AD7863ARS-3REEL7

Overview

The AD7863ARS-3REEL7 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 capabilities for two channels with four total input lines. The device includes an internal 2.5 V reference and a high-speed parallel interface. Key electrical specifications include a maximum conversion time of 5.2 μs, a typical power consumption of 70 mW in normal mode, and a maximum power dissipation of 84 mW. The component supports an analog input range of ±2.5 V and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Simultaneous sampling and conversion of two independent channels using track-and-hold amplifiers.
• Integrated internal 2.5 V voltage reference with provision for external reference connection.
• 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 information.
• Battery-powered or portable instrumentation due to low power operation.
• Industrial signal processing applications utilizing the ±2.5 V input range.

Procurement Notes

Verify the specific suffix 'REEL7' against manufacturer documentation to confirm tape and reel packaging requirements. Ensure the ordering code matches the exact input voltage range variant required for the application. Cross-reference the datasheet revision history to confirm current manufacturing status and any potential specification updates prior to final procurement.

Selection Notes

Select this component when simultaneous channel sampling is critical for preserving relative phase data. Compare the 175 kSPS throughput rate against system bandwidth requirements. Evaluate the 14-bit resolution against noise floor needs. Consider the parallel interface complexity versus serial alternatives if pin count is constrained.

Part Context

The AD7863 serves as a 14-bit lead-compatible upgrade to the AD7862. 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, providing flexibility for surface-mount assembly designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the verified source material. Consult official Analog Devices documentation for cross-reference lists or updated product line replacements.