5962-8964501PA

Overview

The AD845 is a fast, precise N-channel JFET input monolithic operational amplifier fabricated using Analog Devices' complementary bipolar process. It features a 100 V/µs slew rate, 16 MHz unity-gain bandwidth, and 350 ns settling time to 0.01%. DC performance includes a maximum 0.25 mV input offset voltage and 0.5 nA input bias current. The device operates on ±4.75 V to ±18 V supplies and maintains stability driving 100 pF parallel with 500 Ω loads.

Feature Summary

• High-speed precision architecture combining fast settling times with low input offset voltage for high-resolution applications
• N-channel JFET input stage providing extremely low input bias current and noise characteristics
• Internally compensated design ensuring unity-gain stability across the full operating temperature range

Applications

• Active filters requiring high speed and precision
• High-speed integrators and sample-and-hold amplifiers
• Photodiode preamplifiers and log amplifiers
• Buffering analog-to-digital and digital-to-analog converters

Procurement Notes

Verify that the specific part number matches the required military temperature grade (-55°C to +125°C) and CERDIP package configuration. Confirm compliance with relevant military specifications if sourcing for defense or aerospace environments. Ensure proper handling procedures are followed due to the sensitivity of the JFET input structure.

Selection Notes

Select this component when upgrading existing BiFET or FET hybrid amplifier designs to improve speed and precision. It is suitable for applications demanding 12-bit accuracy in unity gain buffer circuits. Consider the industrial or commercial grades if the operating environment does not require the extended military temperature range.

Part Context

This part number represents the military-grade version of the AD845 series. It shares the same core electrical specifications as the standard AD845 but is qualified for operation over the -55°C to +125°C temperature range. It utilizes an 8-lead ceramic dual in-line package (CERDIP) designed for high reliability in harsh environments.

Replacement Considerations

Publicly confirmed substitutes include LF400, HA2520, HA2522, HA2525, HA2620, HA2622, HA2625, 3550, OPA605, and LH0062. Verify pinout compatibility and ensure the replacement meets the required slew rate and offset voltage specifications.