Timing of supply and input voltage to OPA2188
Hi,I am designing inverting AMP using OPA2188AIDK. (Please visit the site to view this file)I am planning to supply it with 12V power supply with rise time 600us while the input signal voltage Max...
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Attenuation Amplifier
Hello Amplifier Team,My customer was considering to use AMC1200 for monitoring battery voltage(1200V) of EV.However, the input range is +/-250mv, so it's hard to meet into the range by resistive...
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INA333 / ECG application
Hi Team,My customer is interested in INA333 for ECG application and he found the following figure in datasheet page.14.Does TI have any actual performance records for this application(schematic)?If the...
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Different ECG signal from female and male!
Hi,I am working on ECG, I designed some circuits and finally I could receive clear ECG signals, but I have an unknown problem, when I finished my tests on my self every thing was ok, but when I tried...
View ArticleECG: Sharing One electrode for two instrumentation amplifiers
Hi,I have a circuit for measuring ECG and it is working perfect for one channel. I have one passive high pass filter (R1,C1) and one passive low pass filter (R2,C2) before the instrumentation...
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Quad OPA4209 heat problem
Application: Analog Signal Convert(4~20mA)Power supply:DCDC Convert (TDK CC3-2412DR-E) Input Voltage: DC24V, Output Voltage: +15V/-15VVoltage Follower circuit using opa4209.When...
View ArticlePGA280 VSON and VSOP Voltages
Is it possible to have VSP=+12 and VSN=-12 with VSOP=+5V, VOCM=0V and VSON=-5V. Looking at the datasheet it says typically VSON=0V and VSOP=5V with VOCM=2.5V however looking at the electrical...
View ArticleOPA564 designed as summing op amp, output overloads
Hello,I have used OPA564 as a summing opamp to sum two input(a DC signal around 3.3V with an AC signal around 1.4V, frequency 10kHZ). this application is going to be used to provide me with a modulated...
View ArticleDoubt about OPA1642 and OPA227 common mode voltage range
Hi:I need to implement a buffer for VcomDA of a codec, and i only have OPA227 or OPA1642...The VComDA is 2.5V DC voltage as i'm using 5V supply... for making the circuit simple, i want the opamp to be...
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IVC102 Circuit Incontinence, Part II
Two questions below:In our last installment, we found a constant drift with nothing connected to our IVC102 input. This appeared to be attributable to input bias current, although the value of drift...
View ArticleVCA2615 Rin formula on page 18 of the data sheet
Hallo,on page 18 in the data sheet are two formulas. Number 5 which uses A/2 and number 6 which uses A.I guess formula 5 is for differential signals and formula 6 for single ended.Is that right?Mark
View ArticleLinear amplifier for 100kHz sin wave at least 3A
I try to amplifiy a sinwave signal at 100 kHz from mA to at least 3 A.The out put voltage wont be much than 5 V. Now I am using OPA 561 it works great up to 1 A. But I need to increase the current. I...
View ArticleHigh Side Current Monitoring
Hi,One of our friend suggested me to consider INA146 for High Side Current monitoring. I just wanted to confirm the output of the INA146 is pulsating AC wave or an stable DC output.
View ArticleADS1675REF and THS4503
Hello,We exceeded the maximum voltage swing of ADS1675REF. Therefore, THS4503 burned out. We changed it with a new one but when I start acquisition, noise floor is around -100dB. It was around -150dB...
View ArticleMaximum Output Current LM2901
Hi,I need to understand the specification of the datasheet of the LM2901. In the table of Absolute Maximum Ratings, the maximum output current is 20[mA]. Is this output current a maximum for each of...
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INA125 single supply issue
1st post hereI'm building a pressure sensor circuit with the INA125 and a single supply. (See diagram) I did some searching here but could not see a solution.I have it connected according to FIGURE 5....
View ArticleUsing a XTR300 as a bidirectional current source/sink with a varying input...
Hello,I am currently planning on using the XTR300EVM as a voltage to current converter to power a heater of a thermal controller I am building. The input voltage is designed to vary over time (positive...
View ArticleLike TIDA-00067 but at nominal 12 VDC?
Is there a functional reason (as opposed to a choice of target market) why the TIDA-00067 DC (24 V, nominal) Power-Line Communication reference design specs 18 to 35 VDC? With appropriate internal...
View ArticleLooking for 2 channel version of INA125P with through hole mount
Hello,I'm started a project involving 2 load cells and using this blog as a guide.It uses the INA125P and a single load cell to read values into a microcontroller.The INA2331 looks to me ( a novice)...
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