Our Products
- UV-Blaster ™ Series
- Laser
- Light Sources
- General Purpose Optics
- Raman System
- Large Size Optics
- Crystals, AO & EO Components
- Industrial Laser Consumables
- Sensors & Module
- Cameras
- Fiber Optics & Components
- Laser Diagnostic
- Spectroscopy Instruments & Opto Electronics
- Molecular & Elementary Analyzer
- Optical Metrology
- Solar PV & LED Test System
- Lab Environment Control System
- Opto Mechanical
- Customized Solutions for Scientific Research
- Adaptive Optics and Wavefront Sensors
- UV-Blaster ™ Series
- Laser
- Light Sources
- General Purpose Optics
- Raman System
- Large Size Optics
- Crystals, AO & EO Components
- Industrial Laser Consumables
- Sensors & Module
- Cameras
- Fiber Optics & Components
- Laser Diagnostic
- Spectroscopy Instruments & Opto Electronics
- Molecular & Elementary Analyzer
- Optical Metrology
- Solar PV & LED Test System
- Lab Environment Control System
- Opto Mechanical
- Customized Solutions for Scientific Research
- Adaptive Optics and Wavefront Sensors
»High-Speed Current Amplifier
- Input noise down to 270 fA/√Hz
- Bandwidth up to 400 MHz
- Gain up to 10° V/A
- Flat frequency response
- Stabilized and adjustable bias voltage output for biasing external photodiodes
- EMI-shielded case
APPLICATIONS
- Fast detection with large area photodiodes | Spectroscopy | Photodetection with PMTs and photodiodes | Ionization detectors | Pyro- and piezoelectric detectors
Output voltage ±1.5 V, @ 50 Ω load. Offset adjustable by trimpot. Output short-circuit protected. Adjustable bias-output (−12 V … +12 V) for biasing photodetectors. Power supply via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet.
NOTE: The maximum detector capacitance listed above means that up to this value the specified −3dB-bandwidth (±15 %) is guaranteed. Larger capacitances are also possible, but will slightly influ- ence the bandwidth and frequency response.
*For the ultra fast models HCA-100M-50K-C, HCA-200M-20K-C and HCA-400M-5K-C a reduction in bandwidth up to 25 % of the nominal values might occur if the source capacitance reaches the above noted maximum source capacitance values. Especially for these models short cables at the input and the use of low capacitance sources is of major importance. For further infor- mation please view the datasheet or contact FEMTO®.
Model | −3 dB Band-width (DC …) | Noise Current [/√Hz] | Transim-pendance(Gain) | Rise/Fall Time | Max Source Capacitance |
|---|---|---|---|---|---|
| HCA-1M-1M | 1 MHz | 270 fA | 1 x 10° V/A | 350 ns | 50 pF |
| HCA-1M-1M-C | 1 MHz | 3.5 pA | 1 x 10° V/A | 350 ns | 2 nF |
| HCA-2M-1M | 2 MHz | 340 fA | 1 x 10° V/A | 180 ns | 25 pF |
| HCA-2M-1M-C | 2 MHz | 3.5 pA | 1 x 10° V/A | 180 ns | 1 nF |
| HCA-4M-500K | 4 MHz | 490 fA | 5 x 10° V/A | 90 ns | 15 pF |
| HCA-4M-500K-C | 4 MHz | 3.5 pA | 5 x 10° V/A | 90 ns | 500 pF |
| HCA-10M-100K | 10 MHz | 1.1 pA | 1 x 10° V/A | 35 ns | 15 pF |
| HCA-10M-100K-C | 10 MHz | 3.5 pA | 1 x 10° V/A | 35 ns | 150 pF |
| HCA-20M-100K-C | 20 MHz | 3.5 pA | 1 x 10° V/A | 18 ns | 50 pF |
| HCA-40M-100K-C | 40 MHz | 3.7 pA | 1 x 10° V/A | 10 ns | 30 pF |
| HCA-100M-50K-C | 100 MHz | 3.8 pA | 5 x 10° V/A | 3.5 ns | 20 pF* |
| HCA-200M-20K-C | 200 MHz | 4.9 pA | 2 x 10° V/A | 1.9 ns | 8 pF* |
| HCA-400M-5K-C | 400 MHz | 21 pA | 5 x 10° V/A | 1 ns | 10 pF* |
