AD7863ARS-3REEL

Overview

The AD7863ARS-3REEL is a dual-channel, 14-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. 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. It supports four analog inputs grouped into two channels with selectable input ranges: ±10 V, ±2.5 V, or 0 V to 2.5 V. The component is housed in a 28-lead SSOP package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Simultaneous sampling and conversion on two independent channels preserves relative phase information between signals.
• Integrated internal 2.5 V voltage reference eliminates the need for external components in standard applications.
• Automatic power-down mode significantly reduces power consumption during idle periods between conversions.
• Analog inputs feature overvoltage protection to withstand voltages exceeding the selected input range limits.

Applications

• Vector motor control systems requiring precise phase measurement
• Portable instrumentation powered by battery supplies
• Industrial data acquisition systems utilizing standard signal ranges

Procurement Notes

Verify that the specific suffix matches the required input voltage range configuration. Confirm the package type corresponds to the SSOP variant. Ensure the ordering code aligns with the intended operating temperature specifications before finalizing procurement.

Selection Notes

Select this component when simultaneous multi-channel sampling is required without inter-channel skew. Compare against the AD7863-10 or AD7863-2 variants if different input voltage ranges are necessary. Evaluate the parallel interface requirements against available microprocessor or DSP resources.

Part Context

This part belongs to the AD7863 family of dual 14-bit ADCs. It serves as a lead-compatible upgrade to the AD7862 model. The series offers variations based on input voltage ranges and packaging styles, providing flexibility for different system integration needs.

Replacement Considerations

The AD7862 is a compatible predecessor offering similar functionality. Verify pin compatibility and ensure the replacement meets the specific input voltage range requirements of the target application.