Product ranges by FEMTO Messtechnik

The LCA Series comprises low-noise transimpedance amplifier modules for converting very small sensor and detector currents into measurable voltage signals. Fourteen variants provide transimpedance values from 10^7 to 10^13 V/A, bandwidths from DC to 400 kHz and input noise down to 0.18 fA/√Hz.

The HVA wideband voltage amplifier range provides DC-coupled amplification for small voltage signals across bandwidths of 10, 200 or 500 MHz. Five variants combine fixed or switchable gain settings with either a 50 Ω bipolar input or a 1 MΩ FET input.

The DHPVA wideband voltage amplifier range provides six switchable gain levels from 10 to 60 dB for small-signal measurements in 50 Ω systems. It combines DC-coupled operation with selectable 100 or 200 MHz full bandwidth, reduced-bandwidth filtering, local controls and opto-isolated remote inputs.

The DUPVA series comprises 50 Ω variable-gain voltage amplifiers for small AC signals in pulse, transient and GHz-bandwidth measurement systems. Two models provide gain settings spanning 20 to 70 dB across the range, with local or opto-isolated remote selection and upper cut-off frequencies of 1.1 or 1.2 GHz.

The LIA-BV(D)-150 Eurocard lock-in amplifier range provides analogue single- and dual-phase signal detection across working frequencies from 5 Hz to 120 kHz. Voltage and current inputs, configurable filters and local or opto-isolated digital controls support integration into scientific and industrial measurement systems.

The LCA-S-400K-BSI and HCA-S-20M-BSI black silicon photoreceiver range converts optical signals from 200 to 1100 nm into voltage outputs using fixed-gain transimpedance amplifiers. Two models provide a choice between a 400 kHz receiver for low-level measurements and a 20 MHz receiver for faster optical signals.

HCA-S Si and InGaAs photoreceivers combine PIN photodiodes with fixed-gain transimpedance stages for optical-to-voltage conversion from DC to 400 MHz. Model choices cover wavelengths from 320 to 1700 nm, while a 20 MHz black-silicon option extends coverage from 200 to 1100 nm.

The HQA-15M-10T converts small alternating charge signals into a measurable voltage with a fixed gain of 10 V/pC. Its 250 Hz to 15 MHz frequency range supports tuning forks, piezoelectric and pyroelectric detectors, longitudinal resonators and AFM systems.

The HLVA-100 logarithmic voltage amplifier converts signals from ±20 µV to ±200 mV or ±200 µV to ±2 V into a compressed logarithmic output. Its 5 ns pulse response, 50 Ω interfaces and baseline correction support high-dynamic-range pulse and transient measurements.