AD7863ARSZ-3REEL

Overview

The AD7863ARSZ-3REEL is a dual-channel, 14-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from a single 5 V supply and supports simultaneous sampling at a rate of 175 kSPS with a conversion time of 5.2 μs. The device features four single-ended analog inputs grouped into two channels, selectable via the A0 pin. It includes an internal 2.5 V reference and offers ±2.5 V input range compatibility. The component utilizes a high-speed parallel interface and is housed in a 28-lead SSOP package.

Feature Summary

• Simultaneous sampling and conversion for two independent channels to preserve relative phase information
• Integrated 2.5 V internal voltage reference with external reference capability
• Automatic power-down mode for reduced energy consumption during idle periods
• High-speed parallel data interface compatible with standard microprocessor control signals

Applications

• Vector motor control systems requiring precise phase tracking
• Portable instrumentation benefiting from low-power operation
• Industrial signal processing applications utilizing standard voltage ranges
• Data acquisition systems interfacing with digital signal processors

Procurement Notes

Verify that the specific ordering suffix corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the -3 variant matches the intended ±2.5 V input range specification for the target application circuit design.

Selection Notes

Select this component when simultaneous multi-channel sampling is required without aperture delay mismatch between channels. Ensure the system architecture supports a parallel data bus interface and provides a stable 5 V supply rail. Consider the thermal characteristics of the SSOP package if operating near maximum temperature limits.

Part Context

This part belongs to the AD7863 family of dual 14-bit ADCs, serving as a lead-compatible upgrade to the AD7862. The series distinguishes itself through integrated track-and-hold amplifiers and a laser-trimmed internal clock oscillator, eliminating the need for external timing components.

Replacement Considerations

The AD7863ARZ-3 serves as a tube-packaged equivalent within the same product family. Verify pinout compatibility and electrical specifications before substituting different packaging types.