Part Number: THS4631 Our design uses THS4631D Op-Amps.
In two of the instances of the unity gain configurations, the output is oscillating.
Output is connected to a trace of < 100pF (10”) which is not terminated at the far end. The far end is connected…
Part Number: THS4631 Other Parts Discussed in Thread: TINA-TI Hello,
I am using the THS4631 configured as a differential amplifier with very low gain = 1/40 = 0.025 and high resistance values, which might be the cause of the oscillation I am seeing.
…
Part Number: THS4631
Hello Support team,
I want to know more detail regarding below post.
THS4631 input bias current - Amplifiers forum - Amplifiers - TI E2E support forums
I've built a circuit similar to the one in the previous question.
I'm attaching…
Hello Support team,
Please tell me more.
The net current that increases with the frequency of the AC signal applied to the input terminal of the THS4631 is the "AC" current, right? Why does the [DC] bias current also increase?
(1) Increase the…
Hi Tatarao,
a DVM can show a huge input capacitance destabilizing the THS4631 by too high capacitive output loading. This is often overlooked when connecting a DVM directly to the output of OPAmp without introducing a suited isolation resistor. Usually…
Part Number: THS4631 Other Parts Discussed in Thread: OPA810 , OPA857 , LMH32401 Hi sir,
I have a technical problem on ths4631.
when testing the output port, the difference between the test value of 1us and that of 51us is 14uv. How to modify the circuit…
Part Number: THS4631 Other Parts Discussed in Thread: TINA-TI , , OPA320 , LMP7718 , OPA838 Hello,
I connected the DUT to the network analyzer (Agilent 4395A). The configuration is shown below.
The bodeplot of the DUT, connected to the VNA, is shown bel…
Part Number: THS4631
Dear Ti expert,
I consulted you a problem about the configuration of peak detector several months ago.
e2e.ti.com/.../940064
I followed the circuit shown by Kai in the thread above, and it worked perfectly.
When I remove the R3…
Part Number: THS4631 Other Parts Discussed in Thread: OPA810 , , OPA656 Hi Experts,
There are several explanation about recommended decoupling capacitor for Vs on the datasheet.
P14: Minimize the distance (< 0.25”) from the power matched impedance transmission…