Part Number: OPA381 Hi,
I am trying to detect the DLP white Pulse through photodiode (#PD438C/S46) but DLP signals are not detected when ambient light is ON.
Here is the circuit that i am using
Here is graph when t he input data is in black/green…
Vladimir,
You are correct that OPA381 datasheet large-signal horizontal scale should be in 1us/div instead of 100ns/div. This can be easily seen by measuring the slew rate in the graph below, which would result in ~120V/us instead of 12V/us - changing…
Part Number: OPA381 Referencing a circuit like that in Figure 3 of the OPA381 datasheet, is there any reason I cannot tie the anode of the photodiode to a -10V bias instead of ground? I understand I will have a higher dark current but I need to lower…
Part Number: OPA381 Other Parts Discussed in Thread: INA381 Hi team,
A customer wants to use the input of OPA381 for overload detection and would like to delay it with an RC filter (switch-on pulses etc). For that they would like to know how much current…
Part Number: OPA381 Other Parts Discussed in Thread: LM7705 Support Path: /Product/Help with Device Selection/ Sometimes ago I used OPA381 as Transimpedance Ampli for OSRAM PD BPW34. I like an option of OPA381 "swing to ground" by ext. resistor.
Have…
Hi Alex,
the advantage of the OPA381 is the ultra low input offset voltage. Do you need this at all? If not, you could take any other OPAmp as transimpedance amplifier.
What are the parameters of your application? Bandwidth, range of photocurrent…
Part Number: OPA381 Hi!
I'm trying to make some optical head with diode laser and OPA381 trans-impedance amplifier. Parameters of laser diode direct me to use 6v supply.
Is it safe to apply it to OPA381 without any sufficient degradation of its parameters…
Hi Jim,
Glad I could help resolve this OPA381 application. And thanks to Kai for his inputs!
I'll close this one out.
Regards, Thomas
Precision Amplifiers Applications Engineering
Hi David,
This is a bit outside the applications realm, but I will try to help. I suppose the production board test depends on what you have available. It would seem that if a 2 kHz bandwith with a specific transimpedance gain ( 20 kV/A) is the goal…
Other Parts Discussed in Thread: OPA381 Hello,
I am using the OPA381 to build a transimpedance amplifier for a calibrated photodiode from Thorlabs. The signal I am measuring is currently 1 kHz, but I may need to measure something as fast as 10 kHz,…
