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LM2X0X-CALC: LM2901 TINA Ti Simulation part not available.

Mehul Sathwara — Mon, 01 Jun 2026 11:28:44 GMT

Part Number: LM2X0X-CALC

Dear sir,

Please TINA Ti simulation model of LM2901 IC.

RE: LM2X0X-CALC: LM2901 TINA Ti Simulation part not available.

Amy Wozniak — Tue, 02 Jun 2026 18:15:50 GMT

Hi Mehul,

You can find the TINA TI model in the Design and Development tab found on the product page.

Best,

Amy

OPA2333-HT: datasheet parameters for Vos and IB does not match my test measurement

nader niakan — Thu, 28 May 2026 00:05:52 GMT

Part Number: OPA2333-HT

Hi,

I am trying to verify datasheet parameters of OPA2333SHKJ. I have used negative feedback with 100 gain to measure the output of the op amp due to Vos and IB. Per my calcualtions and using the datasheet data for Vos and Ib at Room Temp, my Vout should come to 0.207 mV. However, my measurement shows about 3.5 mV ! Vout increases to 4.8 mV, when the unit is heated to 200C, which is ok. The only problem I have is that my test measure at Room (3.5 mV) shows way higher when I calculate output, based on datasheet parameters. Can somebody please help me understand ? Thanks

RE: OPA2333-HT: datasheet parameters for Vos and IB does not match my test measurement

nader niakan — Tue, 02 Jun 2026 17:46:58 GMT

Hi Ron,

This is the circuit I used for OPA211-HT. As I said above, when -1.8VDC (with 2 mVPP on top of DC) was applied to the VCC, I get my output fluctuate between -1 mV to 1 mV. As soon as change -1.9 VDC or -1.7 VDC, the output becomes 6 or 9 mV. Not sure why ? When I replaced SIG GEN with a DC power supply and apply -1.8 VDC to VCC, my output goes to 1V or more, and increases or decreases depending on how much I change the VCC, but never get in the vicinity of mVDC ! If VCC is connected to common GND, the output becomes around 6 mVDC. These are my observations. Do you have any idea what is going on with my tests ? Supposed to be simple tests ! Thanks

TLV2371: Output voltage vs output current graph for the Vdd 9V

Jayjit Yadav — Tue, 02 Jun 2026 13:00:54 GMT

Part Number: TLV2371

Hello Team,

i am driving the mosfet with opamp in constant current source i need to select the series resistor for the input of the opamp. 1uF capacitor is added at the output of the opamp to reduce the oscillation and for stability between the gate and source of the Mosfet, i need to check the voltage drop at the output of the opamp. is it possible for you to provide the Graph for output voltage vs the output current graph for VDD=9V ?

RE: TLV2371: Output voltage vs output current graph for the Vdd 9V

Alex Curtis — Tue, 02 Jun 2026 17:43:24 GMT

Hi Jayjit,

Could you provide a schematic of the circuit?

Best,

Alex Curtis

TPS54360B-Q1: There is sudden in-rush current not powering up the amplifier

Partha Sarathi — Tue, 02 Jun 2026 17:40:56 GMT

Part Number: TPS54360B-Q1

Hello,
We are currently using TPS54360B-Q1 regulator and TAS5760MTDAPRQ1 amplifier. Due to sudden in-rush current, the regulator is not able to power up amplifier properly. Can you please help ?Circuit.docx

TLV1922: OSFP host INT/RSTn and LPWn/PRSn solution

li xueqiang — Mon, 01 Jun 2026 06:18:40 GMT

Part Number: TLV1922

Hello, I came across a post where someone asked about OSFP host-side applications, and there was a reply stating: 'the TLV1922 dual comparator with integrated 2.5V reference, but that device will most likely not work for the OSFP host side since that device is not rail-to-rail input.'

Does this mean that using the internal 2.5V reference directly would cause the input to exceed the common-mode voltage range ((V+) - 2V)? I am planning to use a 5V VCC supply, which should give me an input common-mode voltage limit of 3V. Currently, I intend to compare 3.3V against 2.5V at the input. Even though it exceeds the limit slightly, is there a risk of comparison failure? Is it safe to use it this way? If it is acceptable, could you please also help check if the connection in the attached diagram is correct?"

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1475723/tlv4062-osfp-host-int-rstn-and-lpwn-prsn-solution

RE: TLV1922: OSFP host INT/RSTn and LPWn/PRSn solution

Paul Grohe — Tue, 02 Jun 2026 17:36:22 GMT

Hi Li,

Ho recommended the TLV1922 for the 2.5V built-in reference. But the TLV1922 is designed for high-voltage applications and has VCC-2V input voltage limitation. So the maximum input voltage on a 3.3V supply would be 3.3V - 2V = 1.3V max.

