DISAIN CIRCUIT REDUKSI NOISE PADA DETEKTOR PHOTODIODE ARRAY UNTUK APLIKASI UV-VIS SPECROPHOTOMETER

UV-Vis Spectrophotometer is a tool used to measure the absorbance of a sub
stance. Detector which is used to detect the magnitude of absorbance of a substance is the
photodiode array. The output of the photodiode array is in current form, the magnitude of
current proportional to the magnitude of light intensity on the detector. In order to result
ing output of photodiode array can be measured is needed strengthening. The initial design
of the output circuit produced by the photodiode array vulnerable noise, whether it comes
from the circuit itself, thermal and so forth. The purpose of this research is to design pro
cessing circuit the output of signal that withoutnoise, starting from the design of electronic
circuit photodiode array detector, current to voltage converter, strengthening of the volt
age, noise control and hardware-software interfacing that displayed on a PC (personal
computer) for the application of UV-VIS spectrophotometer. This type of photodiode array
S4111-16R used is 320nm-1100nm spectral response.