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LMH2832: Can we use LMH2832 amplify low frequency signal?

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Part Number:LMH2832

Hi team,

My customer wants to use LMH2832 to amplify 0-100MHz signal, but in our datasheet only give parameters from a certain frequency, not from DC signal. So I want to ask if we can use LMH2832 to amplify low frequency signal in this application. If not, could you recommend some chips that can accomplish this task?

Thanks and Best regards,

Will


AMC1200: Declaration of Conformity for CE

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Part Number:AMC1200


Hi Team

My customer is considering to use AMC1200B.
They requested to provide Declaration of Conformity (DoC) for CE.
Do you provide Declaration of Conformity ?

I'm sorry for poor knowledge.
Please advice.

Honda

ISO124: Leakage current and also use of Tantalum caps

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Part Number:ISO124

Hi Team, 

Concerning isolation between the input and output side of this device, is there any data on what the isolation impedance is?  The reason I ask is that the isolation device is connected to a high impedance sensor  Also, is there any leakage current caused by the AC capacitance isolation circuit?  I see it is differential, but what happens if there is a mismatch between the two capacitor values?

Also, on the power supply filter there are 1uF tants shown on the schematic, is it OK to use ceramics?

 

TLE2064ID troubleshooting issue.

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HI, team: My customer is  using TLE2064ID as a differential amplifier with 26mV across the input.  Approximately 10V at V  and 10.026 at V-
The rail voltages are set to  /-15V.
The gain analyzed in our circuit should be 2.5 but they are measuring 3.0.
I can send schematics.
We need help determining the possible cause.

He could not send the entire circuit but this is part of a closed loop system.  For troubleshooting purpose, he had removed a component so the circuit can be troubleshot as an open loop.

He measured the rail voltages to be ±15V.  V1 and V2 can vary depending on the input but it will typically be around 10V with V2 With Respect To V1 being around +26mV.  The gain of this circuit should be 2.5.  However, when he tested the circuit the gain was measured to be 3.

LMC6482: Voltage Gain and supply voltage

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Part Number:LMC6482

Figure 25: Single Supply 15 Volts, Input vs Output voltage

How can the output go negative in the configuration as shown in the graph?

Relationship between Av and the supply voltage

Thanks!

AMC1301: Unnecessary radiation noise problem

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Part Number:AMC1301

Hi all,

The following report was received from my customer.

Unnecessary radiation noise was observed at equal intervals between 400 MHz and 2.5 GHz. In particular, it shows high values around 1 GHz.

1. Is there a possibility of generating such unwanted radiation noise?
    If there is such a possibility, could you please tell me the countermeasures?

2. What is the frequency of the internal OSC of the AMC1301?

Regards,
Toshi

INA126: Help selecting an amplified for pyranometer

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Part Number:INA126

I've got a 2 wire pyranometer. It generates voltage 0-40mV based on the strength of the solar irradiation.

I've got in my toolbox INA126 and INA122.

Are they the right devices to boost the 0-40mV output?

If I understood the data sheets, the inputs can be from -0.7V to 0.7V, is that correct?

Kind regards

Dean

ISO122: can this part be used as a differential input or is one input tied to gnd (pin 16), it appears as though it can not from function block diagram

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Part Number:ISO122

want to use this part but the input may be differential in the application (remote analog interface to customer). I seems I need to add a differential amp and drive the input from the diff amp output. Please answer asap

thanks


LMP7721: lmp7721 evaluation board vary temperature dependent

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Part Number:LMP7721

Hi I am using the lmp7721 evaluation board configured as a trans impedance amplifier measuring 1-2pA

the output is vary temperature dependent  increasing output from ambient 25 deg c to 0 deg c and decreasing output from amb 25 deg c to 65 deg c

the change seems to exceed the dat sheet specifications

the board has been ultrasonically cleaned with alcohol

any suggestions

thank you

Brian

LM4250: END OF LIFE LM4250CN

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Part Number:LM4250

I would like to know which electronic component could be used in place of the LM4250CN and which contains the same electrical characteristics. 
Which PartNumber does Texas Instruments recommend to be a replacement for the LM4250CN?
I thank the help of all you

XTR110: real operation temp range?

