Current Amplifiers
Most of the light detectors deliver a current proportional to the intensity of light. This current needs to be transformed to a voltage with very low noise electronics. This is the purpose of our current amplifiers. Our models covers a wide range of amplifiers from ultra low noise and low frequency to GHz bandwidth amplifiers. Some of them has variable gain to accommodate to your light level. If further amplification is necessary please see our section with Voltage amplifiers and Lock-in amplifiers.
These amplifiers are sorted by bandwidth.
High Speed, 400 MHz

Features Minimum Input Noise 20 pA /√Hz Bandwidth up to 400 MHz Gain up to 5*10^3 V/A Flat Frequency Response Stabilized and Adjustable Bias...
Ultra Low Noise, 400 kHz

Features Extremely Low Input Noise Current of 65 fA/√Hz Fixed Gain 1×10^7 V/A Low Pass Filter 400kHz Flat frequency response EMI-shielded...
Variable Gain, up to 400 Hz

Features 0.4 fA peak-to-peak noise Transimpedance gain from 10^4 to 10^13 V/A 240 dB dynamic range for sub-fA to mA measurements Adjustable...
Variable gain, up to 200 MHz

Features Transimpedance Gain from 10^2 to 10^8 V/A Bandwidth up to 200 MHz Rise Time down to 1.8 ns Internal Signal Filters Adjustable Bias...
High Speed, 4 MHz

Features Minimum Input Noise 3.5 pA /√Hz Bandwidth up to 4 MHz Gain up to 5*10^5 V/A Flat Frequency Response Stabilized and Adjustable Bias...
Ultra Low Noise, 10 kHz

Features Extremely Low Input Noise Current of 10 fA/√Hz Fixed Gain 5×10^8 V/A Low Pass Filter 10kHz Flat frequency response EMI-shielded...
Ultra Low Noise, 200 Hz

Features Extremely Low Input Noise Current of 1.5 fA/√Hz Fixed Gain 10^10 V/A Low Pass Filter 200 Hz Flat frequency response EMI-shielded case
Ultra Low Noise, 40 kHz

Features Extremely Low Input Noise Current of 19 fA/√Hz Fixed Gain 1×10^8 V/A Low Pass Filter 40kHz Flat frequency response EMI-shielded...
Ultra Low Noise, 200 kHz

Features Extremely Low Input Noise Current of 40 fA/√Hz Fixed Gain 2×10^7 V/A Low Pass Filter 200kHz Flat frequency response EMI-shielded...
Variable gain, up to 500 kHz

Features Transimpedance Gain from 10^3 to 10^11 V/A Input Noise Down to 4.3 fA/√Hz Bandwidth up to 500 kHz Rise Time down to 700 ns Bias-Voltage...
High Speed, 2 MHz

Features Minimum Input Noise 340 pA /√Hz Bandwidth up to 2 MHz Gain up to 10^6 V/A Flat Frequency Response Stabilized and Adjustable Bias...
High Speed, 10 MHz

Minimum Input Noise 1.1 pA /√Hz Bandwidth up to 10 MHz Gain up to 10^5 V/A Flat Frequency Response Stabilized and Adjustable Bias Voltage Output...
Ultra Low Noise, 2 Hz

Features Extremely Low Input Noise Current of 0.18 fA/√Hz Variable Gain 10^12 V/A and 10^13 V/A Variable Low Pass Filter 2 Hz, 0.3 Hz and 0.1...
High Speed, 200 MHz

Features Minimum Input Noise 5.3 pA /√Hz Bandwidth up to 200 MHz Gain up to 2*10^4 V/A Flat Frequency Response Stabilized and Adjustable Bias...
Ultra Low Noise, 20 kHz

Features Extremely Low Input Noise Current of 20 fA/√Hz Fixed Gain 2×10^8 V/A Low Pass Filter 20kHz Flat frequency response EMI-shielded...
High Speed, 1 MHz

Features Minimum Input Noise 270 fA /√Hz Bandwidth up to 1 MHz Gain up to 10^6 V/A Flat Frequency Response Stabilized and Adjustable Bias...