Part Number:LMP8481
I have a design where i use the LMP8481 to sense a DC current. I made a 1000 boards and 10 of them have an issue where the output voltage at no current drifts as I increase the temperature with a heat gun.
I have check if it was the reference voltage that was drifting but that seemed to be stable on both the good boards and the bad board.
Also when i replace the LMP8481 the problem seems to resolve.
Is this expected or predicted behavior?
Part Number:TLV376
Hello guys,
One of my customers is considering using TLV376 for their next products.
They want to get TLV electric characteristics about "Voltage output swing from rail" parameter under full temperature range.
On page 7 of TLV376 datashieet, the parameter is defined for 25C degree celsius only.
For example, the parameter is defined for full temperature range (-40C~+125C) in OPA376 datasheet.
The customer want to get the data like the above.
Do you have any data of "Voltage output swing from rail" parameter under full temperature range?
Could you please give me your reply?
It would be much appreciated.
Best regards,
Kazuya Nakai.
Part Number:OPA188
We have been using the OPA188 in a number of new development and pre-production projects. We have obtained the OPA188 from three different sources and they all have the same major problem. They are unstable and very noisy. When replaced with the OPA187, the problem is not present. When replaced with any other amplifier, the problem is not present. Does TI have a problem with the OPA188? This device has a very high specification and we would very much like to use it, but we have had to remove this from all products until the problem is solved. Please let me know that there is hope of this very high specification device. All the devices we have obtained from three different sources have the same problem. With kind regards, Ernest (Moorey)
Part Number:VCA824
Hi everyone,
I followed the figure in datasheet of VCA824 to test the chip.
In my circuit R1 = R2 = 20 Ω, Rg = Rf = 1 kΩ.(I also wondered why R1 and R2 are not 50 Ω)
I set the Vg = -1V, 0V or ±0.9V and input a sine signal which frequency is changing between 40Mhz and 220Mhz
I powered the circuit with ±5V.
We can see that the gain in 40Mhz is about 5dB bigger than in 220Mhz and the change is linear. The character is not related to the amplitude of signal or the Vg we set.
I think the GBW of VCA824 does not cause this and I don't want the gain of chip change.
If anyone can tell me the reason of this character?
Thanks
Wong Ju
Part Number:INA821
I plan to use the INA821 with a gain of 10 up to a frequency of 1MHz.
According to the Gain vs Frequency plot [Figure 21] I'd get a small dampening but not more.
On the other hand, a large Signal with 1MHz will be almost nonexistent at the output according to Figure 40.
In what manner will a for example 100mV signal be affected?
Kind regards
Part Number:OPA857
Tool/software:TINA-TI or Spice Models
hi,
i am facing problem in generating .WAV file for generating gaussian pulse, the output of the matlab code is for 10ns pulse width and for a time scale of 0 to 20ns with mean 10ns and sigma 5ns, the problem is the wav file which i have generated is time scaling 5 times in tina.
is there any internal scaling factor which i have consider in tina
please help me to resolve this problem
my tina generated gaussian pulse and the output of the audioread wav file are attached below
the wav file is also attached below
(Please visit the site to view this audio)
Part Number:INA226EVM
Dear Team,
Following Mil MAX connector used in INA226EVM. Can you please share the gerber file of INA226EVM for our reference design.
Connector reference : 851-43-010-20-001000
Regards,
Rohith K
Part Number:TLV521
Hello,
My customer needs to know if the absolute value reported in the ds (300mV) (PAGE 2 PARAGRAPH 6) for Differential Input Voltage can be greater or not.
Customer realized that under certain conditions of use this value is exceeded, reaching 2V.
Many Thanks,
Antonio
Part Number:OPA857
Tool/software:TINA-TI or Spice Models
Hello,
i have question related to the OPA857 functioning, i want to know how the voltage swing is set to 0.6V to 1.9V.
because the input to the OPA857 is a current source.
can i know how the input current is changing into the output voltage swing . are there any calculation or any formula for the conversion
thank you
Part Number:LM2903-Q1
Hi,
on the LM2903-Q1, there is no max input current specified.
(the non-Q100 has a max of -50mA in the data sheet)
What is the max input current for negative input voltage?
Thank you
Cristian
Part Number:LM6132
I'm loking for an rail-to-rail OPAMP to my project. I need a OPAMP that fed by a 12V and a -5V power supplies can generate an output voltage near these values, at least, near the positive 12V, the value of the negative source is not needed to be reached at the output.
I found the LM6132, and I read at its datasheet that it has a wide supply range of 2.7 V to over 24 V. But, at the same time, it says "for 5V Supply, Typ Unless Noted" and "Rail-to-Rail Output Swing 0.01V to 4.99V".
So, I would like to know if it can be fed by an asymmetric power supply and if, with a asymmetric power, it can reach the positve VDD of 12V at its output.
Hello,
I'm looking for a solution to the following problem. I have the output of a DAC that I need to boost up to 32 Volts. the output of the DAC is 0-2. However there will be a modulated signal on the transmission. Therefore I need a high slew rate (300V/us min) and high frequency, preferably around 20 Mhz. Can someone help me with a solution to this?
thank you,
Part Number:INA116
Hello team,
It looks like the 2D package drawing for the INA116UA is not available on the product page: http://www.ti.com/lit/ml/msoi003i/msoi003i.pdf
Also the TI package page refers back to the mentioned link. Can you please help to provide?
Thanks!
Part Number:LMP8640
Hi Team,
We have two questions.
-----------
[Q1]
We are evaluating LMP8640HV-H (H version).
Then, VOUT is around 75mV to 150mV when 3pin and 4pin are shorted (VCM=0V).
Is this behavior right?
<Result>
Unit1:75mV
Unit2:100mV
Unit3:150mV
We understand that the minimum Output voltage of LMP8640HV-H (H version) is 80mV(MAX) at VCM=2.1V.
Therefore, we would like to know whether “VOUT=150mV at VCM=0V” is right.
And, could you please let us know “minimum Output voltage(MAX) at VCM=0V” if you have any information?
-----------
[Q2]
We understand that Figure14 is Characteristic graph of LMP8640HV-T (T version).
Is my understanding correct?
If yes, could you please let us know Characteristic graph of LMP8640HV-H (H version) if you have any information?
Regards,
Kanemaru
Part Number:TLV1702-Q1
Hi team,
When using only 1 channel out of 2 channels, how should I handle the unused 1 channel pins?
We are thinking the method that we will tie In+ to Vdd and In- tie to GND. The output terminal is open.
As we do not want to increase parts, we will connect directly without using each resistor.
Is there any problem with this method?
Please let me know if there are other recommendations.
Best regards,
Tomoaki Yoshida
Part Number:TLE2064BM
I am using TLE2064 in my design. We find a strange issue during the test. When TLE2064 is working as a comparator (shown in the schematic, i.e. non-inverting input is connected to GND and inverting input is connected to an input, and there is no load on the output). When the input increases from 0V to +0.6V, the current of +12V and -12V power supply increases with the amplitude, and the maximum is 8mA. But when the input decreases from 0V to-0.6V, the current of +12V and -12V power supply remains unchanged.
It seems there is some current flow inside TLE2064 from +12V to -12V when the input is from 0V to +0.6V. Is this because of the internal characteristic of TLE2064?
Part Number:INA217
Hi Sir,
Our Customer want to use the INA217 for Phantom Power application.
But have some question, may i double check with you.
Q1, is Phantom Power current limit R is 6.8K(R1 & R2)?
Q2, If Current Limit R is R1& R2, then what's package for recommand?
Q3, If we are change the R1 & R2 any risk?
