High-frequency component users often encounter issues such as unwanted oscillations due to poor amplifier design, poor grounding, nonlinearity, gain peaking, and reduced bandwidth. FEMTO high-frequency amplifiers are designed to eliminate these problems. FEMTO high-frequency amplifiers are unaffected by signal source parameters and input lines, delivering precise performance that meets their specifications. Even with source capacitances as high as 2 nF (HCA-1M-1M-C), there is no gain peaking, oscillation, or significant bandwidth reduction.

I. Features

● Bandwidth and frequency response independent of detector capacitance (up to 15 pF)

● Low Noise 1.1pA/√Hz Equivalent Input Noise Current

● Bandwidth DC ... 10 MHz

● Transimpedance (Gain) 1 x 10^5 V/A

● Protection against ± 3.5 kV Transients

II. Applications

● Photodiode and Photomultiplier Amplifier

● Spectroscopy

● Charge Amplifier

● Ionization Detectors

● Preamplifier for Lock-Ins, A/D Converters, etc.

III. Technical Specifications

Output voltage ±1.5 V, @ 50 Ω load. Offset adjustable via trim potentiometer. Output short-circuit protected. Adjustable bias output (-12 V ... +12 V) for biasing photodetectors. Power supply via 3-pin Lemo? socket. Connector included. Optional power supply PS-15. For more information, please refer to the datasheet. Note: The maximum detector capacitance listed above means that below this value, the specified 3dB bandwidth (±15%) is guaranteed. Larger capacitances can also be used but may slightly affect bandwidth and frequency response.

*For the ultra-fast models HCA-100M-50K-C, HCA-200M-20K-C, and HCA-400M-5K-C, if the source capacitance reaches the maximum values mentioned above, the bandwidth may be reduced to 25% of the nominal value. Especially for these models, short cables at the input and the use of low-capacitance sources are crucial. For more information, please refer to the datasheet or contact FEMTO.

IV. About Us

Shenzhen Bonade Precision Instrument Co., Ltd. offers products including laser power meters, laser energy meters, beam analyzers, helium-neon lasers, friction coefficient testing, IP1x-6x dustproof test probes, IPX1-X8 waterproof testing equipment, floor tile friction coefficient testers, Munro pendulum friction coefficient testers, DIN51130 anti-slip testing, static friction coefficient tester asm825A, BOT-3000E American ANSI137.1 dynamic friction coefficient tester, and other standard friction coefficient testers. If you have any needs, feel free to contact us for consultation.