Common Circuits Typically, as often mentioned in operational amplifier manufacturers' application manuals, bandwidth and measurement speed usually decrease significantly at high gains. Even with moderate gains, it is common to achieve only a few hertz of bandwidth, making modulation or time-resolved measurements nearly impossible. Therefore, FEMTO has been dedicated for years to developing special circuit techniques, combined with carefully selected components, ultimately achieving outstanding measurement results. Our professional current amplifiers offer noise performance far superior to traditional current-to-voltage converters using operational amplifiers at the same bandwidth. The LCA series is unparalleled, currently the lowest-noise current-to-voltage converter modules on the market.

FEMTO microcurrent signal amplifiers are modular preamplifiers that amplify faint current signals in the fA to nA range obtained in laboratories and field applications by 10^2 to 10^13 times, converting current to voltage (transimpedance) for measurement via instruments or various devices.

I. Features

● Bandwidth and frequency response independent of detector capacitance (up to 10 nF)

● Ultra-low noise, equivalent input noise current of 14 fA/√Hz

● DC bandwidth ... 20 kHz

● Transimpedance (gain): 2 x 10^8 V/A

II. Specifications