AD73322LYRU

Overview

The AD73322LYRU is a dual-channel analog front-end processor from Analog Devices, featuring two 16-bit ADCs and two 16-bit DACs. It operates on a single 2.7 V to 3.3 V supply with typical power consumption of 50 mW at 3.0 V. The device supports programmable sample rates up to 64 kHz and delivers 78 dB SNR for both ADC and DAC channels. It includes an on-chip reference, programmable gain amplifiers, and a flexible serial port (SPORT) supporting cascaded configurations. The Y-grade variant ensures reliable operation across an extended temperature range of −40°C to +105°C.

Feature Summary

• Dual 16-bit ADC and DAC channels with 78 dB SNR
• Extended industrial temperature range: −40°C to +105°C
• Single-supply operation (2.7 V to 3.3 V) with 50 mW typical power
• On-chip voltage reference and programmable input/output gain

Applications

• Speech processing and telephony systems
• Cordless and personal communications devices
• Active control of sound and vibration
• Data communications and wireless local loop

Procurement Notes

Verify the specific ordering suffix 'YRU' against the manufacturer's current datasheet to confirm package type and grade availability. The 'Y' indicates the extended temperature range, while 'RU' typically denotes the TSSOP-28 package in tube packaging. Confirm end-of-life status or obsolescence notices directly with Analog Devices or authorized distributors before procurement planning.

Selection Notes

Select the AD73322LYRU when extended temperature operation up to +105°C is required. Ensure the system design accommodates the 2.7 V to 3.3 V single-supply constraint. Verify that the serial interface timing matches the DSP engine capabilities, as the SPORT transfer rate is programmable. Consider the 25 µs group delay per ADC channel for real-time active control applications.

Part Context

The AD73322L series serves as a general-purpose analog front-end for speech and telephony applications. The AD73322LYRU represents the Y-grade version of this family, distinguished by its extended operating temperature range compared to the standard A-grade variant. It integrates signal conditioning, conversion, and digital gain stages into a compact solution for voice-band processing.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices for current equivalent recommendations or verify if the A-grade AD73322LARUZ meets thermal requirements if the extended range is not critical.