AD73322LYR

Overview

The AD73322LYR is a dual-channel analog front-end processor 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, derived from a 16.384 MHz master clock. Key performance metrics include 78 dB SNR for both ADC and DAC channels, -90 dB crosstalk, and low group delay (25 µs per ADC channel). It includes an on-chip voltage reference and flexible serial port interface for DSP integration.

Feature Summary

• Dual 16-bit ADC and DAC channels with 78 dB SNR
• Programmable input/output gain and sample rates (8/16/32/64 kHz)
• Single-supply operation (2.7 V to 3.3 V) with on-chip reference
• Flexible SPORT interface supporting cascade connections

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 'Y' suffix indicates the extended temperature range (-40°C to +105°C) compared to the standard 'A' grade. Confirm package type corresponds to the 'R' suffix (SOIC-28). Check current availability status as this component may be subject to discontinuation or limited stock depending on the distributor.

Selection Notes

Select the AD73322LYRZ for the SOIC-28 package variant. Ensure the system requires dual-channel 16-bit conversion within voice-band frequencies. Verify that the required sample rate aligns with the available dividers from the 16.384 MHz MCLK. Consider the 50 mW power consumption if battery life is a critical constraint.

Part Context

The AD73322L series serves as a general-purpose analog front end for speech and telephony applications. The Y-grade version extends the operating temperature range to +105°C, suitable for industrial environments. It integrates programmable gain amplifiers and digital gain taps for impedance matching and signal scaling.

Replacement Considerations

The AD73322LARUZ is a pin-compatible alternative in the TSSOP-28 package with a restricted supply status. The AD73322AR is an obsolete SOIC-28 variant. Verify functional equivalence regarding package dimensions and thermal characteristics when substituting.