All Questions
Tagged with current-sensing instrumentation-amplifier
5 questions
4
votes
3
answers
451
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Sensing current down to tens of nA with INA828 or other OPA
I need to measure the current draw of DUT that can be an MCU in deep sleep, such as Attiny85, or a more power hungry MCU that is powered off by TPL5110. In this post, I proposed a circuit where an ...
- 9,656
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votes
2
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108
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INA828 for sensing current down to tens of nA
I need to measure the voltage drop across a test resistor in order to sense the current flowing through it. This test resistor has a value of 1 MOhm and it's connected between the positive voltage of ...
- 473k
1
vote
2
answers
241
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Current Sense Amplifier / Differential Amplifier Negative Voltage On GND pin OK?
Right now I'm picking a current sense amplifier for my application, and I'm looking for for amplifiers with maximum offset voltage of below 50uV (and offset and bias currents in nA/pA range).
Luckily, ...
- 38.5k
1
vote
1
answer
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XADC Current Sensing Reference Design
Please refer to this reference design for AC701 (snippet below).
The schematics, specifically the current sensing sections in pages 34-36, show this:
I want to understand why, for the REF output of ...
- 473k
1
vote
2
answers
889
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High-side current sensing with a rail-bound instrumentation amplifier?
I know that current shunt monitor ICs and high common-mode voltage differential amplifiers like the INA117 and AD629 exist but I'd like to know if it's possible to use a regular instrumentation ...
