AD7892AR-2REEL

Overview

The AD7892AR-2REEL is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. It operates from a single +5 V supply and achieves a throughput rate of 500 kSPS with a conversion time of 1.6 µs. The device features an on-chip track/hold amplifier, an internal +2.5 V reference, and versatile interface structures supporting both parallel and serial connections to microprocessors. It accepts a unipolar analog input range of 0 V to +2.5 V and includes overvoltage protection. The component is housed in a 24-lead SOIC package.

Feature Summary

• Integrated signal scaling for direct handling of 0 V to +2.5 V analog inputs without external attenuation circuitry
• Flexible data output formats allowing selection between high-speed parallel bus access and three-wire serial connection
• On-chip track/hold amplifier ensures accurate sampling at maximum throughput rates with minimal acquisition delay

Applications

• Portable instrumentation requiring low power consumption and single-supply operation
• Industrial control systems utilizing microcontrollers or DSPs via serial interfaces
• Data acquisition modules interfacing directly with standard logic families

Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging when sourcing components. Confirm that the -2 designation corresponds to the 0 V to +2.5 V input range variant. Ensure compatibility with existing board layouts for the 24-lead SOIC footprint before finalizing procurement orders.

Selection Notes

Select this model specifically for applications requiring a unipolar 0 V to +2.5 V input range. Choose the parallel interface mode for high-speed microprocessor integration or the serial mode for space-constrained designs. Verify that the 500 kSPS throughput meets system bandwidth requirements compared to the faster AD7892-3 variant.

Part Context

This component belongs to the AD7892 family of high-speed, low-power ADCs. It shares the core SAR architecture and interface logic with variants offering different input ranges and throughput speeds. The AR suffix denotes the SOIC package option within the broader product line.

Replacement Considerations

AD7892BRZ-2REEL offers improved relative accuracy specifications while maintaining identical electrical performance and pinout compatibility.