that problem do you have with any other CMOS-OPAmp as well and from any other manufacturer.
The datasheet of TLC272 contains a useful information:
"Because CMOS devices are susceptible to latch-up due to their inherent parasitic thyristors…
Thanks for your prompt reply. I use TI part number : UCC2895, UCC27324, TLC272, TLC393 . . .
These are waveforms :
Vmain_trafo = primary voltage waveform
Vsec_trafo I = secondary voltage waveform (measured direct to the secondary winding)
The TLC272 and TLC2272 operational amplifiers are similar in their amplifier circuit design, but do have different input ESD structures. I recently checked the TLC272 on the bench and it does not have an ESD protection diode to the V+ rail.…
Other Parts Discussed in Thread: TLC272 I am using the tlc272 for offset and amplification purpose.
at 1st i am using 5v, the signal is linear.
but after i change the vcc to 10v,
the signal not longer linear.
help and advice needed.
Other Parts Discussed in Thread: TLC272 i am using the tlc272 to make an instrumentation amplifier,
the resistors i used are all same value which is 91k,
when i measure the Vout and ground.
I get impedance around 645k ohm.
does this normal?
First, have you looked at the input pins, supply voltage, and reference voltage pins on an o-scope? If so, can you please post the waveforms?
From here I recommend isolating and testing the INA331 by doing the following:
1) Remove R1,…
Other Parts Discussed in Thread: TLC272 , TINA-TI i am using the tlc272,
i was trying to gain it using the 1st amplifier, then offset it using the 2nd amplifier.
the 1st amplifier work good.
for the 2nd amplifier (use for offset), i use voltage divider…
Those were the lowest cost devices for DIP R-R input devices. R-R devices are going to cost a little more.
The LF353 is a 30 year old device. DIP packages are going the way of the dinosaur - so requiring DIP package is limiting your choices…