photodiode

I'm using LTC6268-10 to build a ~200MHz TIA (Transimpedance amplifier) Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/626810f.pdf Here is the schematic: The frequency response I get: I expect the bandwidth to only roll off at 250MHz, why does it fall to -3dB...

The schematic shows 2 transimpedance amplifier circuits on the first stage, for reference and sample photodiodes. The outputs are then connected to sallen-key butterworth circuits for low pass filtering. The output of these 2 are then connected to a differential amplifier to obtain its...

Hi, I am an electronics noob. I have some questions regarding a particular application. I have to move a small cylindrical rod using a solenoid (whose capacity is 1.5kg lifting force and rated at 12V). My application requires me to energize the solenoid only when I get a signal from somewhere...

Hello, I am trying to follow the recommended circuit diagram of the photodiode I am using, as specified by its manual. Does the circuit below match the one in the diagram?

edit: I'm trying to study about a transimpedance amplifier (TIA). I'm using LTC6268-10 op-amp configured as TIA. I'm using it to get power readings from a 1310nm photodiode, which I'm reverse biasing it in TIA. Datasheet of op-amp I'm using: link...

Hi, I am working on a problem with detecting a reflected IR signal. I have a TX IR LED that sends light at 32 kHz frequency. If something is in front of the diode (reflectimg surface), some light bounces back. Next to the TX LED, I have an RX LED to catch this bounced light. I want to catch this...

I'm having trouble finding a theoretical explanation about the transconductance photodiode behavior, the materials I find on the internet they talk about the connections, but not the behavior, in case someone could insert material or write here with the source please.

Hi, I created simple circuit with photodiode for pulse oximeter. As you can see I use opamp in single supply mode. After removing DC offset I put 1V offset on non-inverting input on opamp. Then RC filter is connected to grond. Is everyting correct? I wonder if I should connect REF on ADC to...

Greetings, I am stuck in finding the component as shown in the picture attached. This component is used in photodiode circuits. I am a software engineer that has basic electronic knowledge and needs to make integrate the circuit so that I can view all the light values on my application. I hope...

Hello, I am hoping that someone will be able to direct me towards the appropriate piece of hardware to purchase. I am a cognitive neuroscientist, hoping to stimulate a specific area of the brain using Transcranial Magnetic Stimulation. The onset of stimulation needs to be precise (~100ms) and...

Hello, My name is Dragos.I am beginner in simulation S.P.I.C.E.. and I use the simulator Micro-CAP 12, to simulate an electric schematic. I want to simulate the photodiode PIN InGaAs IG17-series,here I used an an electric equivalent model of working of photodiode and I want to monitor...

Hello, My name is Dragos.I am beginner in simulation S.P.I.C.E.. and I use the simulator Micro-CAP 12, to simulate an electric schematic. I want to simulate the phototransistor PIN InGaAs IG17-series and to monitor grafically the rectangular electrical impulse, at an amplitude of a few volts...

I am a beginner PSPICE, in simulation electrical and electronics circuits. I want to simulate a schematic with the program Micro-CAP 12. I want to look for some graphics from a photodiode PIN which is a InGaAs Photodiode IG22-Series, I want to monitor follow parameters: responsivity (A/W) vs...

Hello everyone, I am currently working in a photodiode circuit which creates AC voltage -280mV to +80mV. I need to amplify the circuit using transimpedance amplifier. The output voltage range must be ±10V. How to select a suitable OPamp for this purpose? What factors must be considered? How is...