AD73322LARZ

Overview

The AD73322LARUZ 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. The device operates on a single supply voltage ranging from 2.7 V to 3.3 V, with typical power consumption of 50 mW at 3.0 V. It features an SNR of 78 dB for both ADC and DAC channels within the voice-band frequency range. The component utilizes a flexible serial port interface for DSP connectivity and includes programmable input/output gain networks. It is housed in a 28-lead TSSOP package and supports an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Dual 16-bit A/D and D/A conversion channels with 78 dB SNR
• Single-supply operation (2.7 V to 3.3 V) with 50 mW typical power consumption
• Programmable sample rates up to 64 kHz via serial port interface
• On-chip voltage reference and programmable analog/digital gain taps

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 grade suffix 'A' corresponds to the required industrial temperature range (-40°C to +85°C). Confirm that the TSSOP-28 package matches the PCB footprint design. Ensure the system power supply remains within the 2.7 V to 3.3 V operational limits specified in the datasheet.

Selection Notes

Select this component when a low-power, dual-channel audio front end is required for voice-band applications. The AD73322L offers integrated programmable gain amplifiers suitable for interfacing with subscriber line interface circuits. Consider the 25 µs group delay for real-time active control requirements. Verify compatibility with the host DSP's serial clock rates and frame sync configurations.

Part Context

The AD73322L belongs to the Analog Devices general-purpose analog front-end family designed for speech and telephony applications. It provides a cost-effective solution for converting analog signals to digital data and vice versa with high fidelity. The 'ARUZ' designation indicates the specific package type (TSSOP) and temperature grade (Industrial) within the broader AD73322L product line.

Replacement Considerations

The AD73322LYRZ is a variant offering an extended temperature range (-40°C to +105°C) while maintaining identical electrical specifications and pinout. Other members of the AD73322L series may offer different package options such as SOIC or LQFP.