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 frequency. 

Ultra Low Noise, 2 Hz

Part number: LCA-2-10T

Part number: LCA-2-10T DC to 2 Hz, 0.18 fA/√Hz noise current, 1x10^13 V/A Gain, 200 ms rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 13234 SEK ex.moms

Ultra Low Noise, 30 Hz

Part number: LCA-30-200G

Part number: LCA-30-200G DC to 30 Hz, 0.5 fA/√Hz noise current, 2x10^11 V/A Gain, 12ms rise/fall time Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified 13234 SEK ex.moms

Ultra Low Noise, 30 Hz

Part number: LCA-30-1T

Part number: LCA-30-1T DC to 30 Hz, 0.5 fA/√Hz noise current, 1x10^12 V/A Gain, 12 ms rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 13234 SEK ex.moms

Ultra Low Noise, 200 Hz

Part number: LCA-200-100G

Part number: LCA-200-100G DC to 200 Hz, 1.5 fA/√Hz noise current, 1x10^11 V/A Gain, 2 ms rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 12438 SEK ex.moms

Ultra Low Noise, 200 Hz

Part number: LCA-200-10G

Part number: LCA-200-10G DC to 200 Hz, 1.5 fA/√Hz noise current, 1x10^10 V/A Gain, 2 ms rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 12438 SEK ex.moms

Variable Gain, up to 400 Hz

Part number: DDPCA-300

Part number: DDPCA-300 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 voltage on input for DUT biasing Compact housing for use close to the... 28258 SEK ex.moms

Ultra Low Noise, 1 kHz

Part number: LCA-1K-5G

Part number: LCA-1K-5G DC to 1kHz, 3 fA/√Hz noise current, 5x10^9 V/A Gain, 2 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 2 kHz

Part number: LCA-2K-2G

Part number: LCA-2K-2G DC to 2kHz, 4.5 fA/√Hz noise current, 2x10^9 V/A Gain, 200 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 4 kHz

Part number: LCA-4K-1G

Part number: LCA-4K-1G DC to 4kHz, 6.5 fA/√Hz noise current, 10^9 V/A Gain, 100 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 10 kHz

Part number: LCA-10K-500M

Part number: LCA-10K-500M DC to 10kHz, 10 fA/√Hz noise current, 5x10^8 V/A Gain, 40 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 20 kHz

Part number: LCA-20K-200M

Part number: LCA-20K-200M DC to 20kHz, 14 fA/√Hz noise current, 2x10^8 V/A Gain, 20 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 40 kHz

Part number: LCA-40K-100M

Part number: LCA-40K-100M DC to 40kHz, 19 fA/√Hz noise current, 1x10^8 V/A Gain, 10 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 100 kHz

Part number: LCA-100K-50M

Part number: LCA-100K-50M DC to 100kHz, 30 fA/√Hz noise current, 5x10^7 V/A Gain, 4 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 200 kHz

Part number: LCA-200K-20M

Part number: LCA-200K-20M DC to 200kHz, 40 fA/√Hz noise current, 2x10^7 V/A Gain, 2 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Ultra Low Noise, 400 kHz

Part number: LCA-400K-10M

Part number: LCA-400K-10M DC to 400kHz, 65 fA/√Hz noise current, 1x10^7 V/A Gain, 1 µs rise/fall time *Standard delivery time: 3 weeks ARO, Conditions: Ex.Works Germany unless specified* 10149 SEK ex.moms

Variable gain, up to 500 kHz

Part number: DLPCA-200

Part number: DLPCA-200 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 Adjustable  Manual and Remote Control *Standard delivery... 19303 SEK ex.moms

High Speed, 1 MHz

Part number: HCA-1M-1M

Part number: HCA-1M-1M 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 Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 1 MHz

Part number: HCA-1M-1M-C

Part number: HCA-1M-1M-C Features Minimum Input Noise 3.5 pA /√Hz  Bandwidth up to 1 MHz  Gain up to 10^6  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 2 MHz

Part number: HCA-2M-1M

Part number: HCA-2M-1M 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 Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 2 MHz

Part number: HCA-2M-1M-C

Part number: HCA-2M-1M-C Features Minimum Input Noise 3.5 pA /√Hz  Bandwidth up to 2 MHz  Gain up to 10^6  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 4 MHz

Part number: HCA-4M-500K

Part number: HCA-4M-500K Features Minimum Input Noise 490 fA /√Hz  Bandwidth up to 4 MHz  Gain up to 5*10^5  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 4 MHz

Part number: HCA-4M-500K-C

Part number: HCA-4M-500K-C 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 Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 10 MHz

Part number: HCA-10M-100K

Part number: HCA-10M-100K Features 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 for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 10 MHz

Part number: HCA-10M-100K-C

Part number: HCA-10M-100K-C Features Minimum Input Noise 3.5 pA /√Hz  Bandwidth up to 10 MHz  Gain up to 10^5  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 20 MHz

Part number: HCA-20M-100K-C

Part number: HCA-20M-100K-C Features Minimum Input Noise 3.5 pA /√Hz  Bandwidth up to 20 MHz  Gain up to 10^5  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 40 MHz

Part number: HCA-40M-100K-C

Part number: HCA-40M-100K-C Features Minimum Input Noise 3.7 pA /√Hz  Bandwidth up to 40 MHz  Gain up to 10^5  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 10746 SEK ex.moms

High Speed, 100 MHz

Part number: HCA-100M-50K-C

Part number: HCA-100M-50K-C Features Minimum Input Noise 3.9 pA /√Hz  Bandwidth up to 100 MHz  Gain up to 5*10^4  V/A  Flat Frequency Response  Stabilized and Adjustable Bias Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 11045 SEK ex.moms

High Speed, 200 MHz

Part number: HCA-200M-20K-C

Part number: HCA-200M-20K-C 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 Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 11940 SEK ex.moms

Variable gain, up to 200 MHz

Part number: DHPCA-100

Part number: DHPCA-100 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 Voltage  Manual and Remote Control *Standard delivery time: 3... 23383 SEK ex.moms

High Speed, 400 MHz

Part number: HCA-400M-5K-C

Part number: HCA-400M-5K-C 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 Voltage Output for Biasing External Photodiodes  EMI-Shielded Case *Standard... 12836 SEK ex.moms