Order samples and learn more about the op amp used in this video
https://www.ti.com/product/TLV9001?HQS=asc-amps-gpamps-amps_product_tlv9001

This temperature sensing circuit uses a resistor in series with a
negative–temperature–coefficient (NTC) thermistor to form a voltage
divider, which has the effect of producing an output voltage that is linear
over temperature. The circuit uses an op amp in a non–inverting
configuration with inverting reference to offset and gain the signal, which
helps to utilize the full ADC resolution and increase measurement accuracy.

View our portfolio of operational amplifiers
https://www.ti.com/amplifier-circuit/op-amps/overview.html?HQS=asc-amps-gpamps-amps_GPAMPS_overview

Learn more about analog signal chain in our online classroom, TI Precision Labs
https://training.ti.com/ti-precision-labs-overview?HQS=asc-amps-gpamps-amps_GPAMPS_tipl

Evaluate and prototype with amplifiers using TI’s DIYAMP-EVM
https://www.ti.com/tool/DIYAMP-EVM?HQS=asc-amps-gpamps-amps_GPAMPS_diyamp_evm

Learn more about the circuit from this video
https://www.ti.com/tool/CIRCUIT060002?HQS=asc-amps-gpamps-amps_circuit_600002

, https://i.ytimg.com/vi/by37HiEWEYk/hqdefault.jpg

source

9 Comments

  1. I didn't get the sqrt of NTC to calculate R1. What is the relationship?

  2. blah blah blah blah…… struggling to get this

  3. Slight error in the calculation of R1. The value is correct but the equation should be the geometric mean but has an addition symbol instead.

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