AD7863AR-10

Overview

The AD7863AR-10 is a dual-channel, 14-bit successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5 V supply and supports simultaneous sampling at a rate of 175 kSPS with a conversion time of 5.2 μs. The device features four analog inputs grouped into two channels, selectable via the A0 pin, with an input voltage range of ±10 V. It includes an internal 2.5 V reference, high-speed parallel interface, and overvoltage protection up to ±17 V. Typical power consumption is 70 mW in normal mode.

Feature Summary

• Simultaneous sampling and conversion of two independent channels
• Internal 2.5 V reference with external reference capability
• High-speed parallel data interface for microprocessor integration
• Automatic power-down mode for low-power applications

Applications

• Vector motor control systems
• Industrial process control
• Data acquisition systems requiring phase preservation

Procurement Notes

Verify the specific suffix 'AR' against the manufacturer's current ordering guide to confirm package type and temperature grade. Ensure the '-10' designation matches the required ±10 V input range for the application. Cross-reference the datasheet revision to confirm all electrical specifications remain unchanged.

Selection Notes

Select this component when simultaneous sampling of two channels is critical for maintaining signal phase relationships. The ±10 V input range eliminates the need for external attenuation circuits in standard industrial environments. Consider the parallel interface requirements and ensure the host system can support the 14-bit data bus width and timing constraints.

Part Context

The AD7863 serves as a 14-bit upgrade to the 12-bit AD7862 while maintaining pin compatibility. It belongs to the AD7863 family, which includes variants with different input ranges such as the AD7863-3 (±2.5 V) and AD7863-2 (0 V to 2.5 V). This specific part is designed for applications demanding high throughput and precise channel isolation.

Replacement Considerations

The AD7862 is a compatible 12-bit predecessor with pin-compatible options. For higher resolution needs, consider the AD7864 or AD7865 families. Verify that any substitute maintains the simultaneous sampling capability and parallel interface compatibility.