https://e2e.ti.com/support/amplifiers-group/amplifiers/Find answers, share knowledge, solve problems with fellow engineers.en-USTelligent Community 13https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690267/xtr110-clarification-on-temperature-range-of-xtr110ku-1kFri, 16 Oct 2026 08:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c129cdab-87ad-4fbf-b848-f6875f210208anjali sharmaPart Number: XTR110 Dear Texas Instruments Support Team, The XTR110 datasheet specifies the following temperature ranges for the KU package: Specification Temperature Range: 0°C to +70°C Operating Temperature Range: −25°C to +85°C However, your website lists the operating temperature range as −40°C to +85°C . Could you please clarify this discrepancy and confirm the valid operating temperature range for the XTR110KU/1K? Thank you for your support. https://www.ti.com/product/XTR110/part-details/XTR110KU/1KXTR110https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690260/amc0202d-psrr-over-1mhzFri, 16 Oct 2026 08:31:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6e1031e1-a779-4a8b-b654-ae132979ff81Hideki Hayashi1Part Number: AMC0202D Other Parts Discussed in Thread: UCC33420 Hi team, My customer uses AMC0202D with high-side supply of UCC33420. Customer is concerend about PSRR of AMC0202D because the ripple freuqnecy of UCC33420 are around 1MHz and switching freuquency is 64.5MHz, which customer observed at output in customer's board. Do you have any data about PSRR over 1MHz? Best regards, HayashiAMC0202DUCC33420https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690214/tl074h-tl074-tl074h-used-as-comparator-with-input-driven-by-another-tl074-at-negative-saturationFri, 16 Oct 2026 07:09:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c4315197-5e44-4b3c-8b7c-b6b96fde9ef3Ryu YamashitaPart Number: TL074H Other Parts Discussed in Thread: TL074 , TL072 , Hi team, Background: The attached circuit operates from ±15 V. The output at pin 1 of the first TL074 is directly connected to the input of another TL074 used as a comparator. The first TL074 can saturate toward the negative supply rail. For the legacy TL07x, the datasheet specifies VCM = ±11 V minimum at ±15 V supplies, while the output swing can extend beyond −11 V. Therefore, it appears possible for a valid output voltage of the first TL074 to violate the input common-mode range of the following TL074. Questions: For legacy TL074/TL074C, should this configuration be avoided if the first TL074 output can fall below −11 V and directly drive a comparator input? Can this condition cause abnormal supply/input current or device heating similar to the reported TL072 E2E case #732474, or is only incorrect output behavior expected? For TL074H specifically, what is the guaranteed negative-side input voltage range at ±15 V? Can its input safely be driven by the negative saturated output of another TL074? Best Regards, Ryu.Industrial AutomationTL074TL072TL074Hhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689189/lm358ba-need-right-product-selection-guide/6512825Fri, 16 Oct 2026 06:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a05fe6b5-8476-4038-8579-44ccbf15e5d1Aaditya V.Hi Naveen, Thank you for the additional details and clarification. I will be talking to my colleagues to make sure I can confirm and respond to you by Friday. Regards, Aadityahttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689850/ina260-pwm-input-compatibility/6512813Fri, 16 Oct 2026 05:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f013d0fa-2593-45c9-a0d4-bc10bbfdab67Jai VarmaHi Mallika, The INA260 is being used for inline current sensing and will not be directly exposed to PWM but I am modulating the voltage to get a lesser average voltage. The duty cycle can go from 40%-95% and the current can go to 3.5A(max inrush) and will vary over time slowly. The PWM frequency will be around 1KHz. Regards Jai Varmahttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690121/opa2391-rohs-certificateFri, 16 Oct 2026 01:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3f05be24-8786-466d-ada4-0c65edfb0a85user1009629Part Number: OPA2391 We have placed an order for this part (T07054761). We would like to request a RoHS compliance certificate (confirming the absence of restricted substances). Please provide it as an email attachment.OPA2391https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689004/opa928-root-causing-failed-opa928-in-tia-and-protecting-inputs-against-exceeding-absolute-maximum-ratings/6512596Fri, 16 Oct 2026 00:45:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1e382cd2-51cb-4546-a7ed-bd902ecb59d9Alex CurtisHi Jason, Thanks for the detailed writeup. Your theory is plausible, when the output saturates, the TIA loses its virtual ground and the input current has to go somewhere, which is typically through the internal input protection diodes. Before recommending a protection approach, I'd like to understand the circuit and the fault conditions a bit better. Could you share the following? A schematic of the front end with component values: input connector, any series resistance or clamps, Rf/Cf for each range, the relay network, supply rails, and how the GRD pins are connected. How long the output stays saturated during a range change, from the current step until auto-ranging recovers. The worst-case current the source can deliver during an overrange, and at