DetailSPECS KolibriPreamp
Highly reliable low noise preamplifier for KolibriSensor (KolibriPreamp Kit/Cable Kit)
With the Kolibri Preamp, the oscillation of the KolibriSensor can be detected with unprecedented precision. The noise floor is below 1fm/√Hz, one order of magnitude lower than achieved with traditional current-to-voltage converter setups and lower than achieved with even the best interferometric detection systems. With the KolibriPreamp, users of the KolibriSensor can obtain lower frequency noise, enabling faster scanning speeds and smaller oscillation amplitudes.
The KolibriPreamp was developed by FEMTO® Messtechnik GmbH and takes advantage of their excellent know-how and experience with preamplifiers. Excellent characteristics are achieved also with relatively long wiring distances between the KolibriSensor and the KolibriPreamp’s input. In UHV systems, the KolibriPreamp is operated outside the vacuum chamber. The KolibriPreamp combines lowest-noise deflection detection with the great ease of use and reliability of external electronics. The KolibriPreamp seamlessly integrates with the Nanonis oscillation controller.
A 5-meter cable kit provides power to the amplifier as well as signal lines for excitation and oscillation. The cable kit is also available without the preamplifier
SPECIFICATIONS
| Gain | 10 V/pC (@ >1 MΩ load), equivalent current gain: 1.6 V/μA |
| Gain accuracy | ±3 % |
| Bandwidth | 250 Hz to 15 MHz (-3 dB) |
| Input impedance | 1 GΩ || 10 nF, 20 Ω (AC @ 1 MHz) |
| Input charge noise | 40 x 10-21 C/√Hz (@ 1 MHz, open input), 90 x 10-21 C/√Hz (@ 1 MHz, 100 pF source capacitance) |
| Input current noise | 250 fA/√Hz (@ 1 MHz, open input), 570 fA/√Hz (@ 1 MHz, 100 pF source capacitance) |
| Input noise density | 700 pV/√Hz (@ 1 MHz) |
| Output voltage range | 10 Vpp |
| Output impedance | 50 Ω |
| Power supply voltage | ±15 V |
| Current consumption | ±35 mA typ. |
| Operating temperature | +20 °C to +40 °C |
| Weight | 200 g |
| Dimensions | 94 x 51 x 27 mm without connectors |