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Part Number:XTR110

Hello, All,

At datasheet, page2, i see operation temperature for XTR110KP as 0 +70C. At page12 operation temperature has shown as -40+85C. Please advise correct operation temp range for XTR110KP

Best regards,

Dmitry

PGA5807A: output not big enough

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Part Number:PGA5807A

I'm using pga5807 to amplify 5mhz 500mv, single ended signal, but the output is not big enough,and distortion.

my sch is as follows, whether the input and output is connected directly or with a capacitor.

I'm not using the evm, and when i send 0x358000, the device will shutdown, when i send 0x3b0000,the output is not as big as 32db, even when the input is 50ms pp.

The yellow is input ,blue is output.

XTR117: Need some help with correct application/electrical diagram

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Part Number:XTR117

I have some troubles with right connection XTR117. I've read all XTR117's datasheet and I made connections like on graphic below, to have conversion from 1-5V to 4-20mA.

When I try to measure the current on OUT+ and OUT- I getting 24V voltage and current from 10mA to 200mA and more (current rapidly incerasing during measure). To measure I using multimeter and 100Ohm resistor.

How can I fix this? Note that I'm rookie in electronics and I have already made dedicated PCB plate. Is it possible to fix this schematic?
Or maybe can someone suggest me, how can I make 4-20mA current loop with 0-5V or 1-5V input?


I apologize if I asking trival questions, but I wasn't able to fully understand datasheet and made everything corect by myself.

LMP91051: SNAA207 // Output waveform seems out of match with application note

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Part Number:LMP91051

Good evening,

I've been implementing the application notes that can be found here, as to put together a CO2 measurements system with the help of a sensor from AlphaSense and the LMP91051 AFE from TI. The schematics for my prototype are exactly the same proposed in the application notes.

Last week I was able to finally record my first waveforms and it seems the voltage delta between the detector and the reference seems a bit small. On the left is what I got, on the right is the screenshot from the application notes:

In the application notes the delta is about 30% of the whole RC step response magnitude, in my plot I would say it is about 15%, I also read that two measurements were made, one at 130ppm and the other one at 5000ppm. On the right, is the delta higher because the CO2 concentration was 130ppm? My measurements were made in "open air" so I assume it would explain theses differences, given the average CO2 concentration of 400ppm in the atmosphere, I just wanted to make sure.

Any help or confirmation on that would be much appreciated.

AMC1200: AMC1200

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Part Number:AMC1200

Hi,

 I am using AMC1200 for 3 phase mains voltage monitoring.If I apply (Isolated) VDD1 and VDD2 5V to IC with no Input voltage I did not get +2.5V at output.Please Let me know the causes for not getting 2.5V at output. I have checked the voltages at supply pins.

Regards,

Sagar 

 


PGA309: Multi-Cal-System

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Part Number:PGA309

1.I'd like to know if there's a user guide  in this version2.3i,and it should be different from the 1.6B version for this version.
2.I read the User's Guide(Multi-Cal-System Evaluation Module).I want to know if the Multi-Cal-Master PCA Card can be used as a  Multi-Cal-Slave Kit.I have 4 systems, but I don't have a Multi-Cal-Slave Kit.

Best Regards,

LMP7721MAEVALMF_NOPB: LMP7721 Evaluation Board Railing for a long period of time

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Part Number: LMP7721MAEVALMF_NOPB

Hi TI Engineers!

I purchased a couple of LMP7721 Evaluation boards (4 or 5) and I noticed they all shared the same issue. When the LMP7721 is railed, it will take a around 300 seconds to get to an un-railed value. The LMP7721 is setup in a transimpedance amplifier configuration with a feedback resistor of 5T and capacitance of 2pF. When the op amp is not railed, the time response is close to R*C of the configuration. I'm using the evaluation board to measure charged particles. Is there an explanation for this phenomena? 

Thanks!

Tyler

OPA4234UA/2K5

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Support Path: /Product/Development and troubleshooting/Find key information on a device/

Hello,

Due to the strict requirements,our customer wants to know the meaning of the marking on the chip.Can you help me explain the meaning of these two different types of marking?The one is 56AKTFK,another is 56AGOPK.

Butter-worth OPA with Bandwidth

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Does TI have OPA with butterworth features and 1MHz BW?

Regards,

Brian

Lmp2012: LMP2012 common-mode input voltage

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Part Number:Lmp2012

Hi all,

The LMP2012 datasheet states that common-mode input voltage is -0.3 to Vcc+0.3. From this information, i guess V- pin of the LMP2012 should be GND.

I wonder that can i apply negative supply to V- pin of Lmp2012

Regards,

Eren

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