For a 3.3V supply, a low voltage comparator is recommended.

We do have other low voltage comparators with built-in references, but none with 2.5V refernce.

See the TLV406x family, this family has different reference voltages, polarity configurations and output types.

https://www.ti.com/product/TLV4062

We cannot discuss future products in the public forums. Do you mind if marketing reaches out to you at your registered email address to discuss future developments for host side devices.

TLC272: Inquiry Regarding Input Protection Circuit of TLC272CPWR

Kyohei — Tue, 02 Jun 2026 08:11:08 GMT

Part Number: TLC272

Hi team,

(+) TLC272: Inquiry Regarding Input Protection Circuit of TLC272CPWR - Amplifiers forum - Amplifiers - TI E2E support forums

I have an additional question regarding the above post.

I believe you previously advised reducing the input resistance from the current 100 kohm to 10 kohm as a countermeasure to reduce leakage current. However, since the leakage current can be expressed as (V+ − Vf) / Rin, I think that increasing Rin from the current 100 kohm would be necessary to reduce the leakage. Is my understanding incorrect?

Best regards,

Kyohei

RE: TLC272: Inquiry Regarding Input Protection Circuit of TLC272CPWR

Carrie — Tue, 02 Jun 2026 17:17:40 GMT

Hi Kyohei,

The large resistor in series with the op amp creates an equivalent VOS error to your circuit (see example below). We recommend keeping input resistors relatively small due to the following reasons:

1. DC Offset from Bias Current: The op-amp's input bias current flows through that resistor and creates a DC offset voltage (V_offset = I_bias × R).

2. Increased Noise: Thermal noise scales with √R — a larger resistor generates more Johnson-Nyquist noise voltage (Vn = √(4kTRB)). Current noise from the op-amp's input bias current (shot noise) converts to voltage noise across the resistor.

3. Stability and Bandwidth Issues: Large resistor values interact with parasitic capacitance (PCB traces, input pin capacitance) to form unwanted low-frequency poles, causing instability. High source impedance reduces the differential input voltage (V_ID) available to charge the internal compensation capacitor, resulting in slower-than-expected slew rate.

Are you still experiencing a large leakage current with the 100kohm resistor?

Best,
Carrie

RE: OPA2333-HT: datasheet parameters for Vos and IB does not match my test measurement

Ron Michallick — Tue, 02 Jun 2026 16:36:37 GMT

Nader,

In my schematic, multimeter is not grounded at ground. It is IN+ pin. This is to remove ground shift affects. Details matter when microvolts are important.

RE: USB2ANY: USB2ANY firmware fails to update

Dustin Henderson — Tue, 02 Jun 2026 16:35:43 GMT

Is there any chance we can get it to work on Windows 11? I do not have access to a windows 10 PC. I have tried:

• Windows 11
• USB2.0 port -> USB2ANY
• The USB2ANY serial/SPI interface is disconnected
• USB2ANY explorer run as administrator
• The USB2ANY enumerates in windows as an HID device

USB2ANY: USB2ANY firmware fails to update

Dustin Henderson — Thu, 28 May 2026 20:52:28 GMT

Part Number: USB2ANY

I always get the error below when I try to update the USB2ANY firmware. I have tried both the TICS Pro tool and the USB2ANY explorer tool.

REF35-Q1: REF power

nobuyuki sakai — Tue, 02 Jun 2026 07:30:41 GMT

Part Number: REF35-Q1

Are there any REF power supplies that have a
negative voltage output ?

RE: REF35-Q1: REF power

Jackson Wightman — Tue, 02 Jun 2026 16:10:06 GMT

I will second the above and also add this example from the REF35 datasheet showing how to generate a negative reference voltage:

Please let me know if there are any additional questions.

Thanks,

Jackson

TLV3602: Comparator

DRUILHE yvan — Tue, 02 Jun 2026 15:46:33 GMT

Part Number: TLV3602

Hello,

As a replacement for the MAX901 comparator, you are recommending the TLV3602. This component is not equivalent.
I would like to power the comparator between +5.2V and -5.2V and have separate analog and digital supplies (5VL and ground) at the output.
Propagation time: 8 ns or better
Thank you for your help

OPA814: simulate gain stability for ninv opamp

Dennis Brown — Tue, 26 May 2026 19:16:08 GMT

Part Number: OPA814

I have a design that uses the OPA814 configured as a unity gain buffer but it wants to oscillate when the feedback resistor is a 0 ohm short (the other resistor to ground being an open). It will stop oscillating once a 50ohm resistor is installed in the feedback. Seems there is limited phase margin here but I would like to know more about the analysis from tina. In tina, how does one simulate open loop stability or closed loop stability for an opamp configured in a noninverting format? Would like to see gain (dB) and phase margin (deg). Closed loop gain/phase is easier as this is what is in my tina file attached. There is nothing obviously wrong in closed loop format here to me.

