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Part Number: TMP116
We are having difficulties using the TMP116 when ADD0 is grounded. Indeed, we just received a batch of PCBs that uses the TMP116. After long hours of debugging we finally identified the problem. When ADD0 is set to GND, we cannot read the MSB of the TEMP register. When ADD0 is set to V+ it works. We made sure the firmware corresponds to the right adresses.
Is there something that we are missing in the firmware when calling the chip on ADD0 grounded?
I've been trying to figure out the problem for couples days now and finally found the issue.
Long story short: I have developed a driver for the TMP116 that worked fine with the TMP116evm. We broke the eval board to only keep the tmp116 and connected it to our custom board and everything works fine. However, with the TMP116 on our custom board we are unable to get the MSB of registers 0x00 and 0x01, as stated in the question. The only difference between both is the AD0 pin. The TMP116evm had AD0 pin to V+ and the TMP116 on our custom board had AD0 to GND. When we changed the AD0 pin to GND on the TMP116evm we encountered the same problem. We can read/write every register except for the MSB of reg 0x00 and 0x01.
Thing is, now we're stuck with PCBs where the AD0 is connected to GND. Are you aware of a solution other then reworking the PCBs?
We look forward to your reply.
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