AD73311ARZ-REEL

Overview

The AD73311ARZ-REEL is a low-cost, low-power CMOS general-purpose analog front-end processor manufactured by Analog Devices. It integrates a 16-bit A/D conversion channel and a 16-bit D/A conversion channel within a single package. The device supports a maximum sample rate of 64 kS/s and operates on a single supply voltage ranging from +2.7 V to +5.5 V. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 75 dB for the ADC and 70 dB for the DAC over the voiceband frequency range. It features programmable input/output gain, an on-chip reference voltage, and a flexible serial port interface suitable for cascading multiple devices.

Feature Summary

• 16-Bit Resolution: Features both a 16-bit ADC and a 16-bit DAC for high-fidelity signal processing.
• High SNR Performance: Delivers 75 dB ADC SNR and 70 dB DAC SNR within the 300 Hz to 3.4 kHz voiceband.
• Programmable Gain: Input PGA offers up to 38 dB gain range; Output PGA provides up to 21 dB gain range.
• Low Power Consumption: Maximum power consumption is 50 mW at 2.7 V supply voltage.

Applications

• Speech Processing
• Telephony Systems
• Cordless and Personal Communications
• Active Control of Sound and Vibration

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the 'A' grade designation ensures operation within the specified industrial temperature range of -40°C to +85°C. Check current availability status as older component lines may have limited stock or end-of-life notifications.

Selection Notes

Select this component for applications requiring integrated analog front-end processing with minimal external filtering due to sigma-delta modulation. Ensure the system clock (MCLK) can provide the necessary frequency division for the desired 64 kS/s sample rate. Verify that the serial port timing requirements align with the host DSP or microcontroller capabilities.

Part Context

The AD73311ARZ-REEL belongs to the AD73311 family of analog front-end processors. The 'ARZ' designation specifies the 20-lead SOIC package option with lead-free composition. The '-REEL' suffix denotes the specific shipping configuration in a tape and reel format, distinct from the tube-packaged variants like AD73311AR.

Replacement Considerations

Direct pin-compatible replacements are not explicitly listed in the provided documentation. Evaluate other members of the AD73311 family, such as the SSOP variant (AD73311ARS), if package footprint changes are permissible. Cross-reference with newer generation audio codecs if lower power or higher resolution is required.