PGA411-Q1: OSIN,OCOS input open

Dongbao Zhou

Part Number: PGA411-Q1

Hello,

What's the use cases for OOPENTHL for OSIN/OCOS? In a real application, if there is open of input, OOPENTHH will be triggered because of pullup and pull-down resistor sets the IZX pin state.

Thanks.

Dongbao

over 6 years ago

0 Clancy Soehren over 6 years ago

TI__Mastermind 23810 points

You're correct, either OOPENTHL or OOPENTHH will be triggered during an open condition. They are both included so that both possible orientations of pull-up/pull-down resistors are supported.

0 Dongbao Zhou over 6 years ago in reply to Clancy Soehren

TI__Expert 4170 points

When OOPENTHL will be triggered during open condition? According to my understanding, once an open happens, IZ1 will be pulled high and IZ3 will be pulled low, then OOPENTHH is triggered.

0 Clancy Soehren over 6 years ago in reply to Dongbao Zhou

TI__Mastermind 23810 points

OOPENTHL would be triggered during an open condition if IZ1 is pulled low and IZ3 is pulled high. As you can see, one or the other of these fault bits will be triggered depending on the AFE pull-up and pull-down resistor configuration.

Sensors

Sensors forum

PGA411-Q1: OSIN,OCOS input open