AD7863ARSZ-2REEL

Overview

The AD7863ARSZ-2REEL is a dual-channel, 14-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It operates from a single 5 V supply and features simultaneous sampling and conversion at a throughput rate of 175 kSPS. The device includes two track-and-hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface. Designed for the unipolar 0 V to 2.5 V input range, it offers overvoltage protection up to +7 V. Key electrical specifications include a typical power dissipation of 45 mW in normal mode and a maximum of 105 μW in power-down mode. The component is housed in a 28-lead SSOP package.

Feature Summary

• Simultaneous sampling and conversion on two channels with matched aperture delay to preserve relative phase information.
• Integrated internal 2.5 V voltage reference with provision for external reference connection.
• Automatic power-down mode that minimizes energy consumption between conversion cycles.
• High-speed parallel data bus interface compatible with standard microprocessors and DSPs.

Applications

• Battery-powered or portable instrumentation requiring low power consumption.
• Industrial control systems utilizing standard unipolar signal ranges.
• Data acquisition systems requiring precise phase relationship preservation between signals.

Procurement Notes

Verify the specific suffix 'REEL' against official documentation to confirm tape-and-reel packaging versus tube delivery. Ensure the '-2' designation matches the required 0 V to 2.5 V unipolar input range for your application. Cross-reference the manufacturing date code and RoHS compliance status with current distributor listings to ensure material consistency.

Selection Notes

Select this variant specifically when a 0 V to 2.5 V unipolar input range is required. For bipolar ±10 V applications, use the AD7863-10 version; for ±2.5 V bipolar inputs, use the AD7863-3 version. Confirm that the system requires a parallel interface rather than serial communication. Verify that the 175 kSPS throughput meets the bandwidth requirements of the target signals.

Part Context

This component belongs to the AD7863 family of dual 14-bit ADCs, serving as a lead-compatible upgrade to the AD7862. The family provides simultaneous sampling capabilities essential for vector motor control and multi-phase signal processing. The AD7863 utilizes Linear Compatible CMOS (LC2MOS) technology to combine precision bipolar circuits with low-power CMOS logic.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.