Hi Marek,
I am definitely connecting +V to +12v and -V to GND (0v) so there should be no confusion on this.
I was originally connecting +12v thru a 402k resistor to the E/S pin.
In your initial email you advised me that this superceded the +5v maximum…
Hi Nikhlil,
Here is a list of our amplifiers with >1A output current: https://www.ti.com/amplifier-circuit/op-amps/products.html#p233typ=1000;10000
Take a look at the OPA561, figure 10 shows a laser diode driver: https://www.ti.com/lit/ds/symlink/opa561…
Other Parts Discussed in Thread: OPA561 Hello, team.
My customer has strong concern about connection of thermal pad (PowerPAD) of OPA561. These are some descriptions on this on data sheet, but those don't agree. Could you help us deal with it?
…
Need some more details to do an analysis to diagnose your problem.
1) is the part heatsinked in any way? Power Pad soldered down to a PCB? How big is plane soldered to and what oz of CU on PCB plane? What is exact Impedance of load? L value? R Value…
Hello Andreas,
Thank you for the very complete information regarding your OPA564 application. I am not finding anything about the way you are applying the device that would explain why they are dying over time. I have a few more questions that could help…
Other Parts Discussed in Thread: OPA561 , AFE032 HI
we developing new PLC communication module.
we have use high power OP-AMP OPA561 for transmission control . i successfully communicate full duplex mode on only few meters like (10meter) i have…
Hi Shekhar,
I suggest using the Improved Howland Current Pump with a power operational amplifier; the OPA561,or OPA567. The application not only calls for high current, but fairly high bandwidth to support the 100 kHz requirement.
I have attached a schematic…
Hello Kyungpyo,
The subject of an ac current source has been discussed several times here on the Precison Amplifiers E2E forum. The most commonly applied circuit is an Improved Howland Current Pump. If you use the "Search Community" box and type in "Howland…
Hello,
Thank you for sharing your OPA569 schematic. We do observe that R SET has been changed from the original 475 Ohms used in the TI Precision Design circuit. The input compensation consisting of Rc and Cc were established based on the original R SE…
Hello Ali,
There is a possibilty that the OPA544, or OPA548, could handle this application. They should be able to provide the output current and their slew rate is high enough to support a 100 kHz, 5 Vp-p signal. My main concern is their open-loop gain…