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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
£1,308.47
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
Delivery & Returns
PRICE & AVAILABILITY: Please note that while we are working closely with our suppliers to minimise any global supply chain issues, prices and availability may be subject to change at short notice.