AD7865YSZ-1

Overview

The AD7865YSZ-1 is a four-channel, simultaneous sampling, fast, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single +5 V supply and features a 2.4 µs successive approximation ADC architecture with four track/hold amplifiers. The device supports input ranges of ±5 V and ±10 V, offering overvoltage protection up to ±18 V for the ±10 V range. It includes an internal 2.5 V reference, on-chip clock oscillator, and a high-speed parallel interface compatible with 3 V processors. The Y version extends the operating temperature range to -40°C to +105°C. Maximum throughput is 350 kSPS per channel or 100 kSPS for all four channels.

Feature Summary

• Four simultaneously sampled inputs preserve relative phase information across channels.
• Hardware or software selectable channel conversion sequences optimize throughput rates.
• Integrated overvoltage protection allows analog inputs to withstand voltages beyond the selected range without damage.
• Low power consumption with a dedicated standby mode for energy efficiency.

Applications

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

Procurement Notes

Verify the specific suffix 'Y' indicates the extended industrial temperature range (-40°C to +105°C) compared to commercial variants. Confirm the '-1' suffix corresponds to the ±5 V and ±10 V bipolar input range specifications. Ensure the package type matches the 44-lead Plastic Lead Quad Flatpack (PQFP) requirement for your PCB layout.

Selection Notes

Select this component when simultaneous multi-channel sampling is required to maintain signal phase relationships. The AD7865YSZ-1 is suitable for applications needing 14-bit resolution at speeds up to 350 kSPS per channel. Consider the available input voltage ranges; this specific model supports bipolar signals. Evaluate the parallel interface requirements against your microprocessor or DSP capabilities.

Part Context

The AD7865 series comprises four-channel simultaneous sampling ADCs designed for high-speed data acquisition. The AD7865YSZ-1 specifically denotes the automotive-grade temperature variant with bipolar input ranges. It belongs to the broader AD7865 family, which also includes unipolar versions and commercial temperature grades, sharing the same core architecture and pinout.

Replacement Considerations

Direct substitutes within the same family include AD7865ASZ-1 and AD7865BSZ-1, though these have different temperature ratings (-40°C to +85°C). For unipolar applications, AD7865YSZ-2 is an alternative. No cross-family replacements are confirmed in official documentation.