Description
Maxim MAX31865AAP+T Temp Monitoring System (Sensor) External Sensor SPI 3V to 3.6 V Surface Mount Digital Temperature Sensor -40 to 125C +-0.5C Serial-1 Wire, Serial-2 Wire TQFN-20
Product Attributes
Categories Integrated Circuits (ICs)
PMIC – Thermal Management
Manufacturer Maxim Integrated
Function Temp Monitoring System (Sensor)
Sensor Type External
Accuracy 0.5C(Max)
Topology ADC (Sigma Delta), Comparator, Register Bank
Output Type SPI
Output Alarm No
Output Fan No
Voltage – Supply 3V to 3.6V
Operating Temperature -40C to 125C
Mounting Type Surface Mount
Package / Case 20-WQFN Exposed Pad
Supplier Device Package 20-TQFN (5×5)
Base Part Number MAX31865 Lead free / RoHS: Compliant
The MAX31865AAP+ is a RTD to digital converter in 20 pin TQFN package. It is an easy to use resistance to digital converter optimized for platinum resistance temperature detectors (RTDs). An external resistor sets the sensitivity for RTD being used and a precision delta sigma ADC converts the ratio of the RTD resistance to reference resistance into digital form. Inputs are protected against overvoltage faults as large as ±45V. Programmable detection of RTD and cable open and short conditions is included. It is used in industrial equipment and instrumentation.
Supply voltage range is 3V to 3.6V
Operating temperature range from -40°C to 125°C, high accuracy facilitates meeting error budgets
Integration lowers system cost, simplifies design efforts and reduces design cycle time
Simple conversion of platinum RTD resistance to digital value, fully differential VREF inputs
Handles 100 ohm to 1Kohm (at 0°C) platinum RTDs (PT100 to PT1000), 21ms (max) conversion time
Compatible with 2-wire, 3-wire and 4-wire sensor connections, SPI-compatible interface
Fault detection (open RTD element, RTD shorted to out of range voltage or short across RTD element)
15bit ADC resolution, nominal temperature resolution 0.03125NC (varies due to RTD nonlinearity)
Total accuracy over all operating conditions, 0.5NC (0.05% of full scale) max
Integrated fault detection increases system reliability, ±45V input protection
Applications
Sensing & Instrumentation, Industrial, Medical
Manufacturer: Maxim
MFG Part #: MAX31865AAP+T
