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AFM Cantilever Pre-Amplifier

The Pre-Amplifier supplies a Wheatstone bridge based sensor with a stable and low-noise reference voltage and amplifies the bridge output signal.
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AGF1860
Average lead time: 30 days

POA

Product Description

The pre-amplifier supplies a Wheatstone bridge based sensor with a stable and low-noise reference voltage and amplifies the bridge output signal. It can be generally used to amplify small sensor voltages. This signal is then wired to a data readout device (Lock-in amplifier, atomic force microscope controller, etc.). The internal fixed reference voltage amounts to 2.048V but can be switched via a jumper to an external bridge supply. The total gain is set to G=100 with a high bandwidth of 2.5MHz. An offset voltage in the output signal can be corrected by adding an external DC bias or manually with an onboard potentiometer.

Key Features

  • Internal reference voltage of 2.048V (can be switched via jumper to external bridge supply)
  • Total Gain of G=100
  • High bandwidth of 2.5MHz
  • Onboard offset correction
Features & Specifications
Pre-amp PCB
48 x 28 x 1.6mm
Pre-amp PCB incl. connectors
52 x 28 x 7mm
Enclosure
46 x 36 x 18mm
Operation voltage Vs
±5 to ±15V
Gain, voltage amplification
100x
Bandwith
f3dB = 2.5MHz @ 2mVpp sine input signal
Power consumption
340mW @ Vs = ±10V (IBias = ±17mA), 160mW @ Vs = ±5V (IBias = ±16mA)
Manual onboard offset range
±5V
External offset voltage range
(Vs-) -0.5 V ro (Vs+) 0.5 V
Output impedance
50Ω
Input impedence
3GΩ / 6pF
Wheatstone bridge supply voltage (external input possible)
2.048V (voltage reference)
Slewrate output stage
27V/µs
Input connector (cantilever side)
FFC 8 Pin
Output connector
Header Connector 8 Pin
Input FFC cable
FFC, 8 pol, length = 152mm
Output cable
Shielded flexible cable, I=1m, open ends
LEAD TIMES: Average Lead Times are shown individually in working days for any products not currently in stock. Whilst we regularly update this, actual Lead Times can vary due to supply chain fluctuations.