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LTC6268IS8#PBF

LTC6268IS8#PBF

Analog Devices
Operational Amplifiers - Op Amps 500MHz Ultra-L Bias C FET In Op Amp
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Overview

The LTC6268IS8#PBF is a high-speed, single-channel FET-input operational amplifier designed for applications requiring extremely low input bias current and high bandwidth. It features a 500MHz gain-bandwidth product and a remarkably low input capacitance of 0.45pF, making it ideal for high-impedance sensor interfaces.

Why Choose This Part

This amplifier offers an exceptional combination of 500MHz bandwidth and a sub-fA input bias current (typically 3fA at room temperature). Its low input capacitance of 0.45pF is critical for maintaining stability and wide bandwidth in transimpedance configurations.

Applications

Photodiode Transimpedance Amplifiers
Converting low-level current signals from high-speed photodiodes into usable voltage signals with minimal noise injection.
High Impedance Sensor Conditioning
Buffering capacitive sensors and high-impedance probes where loading effects must be minimized.
Precision ADC Drivers
Driving high-speed analog-to-digital converters in instrumentation where DC precision and AC performance are both required.
Low Leakage Current Integration
Utilized in integrator circuits where the ultra-low femtoampere-level bias current prevents drift over time.

Getting Started

When designing with this part, use a guard ring around the high-impedance input nodes to prevent PCB leakage currents from degrading performance. Evaluation can be performed using the DC2062A demonstration circuit, which is specifically designed to showcase the high-speed TIA capabilities of this FET-input op amp.

Part of Linear Tech / ADI LT Series family » LTC6268IS8

LTC6268IS8 Family

Part NumberDifferenceStock
LTC6268IS8-10#PBF (Analog Devices Inc.) 10#PBF 320