAL-ADAU1797Z contains connectors for external microphones and speakers. The master clock can be provided externally or by the onboard 24.576 MHz passive crystal or 24.576 MHz oscillator.

Features

FastDSP audio processing engine

Low latency at sample rates up to 768 kHz
Supports up to 128 instructions

Tensilica® HiFi 3z DSP with TIE accelerators

Quad MAC/cycle and 1024 kB total memory
2-way SIMD IEEE floating point multiplier
Supports both 50 MHz and 200 MHz modes

5 μs group delay (analog input to amp output)

768 kHz sample rate (FastDSP bypass mode)

Three low-power 24-bit ADC record channels

104 dB SNR, -91 dB THD+N, 0.6 mW (PGA on)
Flexible differential or single-ended inputs

Ten digital microphone (DMIC) input channels

Two clock outputs (384 kHz to 6.144 MHz)

Multi-purpose I/O pins for GPIO/IRQ support

Mono low-power 24-bit DAC playback channel

113 dB SNR, -93 dB THD+N, 1.4 mW PQ
High-efficiency, low-noise, Class-D amplifier

Two high-performance PDM output channels

Supports 3.072 MHz or 6.144 MHz clock rates

Two 32-bit I²S/TDM serial audio data ports

Sync clock frequencies from 8 kHz to 768 kHz
Two full-duplex, 4-channel ASRCs

Supports low power, single-supply mode (1.8 V)

Integrated LDO or switch-cap regulator
Digital I/O supports 1.2 V or 1.8 V logic levels

Digital control and communication interfaces

I²C/SPI control and I3C combined interfaces
Master QSPI, UART, and JTAG interfaces
Supports self-boot from QSPI Flash/EEPROM

Applications

True wireless stereo (TWS) ANC headphones
Over-ear stereo ANC headphones
VR and AR headsets and wearable devices
Hearing assist and PSAP devices
Soundbar and smart speaker systems
Gaming devices and tablets

Resources

ADAU1797 High-Performance Audio Codec

	Image	Manufacturer Part Number	Description	Available Quantity	Price	View Details
		ADAU1797ABCBZRL7	3 ADC, 1 DAC, LOW PWR CODEC, AUD	0 - Immediate	See Page for Pricing	View Details
		ADAU1797ABCBZRL	3 ADC, 1 DAC, LOW PWR CODEC, AUD	0 - Immediate	See Page for Pricing	View Details