Hi Kai,
It is still the same circuit but with other opamps( opa365, opa189) : https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1168359/opa277-opa188-oscillation-issue/4405577#4405577
Thanks,
Brian
Hi Francisco,
Good question. If I had to take a guess, I'd say it's related to the fact that the OPA277 was actually originally a Burr-Brown part. You can still find the old BB datasheet online with a little digging. The part would have been released…
Part Number: REF102 Other Parts Discussed in Thread: OPA277 , LM4132 , LM4140 , LM4040 , LM334 , LM4040-N , LM234 , INA121 , INA114 Hi
I need to design a current source of about 30 micro amps (UA)
it should be totaly stable max 0.1 % error
The 30…
Hi Rocky,
Rocky Chen said: Therefore, they wonder if there is any change happened on OPA2277 manufacturing. (There seems to be a PCN happened)
Yes, there was a PCN issued in OPA2277, where the GBW parameter has changed.
Rocky Chen said: 1) If above…
Part Number: OPA189 Other Parts Discussed in Thread: OPA277 , OPA2156 , OPA2197 , LMP7717 I'm looking into using the OPA189 for a transimpedance amplifier application. I'm comparing it to the OPA277 (which is what the design uses now). Looking at the…
Jerry,
Where do you see the problem? At the output of OPA277 or the input to Keysight 34461? If latter is the case, what do you use to gain up the signal by 10,000?
What you describe has the characteristics of burst noise also known as a popcorn noise…
Andrzej,
In order to help you, please include a full list of all your requirements. In the list below, you do not say anything about max offset voltage or noise so it is difficult to know what your actual requirements are. OPA277 is a bipolar input…
Hello Jejomar,
It looks like the commercial OPA4277 and Space OPA4277 datasheets have undergone some updates across the years and unfortunately some of the information listed gets a little out of sync. The input voltage noise density listed in the Electrical…
Part Number: DAC8820 Other Parts Discussed in Thread: TINA-TI , OPA2277 , OPA277 , Tool/software: TINA-TI or Spice Models I read through the DAC8820 pdf and Figure 42 describes a bipolar voltage generator (-10v to +10v). I transcribed this pdf in TINA…
