AD7863ARSZ-3REEL7

Overview

The AD7863ARSZ-3REEL7 is a dual 14-bit successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5 V supply and features two simultaneous sampling channels with four input pins. The device provides a high-speed parallel interface and includes an internal 2.5 V reference. Key electrical parameters include a conversion time of 5.2 μs, a typical power consumption of 70 mW in normal mode, and a maximum power dissipation of 84 mW for the AD7863-3 variant. It supports an analog input range of ±2.5 V and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Simultaneous sampling and conversion of two independent channels to preserve relative phase information.
• Integrated track-and-hold amplifiers with tight aperture delay matching between channels.
• Internal 2.5 V voltage reference with provision for external reference connection.
• High-speed parallel data interface compatible with standard microprocessors and DSPs.

Applications

• Vector motor control systems requiring precise phase measurement.
• Portable instrumentation powered by battery supplies.
• Industrial signal processing applications utilizing standard ±2.5 V ranges.

Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel configuration. Confirm the analog input range specification corresponds to the '-3' designation for ±2.5 V operation. Ensure compatibility with the host system's parallel bus timing requirements before finalizing procurement.

Selection Notes

Select this component when simultaneous sampling of two channels is critical for maintaining signal phase relationships. The AD7863-3 variant is appropriate for signals centered around ground with a ±2.5 V swing. Consider the 5.2 μs conversion time and 175 kSPS throughput rate against system latency requirements.

Part Context

This part belongs to the AD7863 family, which serves as a 14-bit upgrade to the AD7862. The 'A' version denotes the commercial temperature range (-40°C to +85°C). The 'RZ' indicates a lead-free RoHS-compliant SOIC-W package, while 'REEL7' specifies the tape and reel packaging format.

Replacement Considerations

The AD7862 is a previous generation device with similar functionality but lower performance specifications. Direct pin-compatible replacements within the same family include other variants of the AD7863 series with different input ranges or temperature grades.