AD7865YS-2

Overview

The AD7865YS-2 is a four-channel, simultaneous sampling, fast, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices. It operates from a single +5 V supply and features a successive approximation architecture with a conversion time of 2.4 µs per channel. The device includes four track/hold amplifiers, an internal 2.5 V reference, and an on-chip clock oscillator. It supports unipolar input ranges of 0 V to 2.5 V or 0 V to 5 V. The part is housed in a 44-lead Plastic Lead Quad Flatpack (PQFP) package and is rated for an operating temperature range of –40°C to +105°C.

Feature Summary

• Four simultaneously sampled inputs preserve relative phase information across channels.
• Hardware or software selectable channel sequence allows conversion of any subset of the four channels.
• High-speed parallel interface facilitates connection to microprocessors and DSPs.
• Analog inputs feature overvoltage protection to prevent damage during fault conditions.

Applications

• AC Motor Control
• Uninterruptible Power Supplies
• Industrial Power Meters/Monitors
• Data Acquisition Systems

Procurement Notes

Verify the specific suffix YS-2 against official documentation to confirm the automotive-grade temperature rating and unipolar input configuration. Ensure that the ordering information matches the exact package type and accuracy class required for the application environment before finalizing procurement.

Selection Notes

Select this component when simultaneous multi-channel sampling is required to maintain signal phase relationships. The unipolar input range specification suits applications where signals do not cross ground potential. Consider the parallel interface requirements and the 44-pin PQFP footprint constraints during the design phase.

Part Context

This device belongs to the AD7865 family of high-speed ADCs. The 'Y' suffix denotes an extended temperature range suitable for automotive environments, while the '-2' suffix indicates the specific unipolar voltage input range configuration within the product line.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD7865BS-2 for commercial temperature ranges. Cross-vendor alternatives require careful evaluation of sampling rates, input ranges, and interface compatibility.