AFE Analog Front End Practical RTD Interface Solutions (STM32 Drive) for 4-Wire PT100 RTD Sensor

AFE Analog Front End Practical RTD Interface Solutions (STM32 Drive) for 4-Wire PT100 RTD Sensor

Description:
This solution is highly recommended by countries all over the world and chip manufacturers (for TI, ADI, Maxim and microchip).

The analog front end is based on the constant current source excitation balance four-wire measurement method. For the constant current source, we measure the constant current stability of the circuit at 1.000000mA by an electrometer, and use a femtoampere-level bias current op amp. The voltage reference has a maximum temperature drift of 3ppm/°C. The test board comes with LTC2400ADC with a noise of 0.3ppm, ensuring 24bit without loss of code.

The board is suitable for use with first- or second-class platinum resistors. It can be applied to scenarios where there is no room for error in the measurement temperature. With reasonable digital filtering, noise-free resolution can be down to 3 or even 4 decimal places (e.g. 100.000°C or 100.0000°C).

Package Included:
- 1 x Analog Front End

Packaging Details:
- Weight: 0.22kg