AD7863ARZ-2REEL7

Overview

The AD7863ARZ-2REEL7 is a dual-channel, 14-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. 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 45 mW in normal mode, and a maximum power dissipation of 57.75 mW. The component supports an input voltage range of 0 V to 2.5 V and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Simultaneous sampling and conversion across two independent channels to preserve relative phase information between signals.
• Integrated track-and-hold amplifiers with tight aperture delay matching to ensure accurate signal acquisition.
• Built-in overvoltage protection on analog inputs to prevent damage during transient conditions.
• Automatic power-down mode that minimizes energy consumption between conversion cycles.

Applications

• Battery-powered or portable instrumentation requiring low power operation.
• Industrial control systems utilizing standard unipolar signal processing ranges.
• Data acquisition systems interfacing with microprocessors, microcontrollers, or digital signal processors via parallel bus.

Procurement Notes

Verify the specific suffix REEL7 indicates tape and reel packaging when sourcing components. Confirm the AD7863-2 variant matches the required 0 V to 2.5 V unipolar input range for the target application. Ensure compatibility with the 28-lead SOIC_W package dimensions during PCB layout planning.

Selection Notes

Select this component when simultaneous multi-channel sampling is required without external synchronization circuitry. The AD7863-2 variant is specifically designed for unipolar applications, whereas other variants support bipolar ranges. Consider the 5.2 μs conversion speed and 175 kSPS throughput rate against system latency requirements.

Part Context

The AD7863 series 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 multiple input range configurations to accommodate various industrial signal standards.

Replacement Considerations

The AD7862 is a compatible predecessor offering similar functionality but with lower resolution. Verify pinout compatibility if substituting directly into existing designs. Other members of the AD7863 family provide different input voltage ranges rather than direct functional replacements.