what compliance voltage. Is it inherently current-limited? The relay part number and switching sequence. How the 1A range is implemented. Failure history: how many units have failed, on which range transitions. On your question about duration, the datasheet doesn't specify how long the absolute maximum ratings can be exceeded, so there isn't a safe exposure time I can point you to. That said, I like your idea of reducing the time spent in saturation with a faster uC based approach, but the inputs will also need some form of additional protection. Adding series resistance on the inverting input could be a place to start, however it’s difficult to recommend changes without a better picture of your existing design. Best Regards, Alex Curtishttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690080/ina238-unexpected-gain-error-in-ina238-reported-current/6512566Thu, 15 Oct 2026 23:17:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f62315e8-735a-432a-8063-9b6bb8d43d13Mallika SenthilHi Chris, I'm looking into this, will respond soon. Best, Mallika Senthilhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690111/ina701-ina701-output-voltage/6512555Thu, 15 Oct 2026 22:52:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:26febd94-8d0c-4b8c-b995-ee715258044eMitch MHello Manikandan, Yes, your understanding is correct, the current will flow through regardless of whether or not VS is supplied. Regards, Mitchhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690111/ina701-ina701-output-voltageThu, 15 Oct 2026 22:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:849e176b-92aa-412b-afc4-31dc44a3bdf6Manikandan RamasamyPart Number: INA701 Hi Team, I'm using the part INA701AYWFR in my design. I want to know whether the IN+ will pass to IN- without the presence of VS? In Functional diagram only shunt resistor is there, hope so yes.Kindly confirm. VS is neede only for measurement right? Thanks Manikandan RHome theater & entertainmentINA701https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1685029/ina240-ina240-ina600/6512509Thu, 15 Oct 2026 21:57:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e21ab68d-37df-4b92-8bb8-fc2ac95232bbTaylor AllanHi Guangran, Ning, I saw that this thread also includes the INA600. Is the voltage sensing circuit with the INA600 also experiencing the same issues? Could you provide a schematic/diagram of the voltage sensing portion? Best Regards, Taylor Allanhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689302/ina128-gain-not-1/6512380Thu, 15 Oct 2026 19:36:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:68e230fd-5282-4481-9d59-09f5d8bd112cRobert Clifton56Hi Robert, Do you have a resistor going to ground for the non-inverting input pin (pin 3)? I'm thinking this has something to do with your common mode voltage being very low relatively to the reference pin. I'll see if I can test it in lab to try to recreate your results. [quote userid="721761" url="~/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689302/ina128-gain-not-1/6512015"]There is a feedback resistor added from pin 6 to pin 3 of 105K, something the data sheet recommends. (Taking it out had no bearing on the result).[/quote] I've looked through the datasheet and didn't see this suggestion. Not that it's important since you have confirmed that it's not the problem. Best Regards, Robert Cliftonhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690001/lm2904b-q1-lm2904bqpwrq1-customer-concern/6512333Thu, 15 Oct 2026 18:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a2750172-3eb7-4114-b8c3-c0d6896baf9aCarrieHi Sarah, The two devices are authentic. However, the devices with the date code 2310 has a different leadframe and topside marking than the date code 2622. The "G4" indicator on the 2310 lot is a legacy nomenclature for our lead-free devices. This has been removed in our more recent updates the top side marking of our devices. Please see the PCN here for the details on the top side marking change. Please note that there are no differences in the electrical behavior of the devices. Please let me know if you have further questions. Best regards, Carriehttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690080/ina238-unexpected-gain-error-in-ina238-reported-currentThu, 15 Oct 2026 17:58:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8f6a55d4-82d6-4057-b4c1-08661645f38cChristopher EdwardsPart Number: INA238 Hello, We are currently doing bringup of a board with an INA238 at our power input. We are powering the board at 20V delivering between 0.1 - 7A roughly to the board during operation. We have our INA238 configured with default settings apart from the following: CONFIG register with bit[ADCRANGE] = 1; SHUNT_CAL register = 0x1000. We have been doing some first testing with varying loads and are observing that the stated current draw from our PSU is different from the current reported the INA. We have verified the PSU reports the correct current. In the graph below is the error of actual vs INA-reported current plotted against the load current. The gain error and offset is reported in the top right corner: Below is the schematic and layout of the INA on the PCB. Is there anything that stands out about our design that might cause this error? Thank you.Wireless InfrastructureINA238https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1690020/opa192-power-up-ramping/6512254Thu, 15 