AD7820LRZ

Overview

The AD7820LRZ is an 8-bit CMOS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes a flash architecture and features a single-ended input type with one channel. The device employs a parallel interface for data transfer and requires an external reference voltage of 4.75 V. It operates on dual 5 V supplies for both analog and digital sections, with a maximum power dissipation of 40 mW. The component is housed in a 20-pin SOIC package designed for surface mount installation. It supports a minimum operating temperature of -40°C and a maximum of +85°C.

Feature Summary

• Flash architecture enables high-speed conversion within the 8-bit resolution class.
• Single-ended input configuration simplifies signal interfacing requirements.
• Parallel interface provides direct connectivity to standard digital logic systems.

Applications

• Industrial process control systems requiring fast 8-bit digitization
• Data acquisition modules utilizing parallel bus architectures
• Test and measurement equipment needing low-power ADC solutions

Procurement Notes

Verify current availability status as supply may be limited or discontinued. Confirm RoHS compliance details through official documentation before integration. Ensure ordering suffix matches required package variant. Check for obsolescence notices from Analog Devices to mitigate long-term sourcing risks.

Selection Notes

Select this part when a parallel interface is mandatory rather than serial alternatives like SPI. Choose the LRZ suffix specifically for the SOIC-20 surface-mount package requirement. Verify that the 5V supply constraint aligns with system power rails. Consider the 40mW power dissipation limit for thermal management design.

Part Context

This component belongs to the AD7820 series of 8-bit ADCs. It shares core specifications with variants such as the AD7820KPZ (PLCC package) and AD7820LNZ (PDIP package). All variants maintain identical electrical performance while differing only in physical packaging and mounting style.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Evaluate pin-compatible alternatives only if officially documented by the manufacturer.