The SCEL:RTD16 circuit will provide high accuracy/resolution temperature measurements economically. It is designed to work with industry standard Pt100 or Pt1000 sensors in either 3-wire or 4-wire configurations.

The circuit used to interface the RTD combines a very high resolution analog to digital converter chip with a ratiometric front-end design to produce high accuracy, resolution and stability. We will scale this circuit for your specific needs during the definition phase of your design. Because RTDs are slightly non-linear, you may need to linearise the raw readings to get °C or °F. This is quite a simple matter with SPLat, thanks to the built in floating point arithmetic.

In the following characteristic data are typical figures to give you an idea of the performance you can expect. When negotiating an implementation of this, or any other circuit element in your custom SPLat controller, you must identify the parameters that are most critical.

A lot of the above depend on your choice of RTD sensor. We do not supply sensors.