Wow, thank you so much. I will test this sometime in the next two days.
A couple questions:
1) What's the difference between the two? Is there a reason one would chose the circuitry with 2 opamps or is it just a matter of preference?
2) The pot in the bottom diagram. What's the value of the...
I apologize for my vague answers. Ideally, I need an output of 0(lower limit) to 3.5 V (higher limit).
(The reason for this is I am inputing this into an arduino digital input which reads a low as below 2V and a high as above 3V)
1) I am using a 5 V power supply from a pin on my arduino.
2)...
My source is a red light (like a traffic light) from 45 ft away. I have a 75k feedback resistor that I chose through testing. It appeared that I got the largest gain out of the TIA before attenuation when the resistor was ~75k Ohms
The DC output level of the TIA is at 1mV. The AC output is from that 0uV to 200uV.
So output of TIA = 1mV(1mV+0uV)(lower limit) to 1.2mV(1mV+200uV)(higher limit).
I need the output of the amplifier lower limit to be below 2V and the higher limit above 3V.
Well here's the basic idea. Take in an optical AC signal into a photodiode, use a TIA to get a corresponding voltage. Projected output range of the TIA is from 0-200uV at 1kHz.
I want to amplify this AC signal to have (at minimum) a 2 Volt swing between 1.5 V and 2.5 V. These high and lows...
Howdy, I'm using the opa2350 op amp to amplify a <1mV signal by 2000. The problem is I want to have a greater gain (either second stage or larger feedback resistor) however the DC level is reaching too high so that it reaches over 2 V, and I need it under 2 V in order for a digital read into an...