Current-to-voltage conversion amplifier for amplifying weak photocurrent with low noise

C2719 is a current-to-voltage conversion amplifier used to amplify weak photocurrent from a photodiode with very low noise. Three ranges of photocurrent detection sensitivity level (H, M, L) are selectable to match the input signal. A 10-turn potentiometer is used to zero the amplifier level so fine adjustments are possible with high resolution.

C2719 operates on the built-in dry batteries so it can be easily used anywhere. An external power input connector is also provided at the rear panel for a long, continuous operation or for use as part of a measurement system. In such applications, use the dedicated plug to connect to a stabilized DC power supply.

C2719 was developed specifically for use with Si photodiodes, but it can be used to detect photocurrent from phototubes.

特性 Features

? Three sensitivity ranges

H: 109 V/A

M: 107 V/A

L : 105 V/A

? Zero adjustment with high resolution

? Operates on either dry batteries or external power supply

? Compact and lightweight

Applications

? Precision photometry

? Laser monitors

? Optical power meters

? Colorimeters

? Low signal current preamplifiers