Hello Errol,
thanks for your answer. I was using a datasheet from Farnell, which doesn't include this page.
The OPA2137 seems to be an appropriate candidate, though I wished a wider temperature range - would you know another alternative here? The…
Hi Glenn,
Adding the pull-down resistor will allow the output to swing lower (bypassing the negative stage and basically running the output class A), but you will then sacrifice positive swing as you are now constantly sourcing current from the upper…
Hi Yu Cai,
First of all, sorry for the delay, I have not seen your question before.
Well I'm using in my circuit a LM6132 Operational Amplifier for make a OFFSET signal.
But I don't know if you have the same needs than I.
I need to use…
Hi Marceli,
the output current of XTR111 must be limited to less than 50mA or you risk that the XTR111 becomes damaged. The XTR111 is not designed to output a current of 100mA.
I would think about using the improved Howland current pump:
3835.snoa474a…
Part Number: OPA547 Other Parts Discussed in Thread: TINA-TI Team,
We are using the OPA547 for an "improved Howland current pump" to turn voltage to a 0–20 mA output.
It works ok until a given input voltage level. When this input voltage is reached…
Hi Faisal,
A complete discussion of the Improved Howland Current Pump is covered in TI Application Report, SNOA474 (AN-1515), A Comprehensive Study of the Howland Current Pump. That should answer most any question you may have about the fundamentals…
