Hi David D,
Thanks for bringing the National presentation to our attention. I found the original script associated with the slides on line. Slide 32 explains the reasoning beind the bias current compensation for the transimpedance amplifier. It appears…
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, and…
Thanks a lot, much appreciate it.
AC zero_crossing.TSC
Kindly review the circuit.
VG1, VG2, VG3 values vary from 0.5V ~ 3V.
VG4, VG5, VG6 are 100mV, 10Khz noise source.
Let me explain what has evolved since then, the actual circuit board has parts till…
Also I'm using a similar circuit for detecting zero crossing on the ac side, 3phase 3-wire (delta) connection.
Let me give you a brief about that circuit. I'm expecting review of the circuit and circuit explanation.
3073.AC zero_crossing.TSC
…
Other Parts Discussed in Thread: OPA381 , OPA380 I am seeing a high frequency ripple riding on my 25khz signal which I cannot account for adding a small feedback cap helps but also attenuates the signal .looking for a solution that addresses both issues…
Other Parts Discussed in Thread: OPA381 , THS4531 I'm using an OPA381 to provide trans-impedance gain from a photodiode. The voltage output from this stage drives a single pole low-pass filter realized via a THS4531 which is also performing single-ended…
Other Parts Discussed in Thread: OPA381 Hi,
First, happy new year!! (if it's still the right time)
Second, I m currently working with an OPA381. I tried to use TINA_spice but I missing a parameter. On page 7, There is a current source as input of…
Other Parts Discussed in Thread: OPA381 , OPA350 , OPA340 , OPA380 Hi,
I would like to create a courent source which could provide 25 mA as constant output current. I read the datasheet(OPA381) and it says that the current typ is 10 mA. I couldn't find how…
Other Parts Discussed in Thread: OPA381 Dear Ti team,
I need a low noise transimpedance amplifier, and I figured the OPA381 was a good choice since it has a low input noise and a linear phase (both are critical). But now I need to make a noise measurement…
Other Parts Discussed in Thread: OPA381 , OPA380 Team,
Can you please assist me with the following OPA381 stability question that came from JDSU?
Please read customer's comments for details.
"In the OPA381 data sheets, I read the max cap, which is…
