AD7820KR-REEL

Overview

The AD7820KR-REEL is an 8-bit CMOS analog-to-digital converter (ADC) from Analog Devices, packaged in a 20-pin SOIC. It utilizes a half-flash conversion technique to achieve high-speed performance with a sampling time of 2 microseconds. The device operates on a single 5 V supply for both analog and digital sections, consuming 40 mW of power. It features a parallel interface and accepts single-ended inputs. An external reference voltage of 4.75 V is required. The component supports an operating temperature range from -40°C to +85°C.

Feature Summary

• High-speed 8-bit resolution using half-flash architecture
• Microprocessor-compatible parallel data interface
• Single 5 V power supply operation
• Integrated track-and-hold function

Applications

• Data acquisition systems requiring fast conversion rates
• Industrial process control monitoring
• Instrumentation and test equipment
• Communication signal processing

Procurement Notes

Verify current availability status as the part may be discontinued or restricted. Confirm that the REEL suffix indicates tape-and-reel packaging suitable for automated assembly. Ensure compatibility with existing 5 V logic levels and external reference requirements before finalizing procurement plans.

Selection Notes

Select this component when an 8-bit resolution and 2 microsecond sampling speed are sufficient for the application. Consider the parallel interface requirement and the need for an external voltage reference. Evaluate the SOIC-20 package constraints against PCB layout space and thermal dissipation needs within the specified industrial temperature range.

Part Context

This part belongs to the AD7820 series of high-speed ADCs. It shares architectural similarities with other members like the AD7820LRZ but differs in packaging and reel configuration. The series is characterized by its use of half-flash technology to balance speed and complexity, targeting applications where moderate resolution meets high throughput requirements.

Replacement Considerations

Publicly confirmed substitutes include the AD7820LRZ for equivalent functionality in different packaging. Verify pinout compatibility and electrical specifications before substitution.