There are a couple videos on the TI website that show similar concepts but not necessarily like this problem. If you have a link to something similar please post it. For the record the attached file does not show any sort of oscillation but I just want to know how to extract out gain/phase information under AC analysis so I have a better grasp on the problem.

OPA814_TINA_stability.TSC

RE: OPA814: simulate gain stability for ninv opamp

Dennis Brown — Tue, 02 Jun 2026 15:28:04 GMT

Hi Ignacio,

I would like to ask follow up questions:

There is the OPA814 reference design for tina. The circuit is configured like this:

The overall gain here should be Av = (1+ 250/250) or Av = 2, or 6.02dB

When I simulate this under closed loop conditions I don't get 6.02dB but instead the plot shows 2dB. Can you verify?

While this is a close loop simulation I do see that the phase of the signal is heading down towards -180deg. Is this a problem?

In the green box I note that the overall gain is heading towards 0 dB but the phase is also decreasing. It just seems like this model suggests that this could be unstable as it exists but this is what i am trying to determine. Mainly looking for mitigations to help this circuit. I do have provisions on my circuit board for a parallel RC at the input and parallel RC in the feedback path from out to inv pin.

INA828: Slow amplitude oscillation at the INA828 Output

Danny Vilensky — Mon, 11 May 2026 12:28:46 GMT

Part Number: INA828

Hello,

i am trying to design an circuit which needs to sample a 50Hz signal, at very low voltages 10[mV] - 5V peak.

This is the tested design:

In this configuration i get a very high THD and slow amplitude oscillation at the INA output.

I can only improve that by lowering the values of R776 and R780 to 10k, but then i barley can measure voltages around 50[mV] because of the voltage devider which decrease the input voltage by 1/52.

What changes can i make to enable me measuring down to 10[mV].

Thank you

RE: INA828: Slow amplitude oscillation at the INA828 Output

Robert Clifton56 — Tue, 02 Jun 2026 14:30:10 GMT

Hi Danny,

Just to properly confirm, I've attached the newest version of it now. I made the changes that you requested. I also set the input to be centered at 0V for its common mode.

e2e.ti.com/.../6428.INA828-Slow-amplitude-Oscillation.TSC

If it all looks good. I'll start testing this circuit!

Best Regards,

Robert Clifton

RE: INA333: Problem with gain

Robert Clifton56 — Tue, 02 Jun 2026 14:19:32 GMT

Hi Pierre,

[quote userid="701647" url="~/support/amplifiers-group/amplifiers/f/amplifiers-forum/1650118/ina333-problem-with-gain/6366958"]I must to let Vin- pin like my scheme.[/quote]

I'm not sure what exactly you mean by this but here's the results that I got with Tina-TI simulation:

e2e.ti.com/.../INA333-Gain-problem.TSC

Please note that the TINA-TI model doesn't have as robust of a boundary plot as the analog engineer calculator tool. That's why I recommend testing in the tool for boundary related concerns.

Best Regards,

Robert Clifton

INA333: Problem with gain

Pierre Belmonte — Thu, 28 May 2026 06:25:32 GMT

Part Number: INA333

Hello,

I use an INA333 with V+=3V,3 V-=0V, Rg=NC and Vref=0V

Vin+ and Vin- are connected to a shunt wich is isolated of the 0V

The output at Vout pin is not correct

Point 1 : Vin+ - Vin- = 0,6V and Vout = 0,4V instead of 0,6V waited

Point 2 : Vin+ - Vin- = 3,0V and Vout = 2,75V instead of 3,0V waited

INA105: Datasheet / website shows MSL3 but physical label received is MSL1.

Wen Sing Law — Tue, 02 Jun 2026 02:30:40 GMT

Part Number: INA105

Datasheet / website shows MSL3 but physical label received is MSL1.

Pls check & confirm.

RE: INA105: Datasheet / website shows MSL3 but physical label received is MSL1.

Robert Clifton56 — Tue, 02 Jun 2026 13:55:49 GMT

Hi Wen,

Clemens is correct. With different flows, we make sure to always advertise the "worst case".

Best Regards,

Robert Clifton