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TPL0401B-10-Q1: TPL0401B Mismatch Resistance Value

Timothy Logan
Mastermind 37165 points

Part Number: TPL0401B-10-Q1

Hello,

I am running into an issue where my programmed resistance value is not matching the Table 1 from the datasheet and I fear that I am either misinterpreting the table or doing something wrong in my schematic:

Note GND and GND_IC are shorted.

In my case, if I write 0x77 to the device I am getting a resistance value when measured between HW of 760ohm (versus 700ohm) and 681ohm at 0x78. I have verified on the layout that there are no other paths in my measurement that would be adding the resistance- and just wanted to ask if there was something obvious in my schematic that would be causing the added resistance.

Thanks and Best Regards,
Tim