OE4101 Current Pre-amplifier

Product description

The OE4101 is a transimpedance current pre-amplifier that utilizes a negative feedback structure to convert input current to voltage using a feedback resistor and to control amplification.

The OE4102 detects current by measuring the voltage drop across a resistor on the input current channel, amplifies and outputs a voltage signal proportional to the measured current.

OE4101 transimpedance low noise current pre-amplifier

60fA/√Hz input current noise

100V/A,10kV/A, 1MV/A, 100MV/A current transimpedance gain

Wide range, high resolution bias adjustment

Principle block diagram

Product specification

Test conditions: supply voltage = 12V, ambient temperature = 25°C, input current 10mA-10nA, gain steps 100V/A-100MV/A, 0.5m BNC coaxial cable connection.

Note: [1]. Refer to Table 3 for the maximum input current range of the input signal of each gain stage; among them, use BNC converter to connect to the measuring instrument to reduce the load capacitance for the 100V/A stage, and use 0.5m BNC cable for the other stages.

[2].The OE4101 is used as a negative feedback amplifier, the output signal is in opposite phase to the input signal.

Fig.1 Gain error-frequency curve

Fig.2 Phase shift-frequency curve