AD73311LARSZ-REEL

Overview

The AD73311LARSZ-REEL 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. It operates on a single supply ranging from +2.7 V to +5.5 V with maximum power consumption of 50 mW at 2.7 V. The component utilizes a flexible serial port interface allowing cascading of up to eight devices.

Feature Summary

• Integrates 16-bit ADC and DAC channels with 75 dB ADC SNR and 70 dB DAC SNR over voiceband bandwidth.
• Features a programmable gain amplifier (PGA) with input gain ranges of 0/38 dB and output gain ranges of 0/6 dB.
• Includes an on-chip reference voltage generator requiring only a 0.1 µF bypass capacitor.
• Supports flexible serial port interfacing compatible with industry-standard DSP engines.

Applications

• Speech processing and enhancement systems
• Cordless and personal communications equipment
• Telephony applications including low bit rate compression
• Active control of sound and vibration

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing this specific variant. Confirm the 'L' designation in the part number against official documentation to ensure correct temperature range and package option alignment. Check for EOL status as older Analog Devices codecs may have discontinuation notices. Validate RoHS compliance details through current manufacturer declarations.

Selection Notes

Select this component for applications requiring integrated analog signal conditioning with minimal external components. Ensure the system clock frequency supports the required 64 kS/s maximum sample rate via the MCLK input. Verify that the serial interface timing parameters align with the host DSP or microcontroller capabilities. Consider the group delay characteristics if real-time active control loops are involved.

Part Context

The AD73311 belongs to Analog Devices' family of general-purpose analog front-end processors designed for speech and telephony. It replaces discrete solutions involving separate amplifiers, filters, and converters. The device simplifies board design by integrating sigma-delta modulation, digital filtering, and PGA stages into a 20-lead SOIC or SSOP package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Evaluate pin-compatible alternatives from the same manufacturer series if availability is constrained.