Other Parts Discussed in Thread: INA827, INA331, INA145, INA122, INA126, INA321, , INA500, RES11A, INA597, OPA317
Hi,
is it possible (even not recommended) to change the gain?
Regards, Holger
Hello Team, I am unable to access the PSpice model for the mentioned manufacture part number OPA317IDBVR (Zero-Drift Amplifier 1 Circuit Rail-to-Rail SOT-23-5), it would be appreciated if the model is available let me know the location or site from where…
The PSpice for OPA317IDBVR is not available or if in case it is there I am unable to get access to that particular file... It is needed for simulation purpose, could you please provide me with the PSpice model...
Thank you Marek for the detailed analysis and Simulation results.
Margin on both side voltage railing is OK for my application.
In first circuit, resistor was missed when I did some edit in the original circuit to post here. Will keep that resistor.
…Anil,
Your top circuit will not work - you need to add an input resistor to place the amplifier in an inverting configuration - see below.
Keep in mind that since the linear output range of OPA317is defined within 100mV of either rail (see table below…
Ambroise.
The closest to CA3420 would be OPA196 with min +/-2.25V supplies or OPA170 with min +/-1.35V supplies. But if you must operate on +/-1V supplies, you may consider OPA317 or OPA313.
Hi Arumugam,
I see that you have also been discussing the op amp circuit with Luis in the amplifier E2E. Similar to what Luis has done I created a TINA simulation of the circuit you are using along with the 1k/100nF input filter and I don't see any oscillation…
Hi Arumugam,
The OPA317 or LMC6082 should work in the RTD measurement application; however, I have questions about the amplifier used in the inverting configuration and the RTD connections.
1) The schematic does not clearly show a DC path connection of…
Hi Arumugam,
Yes, the OPAx317 amplifiers offer very low offset and near zero offset drift without flicker noise due to the internal offset auto-calibration correction. Since your RTD signal of interest is very low frequency, and the ADS124S08 has relative…
hey Joe, I did a little more work on this with your OPA820 gain of 1 design, The attached spreadsheet breaks the calculation into pieces and step by step works towards the result - I get 76 ohms now.
I tried that in sim for the OPA820, and the output…
Hi Marek,
Yes, the input range is 0 to -200V, and I want t o covert to 0 to 4V. And the OPA317 is powered form a single supply(0,5V).
And the simulation shows that the circuit can achieve this function, right?
Thanks & Best Regards,
Sherry
Sherry,
There are several ways to implement such function but we need to know what is the exact range of the input/output signall you need? Is it 0 to -200V input that you want to convert to 0 to 4V output or something else? Also, OPA317 may be powered…
Hi Meng,
figure 20 shows the internal protection against high differential input voltages. But if the input signal exceeds the rails you need additional current limiting, as mentioned in sections 6.1 and 8.3.2 of datasheet. I see that you already have…
OPA317 is used in small signal amplification circuit. In the process of using OPA317, there will be Overdriven, IN + 5V.
1. Can the structure of the following pictures be understood as self protection of IC? Is there…
