AD7863AR-10REEL

Overview

The AD7863AR-10REEL is a dual 14-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, operating on a single 5 V supply. It features two simultaneous sampling channels with four single-ended inputs and a high-speed parallel interface. The device supports a maximum sampling rate of 175 kSPS with a conversion time of 5.2 μs. It includes an internal 2.5 V reference and overvoltage protection allowing inputs up to ±17 V. The part operates within a temperature range of -40°C to +85°C and consumes 70 mW typical power in normal mode.

Feature Summary

• Simultaneous sampling and conversion of two independent channels preserves relative phase information between input signals.
• Integrated track-and-hold amplifiers acquire input signals to full 14-bit accuracy within 500 ns.
• Built-in overvoltage protection safeguards the analog inputs against damage from excessive voltage levels.
• Automatic power-down mode significantly reduces power consumption during idle periods between conversions.

Applications

• Vector motor control systems requiring precise phase data
• Battery-powered or portable instrumentation applications
• Industrial signal processing utilizing standard ±10 V ranges

Procurement Notes

Verify the specific ordering suffix REEL indicates reel packaging rather than tube packaging when sourcing this component. Confirm that the AD7863-10 designation matches the required ±10 V input range for your application. Ensure compatibility with existing PCB footprints for the SOIC-28 package before finalizing procurement orders.

Selection Notes

Select the AD7863AR-10REEL when simultaneous channel sampling is critical for maintaining signal phase relationships. This model is appropriate for designs requiring a ±10 V input range without external attenuation circuitry. Consider the 175 kSPS throughput limit and parallel interface requirements when integrating with microprocessors or DSPs.

Part Context

The AD7863 serves as a 14-bit upgrade to the 12-bit AD7862 while maintaining pin compatibility. It utilizes Linear Compatible CMOS (LC2MOS) technology to combine precision bipolar circuits with low-power CMOS logic. The device is available in 28-lead SOIC_W and SSOP packages, offering flexibility for various board layout constraints.

Replacement Considerations

The AD7862 is a compatible 12-bit predecessor with identical pinout but lower resolution. Verify if the increased dynamic performance and 14-bit accuracy of the AD7863 are necessary for the specific application requirements before substituting.