All Questions
Tagged with current-sensing adc
7
questions
1
vote
2
answers
83
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Is amplification needed for high-side current sensing?
I have a 5 V system and I want to monitor the current in different parts of the system. I am planning to place a small value resistor on the positive power rail and feed the rail voltage and the ...
- 345
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votes
0
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155
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Current Sensing Trace Routing
I'm developing a motor control board (sensorless FOC). I have a question about the differential pair traces, they are very long (the longest is about 80 mm) and crosses several gate lines. How bad is ...
0
votes
2
answers
185
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Voltage divider dropping voltage more than expected
I'm trying to connect an ACS712 current sensor to an ESP32 ADC pin. The ESP32 expects 3.3 V, but the ACS712 can reach 4.5 V.
When there's no current going through the ACS712, its signal is 2.5 V, so I ...
- 103
0
votes
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128
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Designing high bandwidth current sensors for inductor current sensing
I am designing a high-frequency current sensor, suitable for sensing +/- 20 Amps at frequencies of 200kHz. This is being used in average current mode control application in an isolated forward ...
- 93
1
vote
2
answers
184
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AC phase current sensing using Isolated delta-sigma modulator
I am trying to design a isolated AC current sensor.
I've chosen the AMC1106 Isolated Delta-Sigma Modulator.
(change my mind if you think there is a better solution for 220V AC; 2A Max; 0.25%)
The ...
- 171
1
vote
1
answer
55
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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 ...
- 121
1
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1
answer
96
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Current sensing application
The purpose of the application is to maintain a constant current at the load, even if the resistance changes.
I understand that the ADC is reporting the voltage and current values at the load to the ...
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