PGA970: With 5-wire LVDT, where should be connected S1N, S2N and the secondary coil ground line to?

Takuto_Yoshioka

Part Number: PGA970

Hello

I am thinking about PGA970 application circuit with 5-wire LVDT.

In this case, I would like to know where should S1N pin ,S2N pin is connected to.

And I would like to know where the secondary coil ground line (Refer to the diagram below. it is the green Wire) connected to.

I would appreciate it if you could give me advice.

Thank you.

over 7 years ago

0 Takuto_Yoshioka over 7 years ago

Intellectual 360 points

Part Number: PGA970EVM

Hello.

I am thinking about how to use PGA970EVM with 5 wire LVDT.

I mean PGA970EVM web page describes that it is capable for 4, 5, 6 wire LVDT types

For instance, I could not find how to connect secondary coil ground line(Refer to the diagram below. It is green and blue line) to PGA970EVM.

In addition, any special configuration for PGA970EVM( e.g. registers, jumpers) is needed?

For example, I wonder if do I have to set S1_SEM to Single-end.

I would appreciate it if you could give me advice.

Thank you.

0 Bharat Aravamudhan over 7 years ago

TI__Genius 11015 points

Hello Takuto,

Our Application Engineer will review your question & get back with you as soon as possible.

0 Scott Cummins over 7 years ago in reply to Bharat Aravamudhan

TI__Mastermind 31655 points

Hi Yoshioka-san,

Attached is a diagram describing how to connect a 5 wire LVDT. The secondaries should be set to differential mode. You should not need to adjust the jumpers on the EVM any differently from the default.

Regards,

0 Takuto_Yoshioka over 7 years ago in reply to Scott Cummins

Intellectual 360 points

Thank you as always, Scott-san. I understood.

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PGA970: With 5-wire LVDT, where should be connected S1N, S2N and the secondary coil ground line to?