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why OPA129 cannot be used as a voltage follower, what is wrong
the circuit is attached.When I measure the potential, it is 13.5V. I thought the opa129 is damaged, so I used two brand new opa129, it still gives me the same thing.why can that happen?
View ArticleUsing PGA309EVM-USB to calibrate external sensor hardware
HiI have the PGA309EVM-USB and USB-DAQ hardware. I'd like to use the DAQ to calibrate my own sensor hardware which uses the PGA309.I noticed that the DAQ controls the TEST input to the PGA309 on the...
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TLV2771 for piezoelectric material force sensor problem
Currently I want to use TLV2771 circuit to connect to our piezoelectric material. I am not sure if it fit our demand. Actually my major is not in this field. This is all new to me. And I saw a...
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not sure which circuit is better, please give me some advice
Dear Experts:which one is better and has less noise?Thank youBest regards
View ArticleQuestions about Spice model of LMV712
Hi all, I'm looking for a Spice model of LMV712.And I confirmed the TI Web, but it was't found.Please let me know if you have data. Yours sincerely,
View ArticleOP AMP Propagation delay
Hi, Can any one help me to find the propagation delay of an OP AMP.RegardsHari
View ArticleOpa355 RfI
Hi I have been using Opa355 in my current products with good success. (Shipping in several K units). It is used in a Tia with 8M gain at 1MHz signal.I recently started a new design and this design uses...
View ArticleDrv103 Oscillating at 1000Hz
Dear Support: I am trying to get the DRV103 to oscillate at 1000 Hz. We had it working at 20k Hz with a duty cycle of 50%. The resisters used were Rosc: 220K and Rduty 150K. Now I switched to Rosc...
View ArticleIntegration of INA126 with sEMG and Electrical Stimulation
To Whom It May Concern:As part of my dissertation data collection, I will be using electrical stimulation in conjunction with surface EMG. As part of my literature review, I came across an article...
View ArticleAMC1100 / calculation of accuracy
Hello,(1) about NonlineraritySince Nonlinearity is +/-0.015% , should we consider ±0.6mV as output voltage difference by nonlinearity at the condition of Vdiff=±250mV, Gain=8 , Vout = ±2V? (2) dc...
View ArticleLME49880 / Connect the exposed pad to V-
Hi All,The datasheet recommend to connect the exposed pad to V-. Please let me know the reason. Is the exposed pad connected to GND potential into the package?Best Regards,Sonoki / Japan Disty
View Articleshould to develop an anti aliassing filter now but the sampling frequency is...
Hi,I should to develop the hardware for my embedded system.For the anti aliasing filter, the sampling frequency is not known now. ie it wil be designed in software deveoping phase.IS there a...
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analog interface to diffrential adc; where to place anti aliasing filter?
Dear all,I want to condition an analog signal to a differential adc channel.I decide to use the bellow circuit ( from TI note )Where do I should to place an anti aliasig filter?Can I combine the anti...
View ArticleLMP7221 : PCB Layout
Dear specialistOur customer is considering LMP7221.We found two documents of EVM but they don't describe about PCB Layout.Our customer want to refer EVM's PCB Layout.Could you provide about the...
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TINA-TI Simulation Phase Margin
Hallo,Would you please let me know how to look at the phase margin in TINA-TI simulation?I found a material of TINA-TI simulation on the negative feedback.There are some figures as below in this...
View ArticleINA128 and INA333 Signal Out.
Hello, I am using both the INA128 and the INA333 in a sensor conditioning circuit. Both have a 5V supply and pin 4 and ref pin 8 are tied to 0V. When measured with test leads at the circuit...
View ArticleTL082 IBIS model
Hi! all,Our customer plans to use TL082 and has asked for the IBIS model. Could you please share the IBIS model for this device?Regards,Toshi
View ArticleOPA376-Q1/Input rail to rail.
Hi all.There is no description of " Input rail to rail" on the data sheet of OPA376-Q1.Does this device have "Input rail to rail"?Best Regards,Sho Ogane
View ArticleOpen loop output impedance of INA129 and INA121
Hi,1. What will be the open loop output impedance of INA129 and INA121?2. Is there a way to use the INA spice model and extract the model of 3 opamps inside these INAs seperately to check the...
View ArticleTL064: supply voltage missing min specification
Hello,a question regarding the minimum supply voltage came up, as there is no clear specification of it in the datasheet but on the product page there is.product page states: 7V minimum required total...
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