AD73322LAR-REEL

Overview

The AD73322LAR-REEL is a dual-channel analog front-end processor manufactured by Analog Devices Inc. It integrates two 16-bit ADCs and two 16-bit DACs, supporting a maximum sample rate of 64 kHz with a typical power consumption of 50 mW at 3.0 V. The device operates on a single supply voltage ranging from 2.7 V to 3.3 V and features an internal reference voltage. Key performance metrics include a signal-to-noise ratio of 78 dB for both conversion channels and -90 dB crosstalk isolation. It utilizes a flexible serial port interface for DSP connectivity and is housed in a 28-lead TSSOP package.

Feature Summary

• Dual 16-bit A/D and D/A converters with 78 dB SNR
• Single-supply operation (2.7 V to 3.3 V) with 50 mW typical power consumption
• Programmable input/output gain and sample rates up to 64 kHz
• Flexible serial port supporting cascade connections for up to 8 I/O channels

Applications

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

Procurement Notes

Verify the specific grade (A or Y) required for the target operating temperature range, as the datasheet defines Industrial (A) for −40°C to +85°C and Extended (Y) for −40°C to +105°C. Confirm that the REEL suffix corresponds to the tape-and-reel packaging format intended for automated assembly processes. Ensure compatibility with the 28-lead TSSOP footprint during PCB layout.

Selection Notes

Select this component when a low-power, general-purpose dual codec is needed for voice-band signals. The AD73322L provides integrated programmable gain amplifiers and digital gain taps suitable for impedance matching with subscriber line interface circuits. Consider the 25 µs group delay for active control applications requiring low latency. Verify that the 2.7 V to 3.3 V supply range aligns with the system's power architecture.

Part Context

The AD73322L belongs to Analog Devices' family of low-cost, low-power CMOS analog front-end processors. This specific part number variant indicates the 28-lead Thin Shrink Small Outline Package (TSSOP) configuration. The device is designed to replace discrete solutions in speech and telephony applications, offering integrated sigma-delta modulation and filtering capabilities within a compact form factor.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.