Oct 2026 17:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f93d3d3d-b980-4f44-ad46-197f7db8cce2Art KayLee, As long as you do not violate the absolute maximum specifications, the part will not be damaged and the subsequent operation will not be effected. It does not should like anything you are doing will violate the absolute maximum specifications so I do not expect an issue with subsequent operation. You should not expect normal operation during the power supply ramp. Your output may be indeterminant but within the power supply bounds during the ramp. During the supply ramp, at some point the supplies will be inside the specified operating range. At this point the output should be roughly the expected output based on the instantaneous value of the supplies and input signal. For all analog systems I recommend including TVS diodes on the power supplies. This can help protect the op amp and other devices sharing the supply rail. In some cases this can also help with supply sequencing / ramp rate issues. How to Protect Op amps from Electrostatic Discharge & Electrical Overstress Damage covers this topic in detail. In summary, I don't think you will have an issue, but I do recommend adding TVS diodes on the supplies. Best regards, Arthttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1687073/lmv1091-lmv1091-pre-amp-no-function/6512203Thu, 15 Oct 2026 16:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:299151c8-d7ab-40b1-8e74-b83de2282e1eIsaac BulivaHi Jacky, After checking, we do not have any hardware platform reference or EVM for LMV1091, and continued debugging efforts will be difficult to support for an older device like this. I would recommend looking into newer devices with better capabilities and features. I have compiled some info from older threads here on E2E on suggestions: " You can use other ADCs like TLV320ADC3120 to capture the data from a couple microphones, although you'll need to perform the noise cancelling algo on the host processor. The ADC includes some features that could help to improve performance, but not the algorithm itself. ADCx120 family includes a VAD block that can be used to detect voice activity at the input and notify the host processor. It also includes biquad filters that you may use to filter voice bandwidth (~300Hz to ~3kHz) before sending to host processor. " "Similar functionality could be implemented using op amps and ADC or CODEC with noise cancelling capabilities. Alternatively similar analog noise cancelling could be implemented with discrete electronics." " A lot of our more modern ADCs have mic preamps and mic biases built in such as the TLV320ADCx140 family. There's many codecs that have a front end as well, such as the TLV320AIC3204. We don't officially support Active Noise Cancellation but it can be done with an integrated DSP codec such as the TLV320AIC3262, some customers opt to do noise cancellation and other similar algorithms on the SoC. " Regards, Isaachttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689850/ina260-pwm-input-compatibility/6512182Thu, 15 Oct 2026 16:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a7c02f93-65ed-4159-bbf0-0c3ec4060221Mallika SenthilHi Jai, Will the INA260 be exposed to PWM? Is it being used in in-line current sensing? What is the PWM frequency, duty-cycle range, do you need average, peak, or per-pulse current? Also could you please share a schematic or block diagram? Best, Mallika Senthilhttps://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689263/ina201-q1-part-identifier-question/6512069Thu, 15 Oct 2026 14:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:854b4914-0759-470d-a217-417a219061ffRyan RinderknechtHi Mallika, we ended up finding the C of C which had all of the info we needed. Thank you!https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689302/ina128-gain-not-1/6512033Thu, 15 Oct 2026 14:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:19708b1c-a5ab-4e66-9d7e-cf10083d4f5fRobert CaraOne thing I should mention is that this is a wire wrap prototype (yes, I still wire wrap). I suppose that if the resistance from pin 5 to ground is not exactly zero then the 40K resistor internally connected to pin 5 would change and possibly upset the gain calculation. However, I ran the numbers out with an additional 8 ohms from pin 5 to ground and it made negligible difference in the gain of the internal differential amplifier.https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1689302/ina128-gain-not-1/6512015Thu, 15 Oct 2026 14:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:15e0fdc6-be5b-4599-a17c-1cbf45ff39f9Robert CaraI wanted to post the schematic, but I cannot figure out how to do it. I reconfigured the circuit and I will try to explain in words what it looks like. +12 volts at pin 7, -12 volts at pin 4, pin 5 is grounded, +5 volts applied to pin 3, pin 2 grounded. Nothing at pins 1 and 8. This supplies a voltage of 5 volts at the + input with respect to the - input. That would be a common mode voltage of 2.5 volts which is within spec. There is a feedback resistor added from pin 6 to pin 3 of 105K, something the data sheet recommends. (Taking it out had no bearing on the result). For the input described, the output voltage at pin 6 with respect to ground is 6.15 volts, giving a gain of 1.22. I bought seven of these ICs and all test out to give the same result. Thanks.