Product description: MAX31865 - amplifier for PT100 temperature probes - SPI - Adafruit 3328
Low resistance amplifier designed for use with 2, 3 and 4 cable PT100 temperature probes. Communicates via SPI bus. Operates from 3 V to 5 V.
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Product is compatible with Arduino Manufacturer prepared user guide and library with sample program for Arduino users. |
Soldering connectors are included.
PT100 probe is not included.
Specification of PT100 probe amplifier
- Supply voltage: from 3 V to 5 V
- Works with two-, three- and four-wire PT100 probes
- Interface: SPI
- Dimensions: 28 x 25,5 x 3 mm
- Weight: 2.7 g
Connection of the module
The module communicates through the SPI bus. It has 8 pins.
| Pin | Description |
|---|---|
| VIN | Power supply pin from 3 V to 5 V. |
| GND | Circuit ground. |
| 3V3 | Adjustable 3.3 V output of 100 mA. |
| CLK | SPI interface clock line. |
| SDO | Data output - MISO line of SPI interface. |
| SDI | Data input - MOSI line of SPI interface. |
| CS | Chip Select input. |
| RDY | Data readiness pin. |
Useful links |
