Hey again,
I don't see a problem using the switch with our parts; although, I am not sure if the TPS22959 will be able to withstand the 55A current peaks though. As for the rest of the circuit it seems you have gone with one of the options I proposed…
Other Parts Discussed in Thread: INA209 , TIPD104 , INA326 , TIPD135 , PGA281 I have a new request from industrial key account.
The desired current range for customer application is given as 0.1uA to 500mA.
Supply voltage is 5V, signal to sense is quite slow…
Hi Yehezkia,
INA226 is an Ultra precision Current Shunt monitor but it's bias currents are typically 10uA which will create inaccuracies measuring 1uA of load current. Please take a look at this TI desgin TIPD135 - 10uA-100mA, 0.05% Error, High-Side…
Other Parts Discussed in Thread: TIPD129 , TIPD156 , TIPD135 Dear Sir
We would like to measure 1mA~8A current and the Full voltage range is up to 2V (ADC input)
Have any solution could to this SPEC?
Thanks
Peter,
I would look into TIPD135 to measure such a small current. 20mA is prone to large errors with a typical current shunt monitor and a PGA based design or true instrumentation amp based design might be better.
You might look into TIPD104 as well. …
Hello Luis,
There is a document that is to be published tomorrow (TIPD135) that provides a solution similar to your question. Please try searching www.ti.com for TIPD135 tomorrow morning.
I noted that it is a similar solution, but there should be enough…
Hello Randy,
My apologies. The title of your thread clearly states that the 100nF is on the input.
There are component footprints for an input filter on the PGA281EVM, but from the factory there are only 0-ohm resistors in the signal path. That being…
Hello Craig,
If you are new to current sensors then I suggest you check out the Current Shunt Monitor FAQ , especially the section on low current measurement applications. There is one reference design ( TIPD135 ) in particular which is capable of sensing…
Sunil,
There is a TI Design, http://www.ti.com/tool/TIPD135 , that you may consider. It uses a PGA281 to accommodate 10uA-100mA current sensing with <0.05% error.
Jason Bridgmon