AD7892AR-3REEL7

Overview

The AD7892AR-3REEL7 is a high-speed, low-power 12-bit successive approximation analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. It operates from a single +5 V supply and features an on-chip track/hold amplifier with a conversion time of 1.47 µs and an acquisition time of 200 ns, enabling a throughput rate of up to 600 kSPS. The device includes an internal +2.5 V reference and supports both serial and parallel interfaces for microprocessor connection. It accepts a bipolar analog input range of ±2.5 V and provides overvoltage protection on the analog inputs.

Feature Summary

• Integrated signal scaling, track/hold, reference, and ADC functions on a single chip
• Flexible interface architecture supporting both high-speed serial and parallel modes
• On-chip +2.5 V voltage reference with external reference capability
• Overvoltage protection on analog inputs for robust operation

Applications

• Portable instrumentation systems requiring low power consumption
• Industrial data acquisition systems interfacing with microcontrollers
• Digital signal processing front-ends for audio or vibration monitoring

Procurement Notes

Verify the specific suffix 'R' indicates the SOIC-24 package and '3' denotes the ±2.5 V input range variant. Confirm that the REEL7 designation corresponds to tape-and-reel packaging as specified in the manufacturer's ordering guide. Ensure compatibility with the required temperature range of -40°C to +85°C for the A-version component.

Selection Notes

Select this component when a 12-bit resolution and 600 kSPS sampling rate are required within a single-supply +5 V system. Choose the AD7892AR-3 variant specifically for applications involving bipolar signals within the ±2.5 V range. Consider the integrated reference and track/hold amplifier if board space and external component count need to be minimized compared to discrete solutions.

Part Context

The AD7892 belongs to Analog Devices' family of fast, low-power SAR ADCs designed for single-supply operation. It utilizes LC2MOS technology to combine precision bipolar circuits with low-power CMOS logic. This specific model represents the commercial grade version packaged in a 24-lead SOIC, offering a balance of performance and cost for general-purpose data acquisition tasks.

Replacement Considerations

Publicly confirmed substitute part numbers for the AD7892AR-3REEL7 are not available in the provided documentation.