Part Number: THS4601
Hello team.
I'm unable to make a decision.
Do I need to insert resistor(3pin-GND) for canseling bias current(2pin) about curcuit to detect photodiode current(likes fig26) ?
If I need to insert it, How do I estimate the impedance of a photodiode. ( (Vf / If) // capacitance?)
Thank you.
Part Number: INA193
Hi,
I download INA193 spice model form TI, I am using same TI example, I changed Input, Load, current sense resistor and Vin voltage as per my requirement.
Vin 28V= sin input, Load is 10A, I observed from 1A to 15A load, Vout is not changing it is just 4.5 V and at 20A it is 8V.
Can you please tell simulation is working or not? I am missing anything to do simulation.
Here i am attaching my simulation zip, In that page 3 for sin input waveform and page1 is TI example.
(Please visit the site to view this file)
Part Number: LMC6042
Dear Sirs,
I want to use a LMC6042 as a pH probe front end differential input buffer amp power from a +/-5V power supply. Is this
IC work with a +/-5V power supply with signal GND connect to 0V, and -V (pin 4) connect to -5V of the power system ?
Many thanks for your reply.
Regards,
Anderson
Part Number: TLV2371
Hi Sir
Could you help to share ESD HBM/CD/MM data? Since I can't find it in spec.
Thanks for your great support.
Part Number: INA199
Hi team,
My customer is using INA199A1 for their new project.
But the output is not precise.
Here is the operating condition:
1. I=1.5A
2. Rshunt=8 m ohm
3. voltage over Rshunt=12mV
4. The output of INA199A1=560mV
What will cause the unexpected gain error?
Could you provide the solution?
Thanks!
Jamie
Part Number: THS4130
Hello team,
My customer have a simple question about THS4130.
He would like to use THS4130 as the following input.
VCC+ = +5V
VCC- = -3.5V
VOCM = 1.3V
He designed like Figure 41. in the datasheet, however the middle voltage of output is not 1.3V. He saw 0.9V at the output.
Is it correct behavior? If not, I will ask the customer to provide with schematics.
Are there any limitation when VCC+=5V and VCC-=-3.5V?
Would you please advise me?
Best Regards,
Akihisa Tamazaki
Part Number: LM324
Tool/software: WEBENCH® Design Tools
I used TINA to simulate the noise of the LM324. The circuit diagram and noise waveform are shown below：
This is different from the noise waveform I usually see. If I use other op amps like TLV9062, the waveform will become normal.
The TLV9062 noise waveform are shown below：
Is the internal structure of LM324 causing this difference? Can you explain it to me?
Part Number: THS4151
hi,
we are designing the amplier for the voltage measurement circuit. AMC1300 is used as isolation amplifier for voltage measurement. Its output is given to THS4131.
we are facing noise in the amplifier output and the noise signals are in the range of +/-12V. we are guessing that these noise are added into the circuit due to THS4131.
we are trying to add the low pass butterworth filter at the amplifier output as shown in the circtuit below.
Input voltage to AMC1300 : 75mV
Output voltage from AMC1300 : 615mV
R1 : 402 Ohm
R2 : 4020 Ohm
gain : 10
signal frequency : 15kHz
we ignored the filter components R3, C1,C2, R4 and C3. we are facing +/-10V noise signal in our output.
Please guide us to select the values for R3, C1, C2, R4 and C3.
Thanking you.
Thanks & regards,
Rajasekaran.
(Please visit the site to view this file)
(Please visit the site to view this file)
Part Number: OPA197
Hello,
OPA197 datasheet only appears to specify input offset voltage (Vos) at 25deg.C.
Please advise Vos spec. between 0deg.C to 85deg.C as well as at -20deg.C for operation at Vs = +/-18V across the entire common mode voltage range.
Does Vos increase or decrease with temperature?
Regards,
Nitish Agrawal
Part Number: OPA858
Hello,
I am using TINA-TI for simulating my circuit and have a question regarding the OPA858 model.
Does the model include the inut capacitance or do I have to include it in my circuit using an additional capacitor?
Thank you in advance,
Sonja
Hi TI,
I am using TLV1702AIDGK in my design. The design is intended for current and voltage measurement. And I use this chip for over voltage/over current protection.
Unfortunately it is out of stock. What do you recommend for replacement which has a low response time.
Thanks
Hi team,
What is the ESD CDM rating of LMC7211BIM5/NOPB? Is it correct that the ESD HBM is 2kV?
Regards,
Carlo
Hi, support team
My customer has the questions as follow:
I am looking for an opamp which has high input bandwidth
used with a gas sensor, which has 60nA to 0.2mA output current
need to scale to 0v to 3.3v
Would you please recommend any parts?
and we are trying to make transimpedance amp for the same
but input bandwidth is more for my application
Thanks so much.
Best regards,
Yuki
Hi Team,
I would like to ask about common-mode voltage range of TLV2462.
The datasheet shows common-mode voltage range in Recommended operating conditions as the following.
On the other hand, TLV9062 datasheet shows common-mode voltage range in Electrical Characteristics.
Is it okay to think that both have the same meaning?
If the answer is no, I would like to know common-mode voltage range of Electrical Characteristics for TLV2462.
Best Regards,
Yaita
1. The model of LM358DRG4 can be found on the official website, but the relevant parameter description is not found in the manual of LM358;
2. Is the precision of LM358DRG4, LM358BAIDR, LM2904BAIDR the same? What was the difference before?
Hi Experts,
Good day. We have this case from client where they found out that the input current of OPA145 is very high when simulated thru PSpice.
See their full input query below:
"The input current to this op amp in the below circuit is nearly equal to the source current--this shouldn't be the case given that the input impedance is 10^13 ohms. Is the model bad? I am using the texas instruments op-amp library in PSpice(with attachments)"
I would like to ask your confirmation on this as we've no PSpice tool on our current engagement to support this query. Based on his circuit, it seems that he wanted to configure an AC integrator op-amp. But because he directly connected the AC signal to inverting input, it looks like they are virtually connected with grounded non-inverting pins.
Any thoughts and confirmation on this?
Regards,
Archie A.
