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MAX31865 Datasheet Rtd-to-digital Converter

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: MAX31865 RTD-to-Digital Converter General.

General Description

The MAX31865 is an easy-to-use resistance-to-digital converter optimized for platinum resistance temperature detectors (RTDs).

An external resistor sets the sensitivity for the RTD being used and a precision delta-sigma ADC converts the ratio of the RTD resistance to the reference resistance into digital form.

The MAX31865’s inputs are protected against overvoltage faults as large as Q50V.

Key Features

  • S Simple Conversion of Platinum RTD Resistance to Digital Value S Handles 100Ω to 1kΩ (at 0°C) Platinum RTDs (PT100 to PT1000) S Compatible with 2-, 3-, and 4-wire Sensor Connections S Conversion Time: 21ms max S 15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125NC (Varies Due to RTD Nonlinearity) S Total Accuracy Over All Operating Conditions: 0.5NC (0.05% of Full Scale) max S ±0V Input Protection S Fully Differential VREF Inputs S Fault Detection (Open RTD Element, RTD Sho.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX3181 +3V to +5.5V / 1.5Mbps RS-232 Receivers
MAX3182 +3V to +5.5V / 1.5Mbps RS-232 Receivers
MAX31820 1-Wire Ambient Temperature Sensor
MAX31820PAR Ambient Temperature Sensor
MAX31825 Temperature Sensor
MAX3183 +3V to +5.5V / 1.5Mbps RS-232 Receivers
MAX31856 Precision Thermocouple to Digital Converter
MAX31875 Low-Power I2C Temperature Sensor
MAX31889 Temperature Sensor
MAX3189E 15kV ESD-Protected / 1Mbps / 1A RS-232 Transmitters

MAX31865 Distributor