Contribute to instrumentation amplifier circuit design for photodiode

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I have built a circuit for operating a photodiode in close to zero volts and measuring the photocurrent that comes off the photodiode. Right now I have a light signal of ~80 mV and a dark signal of less than 5 mV. The high signal has a signal to noise ratio of 19:1, taken from my measurement of standard deviation of signal of ~ 4 mV, which may include noise from the stability of my light source. I need to take my output signal and amplify it to a maximum of ~4 V, without introducing (much) more noise. I would prefer to do so using inexpensive parts, and using the same Arduino setup (see below). Current schematic is included, however the photodiode is in fact an Edmund Optics UV-enhanced response silicon detector part # NT57-509 and the quiescient current selector of the ICL7611 is set to ground (quiescient current 100 uA). Circuit is hooked up to an Arduino, which is why there are voltage sources that say Board and PIN: these are the board output voltages and digital output pin voltages of the Arduino, respectively. Arduino code is also included, it requires the Statistic library, which can be found on the Arduino website. Thanks!

Electrical Engineering

Electronics

项目 ID: 2602000

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@deanosAU

Hi, can help with this.

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@betaenergy

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of hardware For each concept descriptions are as follows: Digital Motor Control: -3-phase induction motor vector control drive -Flux estimation algoritm generation -DSP(TMS320) implementation on motor drive -Low speed application -Torque and speed loop generation -Control algoritms Analog design -Low power distribution -Noissless special opamp based analog circuits -Analog filters -Orcad simulation of several circuits Electronic Design -RF transmitter and receiver -Bluetooh reader and transmitter -Magnetic reader Power Electronics -Implementation motor drive -AC/DC converter -DC-DC converter -Battery charger -Solar inverter -Renewable Energy simulations -Uninterruptle power supplies PCB design -Schematic design by Altium -PCB design by Altium -Power board design -SMPS board design Embedded system -PIC18,PIC24,PIC30 and dsPIC applications -Ardino -MSP430 -Atmel -DSP(Texas Instruments) -Renesas Matlab -Power Electronics simulation -Motor drive -Wind Energy -Solar Energy -Control applications Simulation of Hardware -Orcad Simulation(TI,National, Linear Tech, Maxim libraries) -LTI -National -Matlab Very important Note: References attached. Please look excel file to see projects which we made until now! Metin

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