5402A Low Noise Current Amplifier

Highlights​​

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• Low-input impedance

• Low noise

• Single-ended virtual ground input

• Six gain settings

• DC to > 4 MHz frequency response

• Internal rechargeable batteries

Applications and Software​

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The 5402A is a low-noise current input preamplifier designed for use whenever the signal source is a current source— for example, an electron multiplier, ion collector, photo multiplier or photodiode, or when measuring sample impedances. The gain (transimpedance) is switch selectable with six settings enabling the amplifier, on its most sensitive range, to detect fractions of a picoamp without noise degradation.

• Photodiode amplification 

• Photomultiplier amplification

• Ion collector amplification

• Electron multiplier amplification

• Impedance measurements

Specifications​

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Inputs

• Modes: Single-ended

• Coupling: DC

• Connector: BNC socket

• Max. Safe Input Voltage: ±20 Vdc

• Input Bias Current: 1 pA typical

• Input Referred Voltage Noise: 2.5 nV/√Hz typical