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Part Number: AMC1301
I need help in the Design of Power Electronic Sensor Circuit without Hall Effect Transducer.
Anyone has the experience in doing it? I am using AMC1301 as part of my design.
Hope a kind soul would help me. Thank you very much!
In reply to Alexander Smith:
I am using AMC1301, THS4521 and TLV172 for my current and voltage sensor.
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In reply to Kuan Fong Lee:
Alex SmithApplications Engineer | Precision Delta-Sigma Converters
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I will post my circuit for verification. Don't close this thread yet. Thank you!
This is my voltage sensor circuit using AMC1301.
I don't think that the THS4521 is necessary. I would start with this circuit:
Eventually, I would take a true RRIO amplifier instead of the TLV172. See also here:
Referring to the left side of AMC1301, keep in mind that between the input pins a low ohmic shunt must sit. And low ohmic resistive voltage divider can be mounted, as well. See section 10.2.2 of datasheet.
In reply to kai klaas69:
Thank you for your reply.
Why do you think that my THS4521 is not necessary? What do you mean by RRIO amplifier? Could you please enlighten me.
Hi Kuan, a RRIO OPAmp is an OPAmp which can handle input and out signals going from 0V to the supply voltage, or at least very close to them. The "common mode voltage range" of TLV172, on the other hand, is limited. See section 7.7 of datasheet of TLV172. Why have you put the THS4521 into the circuit? Only to provide gain? This can also be achieved by the TLV172 alone. Just modify the resistances in the feedback loop of TLV172 as discussed in the link I gave you: www.ti.com/.../sbaa229 Kai
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