LM73: Could it use the I2C master to connect with LM73 SMBus?

Alpha Ting

Intellectual 550 points

Part Number: LM73
Other Parts Discussed in Thread: TMP112, TMP1075, TMP102-Q1, TMP112-Q1, TMP75-Q1, TMP175-Q1

Hi sir,

It seemed ok, but I still need your confirm.

What should I take care?

thanks.

Alpha

over 5 years ago

0 Brandon Fisher94 over 5 years ago

TI__Mastermind 28070 points

Hi Alpha,

Thank you for your question. The LM73 will connect fine to most I2C masters, provided the timing requirements are met. It is designed to be compatible with both I2C and SMBus as much as possible.

It is a very old part though. If this is a new design you may want to consider one of our newer I2C parts, such as the TMP1075 or TMP112.

Best Regards,
Brandon Fisher

0 Alpha Ting over 5 years ago in reply to Brandon Fisher94

Intellectual 550 points

Hi Brandon,

I would need an automotive grade AEC-Q100 grade2 temp sensor with alert function when temp high exceeded the programmed high limit.

Could you suggest alternative part beside LM73?

thanks.

Alpha

0 Brandon Fisher94 over 5 years ago in reply to Alpha Ting

TI__Mastermind 28070 points

Hi Alpha,

Here is a complete list of our Automotive, I2C, temperature sensors. Most of them are AEC-Q100 Grade 1 or higher, which will meet your requirement. Many also have an alert function like you are describing.

I would recommend the TMP112-Q1 or TMP102-Q1 if you are planning to use a 3.3V rail. These two devices are almost the same, but the TMP112-Q1 has better accuracy.

If you are planning to use a 5V rail, consider the TMP175-Q1 or the TMP75-Q1. Again, these two devices are the same, but with the TMP175-Q1 having better accuracy.

All 4 of the recommended parts have alert pins.

Best Regards,
Brandon Fisher