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XTR116: XTR116

Rakesh Gangadharan
Prodigy 30 points
Part Number: XTR116
Other Parts Discussed in Thread: XTR117, XTR111, XTR115,

Tool/software:

Hi 

I am developing a 4-20mA transmitter for current measurement for both low-side and high-side. I have developed a basic schematic using your reference document but require some support to decide on the GND sharing and isolation part. Please let me know how to take it forward.

Regards

Rakesh Gangadharan

Sr. Hardware Engineer

ELMA Electronic Pvt Ltd

Bangalore.

  • 0
    TI__Guru* 77541 points

    Hi Rakesh,

    Rakesh Gangadharan said:
    I am developing a 4-20mA transmitter for current measurement for both low-side and high-side.

    Can you show me your basic schematic from our reference design?

    It is not clear what you want. What is your input range and intended to do with the V-I conversion?

    We have integrated V-to-I 4-20mA current transmitter, such as XTR115/XTR116/XTR117 (2-wire current transmitters) and XTR111 (3-wire current transmitter). You are not going to design lower cost circuits from the discrete components.

    The low-side and high-side of V-I conversion are often referring to voltage to current conversion, which is slightly different from 4-20mA transmitter (similar design approach), and you have to check to loop stability for the V-I conversion as well. Please be specific what you are trying to do. 

    Best,

    Raymond