Low Noise Preamplifier

LI-75A

The LI-75A is a preamplifier designed to increase measurement sensitivity when using the NF Lock-in Amplifiers.

Input terminal

Balanced

Input impedance

100MΩ // 50pF

CMRR

120dB (DC to 100Hz)

Input referred noise

2nV/√Hz (at 1kHz)

Voltage gain

40dB

Frequency response

DC to 1MHz (DC), 0.2Hz to 1MHz (AC)

Maximum output voltage

± 10V/2k ohm (DC to 200kHz)

Power requirements

Provided by the Lock-in amplifier or PS-70A

Dimensions (mm)

120(W) X 55(H) X 200(D)

Weight

1.15kg