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How to read the output of an Optical Encoder (Motor control)
Hi Guys!I need some technical help in answering the below:The application has an encoder which has a differential output and it is buffered then amplified (put in mid rail and filtered), see channels...
View ArticleTLC277CDG4 temperature range
Hello,Is TLC277CDG4 rated from -40 to 85°C? The datasheet is unclear about that, yet I need to be 100% sure about the temperature range.Thanks,Jaka Ivančič
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INA 326 not working!!!
Hi,I am using INA 326 instrumentation amplifier. I have connected it in bridge arrangement as shown in datasheet. But it is not working. I have checked it on TINA simulator where it works fine. But...
View ArticleFast current measurements: analog and ADC choise
Hi.I'm working on the device, which should get detail and precise current measurements for the 2.4GHz tranceiver -> 300 microseconds on-air time.The total measurement current is less 50 mA, and...
View ArticleVariable Gain INA148
Hi, I was wondering if there is a differential amplifier such as the INA148 but with a variable gain and a common-mode voltage of +-200V.INA146 has a variable gain, but unfortunately its common mode is...
View ArticleNeed Information- TLE2142AMDG4
Hi Can you please provide the following information for the TLE2142AMDG4 Part ?1. Junction Temperature Max (Tj Max) 2. Typical Power dissipation (Pd typ)3. Maximum Power dissipation (Pd max)4. Thermal...
View Articleopa2188 Altium Simulator
Hi all, I am trying to simulate the opa2188 in the altium environment. I receive the following error on the model:SUBCKT VCVS_LIMIT_0 VC+ VC- VOUT+ VOUT-.PARAM GAIN = 1.PARAM VPOS = 10M.PARAM VNEG =...
View ArticleLM124/324 - ESD Protection
I would like to develop the circuit for check whether the operator grounded properly or not ??? Like to have high precision op-Amp for find the ground.....Help me out from this...
View ArticleCurrent monitor for LED driver
Hi,I am designing a adjustable current-feedback switching regulator for driving LED's. The switcher works at 500KHz, output is max. 3A dc at 6V dc. I want to monitor output average current for display....
View ArticleLMC7221 op amp max operating frequency
I wanted to use the above part as a comparator, but since my frequency range is from 10kHz to 10MHz, I wanted to know the maximum operating frequency of the this. I could not find the information...
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TINA i
In TINA , in the window(catalog editor) for selecting BJT, its current gain(Beeta) is not displayed. But it is a very important tool for selecting a transistor. Can any one please explain me why it is...
View ArticleInstrumentation Amplifier with Offset Amplifier
Hi, I'm new to create circuits. I want to make a strain gage conditioner. I searched Internet and found that I need to use instrumentation amplifier. I chose my IC as INA122 but lately I saw that...
View ArticleLMC6001
hiiii bought an LMC6001 plus my lmp7721n and i wanted to know which is the highest frequency to reach with a 1Gohm feedback resiatancethaaaanks
View ArticlePGA280 SPI timing.
Hi.I have been unable to find much information on the SPI timing of the PGA280. I have found only two statements in the datasheet. first is max SPIclk is 10MHz, and data is latched when SPI goes...
View ArticleOPA4348A Temperature questions [ALSM]
Received a message from a customer with the following question:"I designed in a OPA4348A into a design. On occasion, without power being applied to the device.The temperature of the device could be...
View ArticleOPA2209 / optimization of THD
Hello, (1)Could you please kindly let me know the optimization method of THD for OPA2209 ?If there is any application note, please let me know. (2)Please see the attached file page 1 as the...
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20Mohm input impedance with OPA277
I am trying to build unity gain buffer for field source of (-5V)~(+5V) DC (reference cell) and need min. 20Mohm input impedance at input of this buffer. Here I have used OPA277 in differential mode...
View ArticleIVC102 reset-and-integrate measurement:
I have acquired a BB IVC102 precision amplifier for detecting small currents originating from an ionization chamber.In order to detect currents up to 100nA, I am integrating for 10ms before closing S2...
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Plz explain this buffer circuit ...
HiI'm stuck trying to understand a part of this and would appreciate any pointers from you. This is a working circuit and reproduced as it is. a) The input 1uF capacitor (connected in reverse) - this...
View ArticleLOG114 Testing
Dear Sir, One of my customer is testing our LOG114EVM for very low current measurement. He is generating current (uA )by 5 volt and 100M ohm resistance.He got good response of LOG114 at 1uA input but...
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