AD7864ASZ-1REEL

Overview

The AD7864ASZ-1REEL is a high-speed, low-power, 4-channel simultaneous sampling analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a 12-bit resolution and operates from a single 5 V supply. The device incorporates four track-and-hold amplifiers that sample inputs simultaneously to preserve relative phase information. It supports input voltage ranges of ±10 V or ±5 V. The ADC utilizes a successive approximation architecture with an internal clock oscillator and a high-speed parallel interface compatible with 3 V processors. Typical power consumption is 90 mW in normal mode.

Feature Summary

• Four independent track-and-hold amplifiers enable simultaneous sampling across all channels.
• Hardware or software selectable channel sequence allows conversion of any subset of the four channels.
• Integrated overvoltage protection on analog inputs prevents damage during signal excursions.
• Dedicated standby mode significantly reduces power consumption for portable applications.

Applications

• AC motor control systems
• Uninterrupted power supplies
• Data acquisition systems

Procurement Notes

Verify the specific suffix '1REEL' against official documentation to confirm it denotes the reel packaging variant of the AD7864ASZ-1. Ensure the input range specification matches the -1 version requirements. Confirm RoHS compliance status as indicated in the current datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when simultaneous multi-channel sampling is required to maintain phase coherence. The AD7864ASZ-1 is appropriate for bipolar input signals within ±10 V or ±5 V ranges. Consider the parallel interface complexity and ensure the host processor can handle the timing constraints for read-during-conversion operations at maximum throughput rates.

Part Context

The AD7864 series includes variants with different input ranges: AD7864-1 for ±10 V/±5 V, AD7864-2 for unipolar ranges, and AD7864-3 for ±2.5 V. The ASZ package indicates a lead-free MQFP form factor. The REEL suffix typically signifies tape-and-reel packaging suitable for automated surface-mount assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other 4-channel simultaneous sampling ADCs if necessary, ensuring compatibility with the 5 V supply and parallel interface requirements.