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Kolibri Preamp Kit/Cable Kit

Highly reliable low noise preamplifier for KolibriSensor

Kolibri preamplifier
Kolibri preamplifier

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

KEY FEATURES

  • High gain of 10 V/pC
  • Low input noise
  • Optimized for AC-coupled charge sources

MADE FOR THESE METHODS

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SPECIFICATIONS

Kolibri Preamp Kit/Cable Kit
Performance
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

Operation
Power supply voltage

±15 V

Current consumption

±35 mA typ.

Operating temperature

+20 °C to +40 °C

Mounting
Weight

200 g

Dimensions

94 x 51 x 27 mm without connectors

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