1.1 Features
CA5350
1-2
1.1 Features
“CA5350 PROGRAMMABLE CURRENT AMPLIFIER”
is the current input type
preamplifier that converts the input current signal from photo multiplier or photo diode
into voltage signal. It has both high gain and wide frequency band, and can be varied
over a wide range from 10k (V/A) to 10G(V/A). Besides, it is equipped with filters with
rise time from 1µs to 300ms, which allows removing unnecessary noise components and
improve SNR (signal noise ratio) of the signal. Furthermore, it is also equipped with a
current suppression unit(±8nA ~ ±800µA full scale) for cancelling dark current of the
sensor.
This product also has GPIB and USB interface, by which gain and various other
settings can be changed from the external controllers such as a personal computer.
Automatic measurement system can also be easily built.
High sensitivity, wide band
DC ~ 14kHz (response speed 25µs) when 10G(V/A) and DC ~ 500kHz (response speed
0.7µs) when 1M(V/A).
Stable with respect to the source capacitance
Even when the source capacitance of 1000pF is added, it operates stably without any
concerns of oscillations. Besides, overshoot and ringing will not occur in the pulse
response.
Variable Gain
Gain can be set in the range of 10k(V/A) ~ 10G(V/A) with a step by 10 times (7 range).
Moreover, by setting the output amplifier to ×10 times, maximum 100G(V/A) of gain
setting is possible.
Variable Filters
It is equipped with filters (low pass filter) with the rise time in the range of 1µs ~ 300ms
by 1-3 sequence in 12 ways. They can remove the noise components and improve the
SNR.
Current suppression
It is equipped with current suppression for cancelling the dark current of sensor. It
covers the full scale ±8nA ~ ±800µA in 6 range.
Remote control
Because USB and GPIB interfaces are equipped as standard features, you can build an
automatic measurement system.
1.2 Applications
High sensitivity detection of output current signal from photomultiplier or photo
diode.
Measuring weak electrical current signal from electrochemical cells
Material research of dielectric substances, etc.
