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Femtoamp Bias Current Op Amps Achieve 500MHz Gain Bandwidth for TIA & Buffer Applications
MILPITAS, CA - September 29, 2014 - Linear Technology announces the LTC6268 and LTC6269, FET-input single and dual op amps, which deliver outstanding performance for high speed and high dynamic range transimpedance amplifier (TIA) and buffer applications. With just 3fA bias current at 25°C and 4pA max over the entire -40°C to 125°C temperature range, the LTC6268/LTC6269 can resolve input currents from several femtoamps to amps. Wideband voltage and current noise is 4.3nV/√Hz and 5.5fA/√Hz, respectively, enabling high dynamic range circuits. Built for speed as well as precision, the LTC6268 features 500MHz gain bandwidth product, sub-pF input capacitance and -100dB harmonic distortion at 1MHz. In addition to photodiode and photomultiplier (PMT) circuits, the LTC6268/9 are well suited for other high impedance sensor applications and for driving analog-to-digital converters (ADCs).
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Fast Ultralow Bias Current Amplifier  Click Photo for High-Res Image |
The LTC6268 is available in a 6-lead SOT-23 package, as well as an 8-lead SOIC with guard pins to protect against board leakage currents. The LTC6269 is available in MSOP-8 with exposed pad and 3mm x 3mm DFN-10 packages. The LTC6268 and LTC6269 are unity-gain stable and fully specified over the industrial -40°C to 85°C and -40°C to 125°C temperature ranges. Prices start at $2.90 each for the LTC6268 and $4.90 for the LTC6269 each in 1000-piece quantities. For more information, visit www.linear.com/product/LTC6268 and www.linear.com/product/LTC6269. |
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Summary of Features: LTC6268
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LTC6268 |
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