AD73311LARSZ-REEL7

Overview

The AD73311LARSZ-REEL7 is a low-cost, low-power CMOS general-purpose analog front-end processor manufactured by Analog Devices Inc. It integrates a 16-bit A/D converter and a 16-bit D/A converter within a single package. The device supports programmable input/output sample rates up to 64 kS/s and features an on-chip reference voltage for single-supply operation. Key electrical specifications include a typical ADC signal-to-noise ratio of 75 dB and a DAC SNR of 70 dB over the voiceband. It operates on a single supply ranging from +2.7 V to +5.5 V with a maximum power consumption of 50 mW at 2.7 V.

Feature Summary

• Integrates a 16-bit ADC and a 16-bit DAC with sigma-delta modulation architecture.
• Supports flexible serial port (SPORT) allowing up to 8 devices to be connected in cascade.
• Features programmable gain amplifiers with ranges of 38 dB for the ADC and 21 dB for the DAC.
• Includes an on-chip reference voltage and low group delay characteristics suitable for active control applications.

Applications

• Speech processing and enhancement systems
• Cordless and personal communications devices
• Telephony equipment and active sound/vibration control
• General purpose analog I/O and data communications

Procurement Notes

Verify that the REEL7 suffix indicates tape-and-reel packaging rather than tube packaging when sourcing this specific part number. Confirm the 'L' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the ordering guide confirms availability for the ARSZ variant, as some older documentation may list only standard suffixes.

Selection Notes

Select this component for applications requiring high-resolution audio or telephony signal processing with minimal external components. The integrated sigma-delta modulator reduces the need for complex external anti-aliasing filters. Consider the 20-lead SOIC/SSOP package constraints and verify that the serial interface timing meets the DSP engine requirements for MCLK and SCLK signals.

Part Context

This component belongs to the AD73311 family of analog front-end processors designed for speech and telephony applications. It serves as a complete solution for converting analog voice signals to digital data and vice versa, eliminating the need for separate ADC, DAC, and filter stages in many communication system designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing serial port configurations if replacing legacy codecs in telephony hardware.