OPA2192: OPA2192

maheswari V

Prodigy 75 points

Part Number: OPA2192

Tool/software:

Hi,
How can we implement the signal conditioning circuit for the LEM Voltage transducer if the output of this is 50mA

over 1 year ago

0 maheswari V over 1 year ago

Prodigy 75 points

Can you please provide the application note for the Voltage transducer DV4000/SP3 for sensing the DC voltage

0 Raymond Zhang1 over 1 year ago in reply to maheswari V

TI__Guru* 77501 points

Hi Maheswari,

Could you be specific what you are trying to do?

If the above device is what you are talking about, there is 4kV at the voltage transducer and output current is 50mA. Are you trying to construct V to I converter? or convert the 50mV to voltage from the device?

https://www.ti.com/lit/an/sbaa337a/sbaa337a.pdf?ts=1735827880451&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FINA149

Please provide the detailed design requirements for the application.

Best,

Raymond

0 maheswari V over 1 year ago in reply to Raymond Zhang1

Prodigy 75 points

Hi,
we are using the above mentioned transducer for current sensing the output of the transducer is 50mA.

How we will convert these 50mA signal into Voltage and Given to the MCU.

Is there any application note for this process

0 Raymond Zhang1 over 1 year ago in reply to maheswari V

TI__Guru* 77501 points

Hi Maheswari,

maheswari V said:
How we will convert these 50mA signal into Voltage and Given to the MCU.

The transducer is a V2I converter. To convert the 50mA into voltage, all you need is to place a precision resistor in series with the current source, where 50mA*R will be the voltage sensed by MCU's ADC. This is is cheapest way to convert the current to voltage.

Else, you can use current current and convert to Voltage with TIA circuit. Since the input current is high, you do not need much gain to amplifier the signal.

https://www.ti.com/lit/an/sboa220b/sboa220b.pdf?ts=1735876557212&ref_url=https%253A%252F%252Fsearch.yahoo.com%252F

https://www.ti.com/lit/an/sboa291a/sboa291a.pdf?ts=1735876624394&ref_url=https%253A%252F%252Fsearch.yahoo.com%252F

If you have other questions, please let me know.

Best,

Raymond

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OPA2192: OPA2192