AD7863AR-10REEL7

Overview

The AD7863AR-10REEL7 is a dual-channel, 14-bit analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5 V supply and provides simultaneous sampling and conversion at a throughput rate of 175 kSPS. The device features two successive approximation ADCs with a conversion time of 5.2 μs and an acquisition time of 0.5 μs. It supports four analog input channels grouped into two selectable pairs via the A0 pin, accommodating an input range of ±10 V for the -10 variant. Key specifications include a typical Signal-to-(Noise + Distortion) Ratio of 78 dB, total harmonic distortion of -82 dB, and low power consumption of 70 mW in normal mode.

Feature Summary

• Simultaneous sampling and conversion across two independent channels to preserve relative phase information.
• Integrated internal 2.5 V reference voltage source with external reference capability.
• High-speed parallel data interface compatible with standard microprocessor control signals.
• Automatic power-down mode that minimizes energy consumption between conversion cycles.

Applications

• Vector motor control systems requiring precise phase tracking.
• Industrial process control applications utilizing standard ±10 V signal ranges.
• Portable instrumentation powered by battery supplies due to low power characteristics.

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape-and-reel packaging when sourcing components. Confirm the '-10' designation matches the required ±10 V input voltage range for your application. Ensure the operating temperature range of -40°C to +85°C aligns with your environmental constraints before finalizing procurement.

Selection Notes

Select this component if simultaneous channel sampling is critical for maintaining signal phase relationships. Compare the 175 kSPS throughput against system requirements. Consider the ±10 V input range specifically offered by the -10 variant over other versions like the -3 or -2. Evaluate the parallel interface complexity against available microprocessor resources.

Part Context

The AD7863 serves as a 14-bit upgrade to the earlier AD7862 model while maintaining pin compatibility. It belongs to the AD7863 series of dual ADCs designed for high-speed data acquisition. The device utilizes Linear Compatible CMOS (LC2MOS) technology to combine precision bipolar circuits with low-power CMOS logic.

Replacement Considerations

The AD7862 is a documented predecessor offering similar functionality with lower resolution. Verify pinout compatibility if substituting directly. No other direct equivalent part numbers are confirmed in the provided documentation.