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INA331 Output noise when using amplification configuration via external...
Hi all,we are using a INA331 in an electrical measurement device. The INA331 is used to condition the input signal for ADC input with a total output range of 0-2.38V having 1.19V as reference and zero...
View ArticleAFE 031 doubt
Hi,I am trying to interface the AFE031 via SPI to control the DAC. I can write and read from the registers and So far according to the logic analyzer and the obtained values I am doing it correct.I can...
View ArticleISO124 and differnetial Input
I need to monitor voltage across a 1 ohm sense resistor with at least 5K banwidth. Ideally, I would like to perform a differential voltage measurement with Gain of 1 and have an isolated differential...
View ArticleINA116 Spice model
Hi, I am looking for a model (or some fairly accurate model) that I could model the INA116. I would like it to be a bit more realistic than the ideal three amp model, and maybe be able to model the CMR...
View ArticleOPA2141 Problem with current senseing, differential output
Hi,try to simulate an pickup amp for current sensing. I Need full differential Output and very low 1/f noise, so normal shunt sensors were not usable.Now I found odd behavior. When connecting the low...
View Articleop amp oscillation in leakage resistance monitoring circuit
I'm using the TI ultra ultra low input bias current op amp with part number LMC6001AIN/NOPB.I'm measuring leakage resistance of big 1MVA transformers out on the ocean. Basically, the circuit sets off...
View ArticleNEED HELP TO FIND DOCUMENT??
HiI'm looking at the document with literature number SNOA839 "A quick sine wave generator", where can i find the on-line excel sheet for calculating the components?Many thanks
View ArticleOPA2735
OPA2735Datesheet:ELECTRICAL CHARACTERISTICS: VS = ・}5V (VS = +10V)Boldface limits apply over the specified temperature range, TA = −40・・C to +85・・C.At TA = +25・・C, RL = 10kΩ connected to VS/2, and VOUT...
View ArticleOPA330
Hi,Is possible to use the OPA330 to measure the voltage drop in a resistor when the GND of the input is different to the GND of the OPA voltage source? How must I connect it?Thanks
View ArticleOPA340, OPA347 unpowered input to output leakage
I'm looking to use an OPA340 or OPA347 as a simple comparator to monitor the voltage of the BR2032 battery. When the opamp is unpowered, if there any possibility of significant (nA) leakage from IN+...
View Articleabout ads1248 common mode voltage
HelloAbout the ADS1248 it support one end input, and its common mode voltage is above 0.1V+Vin*gain/2. when I sampling the voltage 0.5V (0.5 connect to Vin+ and VSS connect to Vin-). Can I Sample the...
View Articlecan I get 3 wires 's 4-20mA output with PGA309 and XTR115?
we have had 2 wires 4-20mA output sensor products using PGA309 and XTR115.but now some clients want 3 wires 4-20mA output.could you give me some advices? is it possible to get 3 wires 4-20mA output...
View Articlesignal noise clipper
i have a 20khz square signal. upto 1 volt signal is ok but from 1 volt to 2 volt more noise is added so by using op amp as a clipper we get signal but duty cycle changed. i want exact frequency and...
View ArticleLMV722 Output swing
Hi,Does anyone have the data of LMV722 output voltage Swing for the condition below,VCC+=5V, VCC-=GND, RL=1KΩ to VCC+/2, full temp rangeWe'd like to know the amximum voltage for VOL.Thanks Go
View ArticleLM13700 2nd order LPF in datasheet
I'm trying to use the LPF given in Fig. 34 of: http://www.ti.com.cn/cn/lit/ds/symlink/lm13700.pdfHowever, simulation with two different models yields a cutoff frequency that is entirely different than...
View ArticleInquiry regarding offset and span adjustment on XTR111
Hello, allNow we have one inquiry regarding offset and span adjustment on XTR111 from our customer.Please refer to the item below, and feedback us with your comment.For this trial, it is the first time...
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EMI XTR116
I have a design using the XTR116 With a isolated Power supply and external loop Power. It Works well, but we fail on emc immunity testing (both conducted and radiated suceptibility) in freq range...
View ArticleTesting Op-amps performance
Hi,I have implemented a high precision system using the LMC6462 high impedance op-amps. How can one characterize the error created by the op-amp it self ?What are the common procedures implemented to...
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Signal Conditioning Load Cell
I am designing a measurement setup containing 40 loadcells to measure dynamic forces on a bundle of cables. I think I will use 4 strain gauges in a full bridge configuration in each loadcell.The setup...
View ArticleOPA128 datasheet mistake?
Hi,I am calculating the noise of a transimpedance amplifier that uses OPA128. I see that the datasheet (http://www.ti.com/lit/ds/symlink/opa128.pdf) is not coherent. In page 2, the noise at 100Hz is...
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