15Bit 3V~3.6V SPI SSOP-20-208mil Analog to Digital Converters (ADCs) ROHS
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 Q45V.
Programmable detection of RTD and cable open and
short conditions is included.
● Integration Lowers System Cost, Simplifies Design
Efforts, and Reduces Design Cycle Time
• Simple Conversion of Platinum RTD Resistance to
Digital Value
• Handles 100Ω to 1kΩ (at 0°C) Platinum RTDs
(PT100 to PT1000)
• Compatible with 2-, 3-, and 4-Wire Sensor Connections
• SPI-Compatible Interface
• 20-Pin TQFN and SSOP Packages
● High Accuracy Facilitates Meeting Error Budgets
• 15-Bit 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
• Fully Differential VREF Inputs
• 21ms (max) Conversion Time
● Integrated Fault Detection Increases System
Reliability
• ±45V Input Protection
• Fault Detection (Open RTD Element, RTD Shorted to
Out-of-Range Voltage, or Short Across RTD Element)
#CommonPartsLibrary #IntegratedCircuit #PowerManagement
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