LT1469IS8-2#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1469IS8-2#PBF is a dual precision high-speed operational amplifier featuring 16-bit accuracy, designed for stability at gains of 2 or greater. It offers a gain bandwidth product of 200MHz and a slew rate of 30V/µs. The device operates within a supply voltage range of ±5V to ±15V and supports an operating temperature range from –40°C to 85°C. Key electrical specifications include a maximum input offset voltage of 125µV, a minimum DC gain of 300V/mV, and low distortion characteristics suitable for high-fidelity signal processing applications.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Decompensated design ensuring stability in non-inverting configurations with a closed-loop gain of 2 or greater
• High-speed performance characterized by a 200MHz gain bandwidth product and 30V/µs slew rate
• Precision DC accuracy optimized for 16-bit resolution with low input offset voltage and drift
• Low distortion output capability supporting full AC and DC performance in data acquisition systems

Instrumentation, Op Amps, Buffer Amps Applications

• High accuracy data acquisition systems requiring precise signal conditioning
• 16-bit DAC current-to-voltage conversion circuits
• ADC buffer stages demanding low distortion and high speed
• Low distortion active filter designs
• Photodiode amplifiers utilizing bias current cancellation

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature grade. The IS8-2 designation indicates an industrial temperature range and SOIC-8 packaging. Ensure compatibility with existing board layouts regarding pin configuration and thermal requirements. Consult official documentation for lead-free finishing details and tape-and-reel specifications if applicable.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when both high-speed AC performance and high DC precision are required simultaneously. The decompensated architecture provides superior bandwidth compared to unity-gain stable counterparts but mandates a minimum gain of 2. Consider the LT1469 if unity-gain stability is necessary, or the LT1468 for single-channel applications with similar precision metrics.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1469 family of precision operational amplifiers manufactured by Analog Devices. The family includes variants such as the LT1469 (unity-gain stable) and LT1468 (single channel). The LT1469-2 specifically addresses applications needing dual channels with enhanced high-frequency response while maintaining microvolt-level DC accuracy.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Official substitutes within the same family include the LT1469CS8-2#PBF for commercial temperature ranges and the LT1469AIDF-2#PBF for DFN packaging. Verify that replacement parts maintain the decompensated stability requirement of AV ≥ 2 to ensure circuit integrity without oscillation.

Instrumentation, Op Amps, Buffer Amps FAQ

Why is the LT1469-2 specified as stable only at gains of 2 or greater?

The LT1469-2 is a decompensated op amp with reduced internal compensation capacitance to achieve higher bandwidth. This design requires a noise gain of at least 2 to maintain phase margin and prevent oscillation.

How does the input bias current cancellation affect source resistance selection?

The inverting input bias current is trimmed to minimize errors in inverting configurations. Using balanced source resistance is not recommended as it can degrade DC accuracy and increase noise due to the mismatch between trimmed and untrimmed inputs.