LT1469ACDF-2#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1469ACDF-2#PBF is a dual precision high-speed operational amplifier featuring 16-bit accuracy, designed for stability at gains of two or greater. It offers a gain bandwidth product of 200MHz and a slew rate of 30V/µs. The device operates within supply voltages of ±5V to ±15V and includes a maximum input offset voltage of 125µV with drift under 3µV/°C. Packaged in a space-saving 12-lead 4mm × 4mm Plastic DFN, it supports commercial temperature ranges from 0°C to 70°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Decompensated design ensuring stability for gains of two or greater
• High AC performance with 200MHz gain bandwidth and low distortion
• Precision DC characteristics tailored for inverting applications
• Optimized total input noise for source resistances between 1kΩ and 20kΩ

Instrumentation, Op Amps, Buffer Amps Applications

• High accuracy data acquisition systems
• 16-bit DAC current-to-voltage converters
• ADC buffers requiring full 16-bit AC and DC performance
• Low distortion active filters
• Photodiode amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. The DF suffix indicates a 12-lead DFN package. Ensure the selected variant matches the required operating temperature range for the intended application environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high speed and precision are required simultaneously. Use this decompensated version only if the circuit gain remains at two or greater; otherwise, utilize the unity-gain stable LT1469. Consider the exposed pad thermal requirements for the DFN package during layout.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1469 family of precision op amps. The LT1469-2 variant provides enhanced AC performance compared to the standard LT1469 by reducing internal compensation capacitors. It shares identical DC precision specifications but requires a minimum closed-loop gain of two for stability.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The LT1469CS8-2#PBF serves as a direct replacement offering identical electrical performance in an 8-lead SOIC package. Verify that the target PCB footprint accommodates the different physical dimensions of the SOIC versus the DFN package.

Instrumentation, Op Amps, Buffer Amps FAQ

Why is the LT1469-2 decompensated?

It is decompensated to achieve superior AC performance, including higher gain bandwidth and faster settling times, provided the circuit maintains a gain of two or greater.

How should input bias currents be managed for optimal DC accuracy?

Bias current cancellation is trimmed at zero common mode voltage. Balanced source resistance is not recommended as it degrades DC accuracy and increases noise; instead, minimize leakage and use guard rings.