Packaging Details
- Unit Type:piece
- Package Weight:0.01kg (0.02lb.)
- Package Size:1cm x 1cm x 1cm (0.39in x 0.39in x 0.39in)
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MAX31865 Thermocouple RTD Converter Board DC 3V-5V Thermoelectric Couple Temperature Sensor Detector Thermistor Voltage Protect
MAX31865 RTD-to-Digital Converter
Maxim Integrated¡¯s single-chip, RTD-to-Digital converter reduces costs by 50%
Image of Maxim Integrated\`s MAX31865 RTD-to-Digital ConverterThe Maxim 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, and a precision delta-sigma ADC converts the ratio of the RTD resistance to the reference resistance into digital form. The MAX31865 inputs resist overvoltage faults as large as ±50 V. Programmable detection of RTD open, cable open, and short conditions is included.
The MAX31865 simply and elegantly solves the common industrial design problem of digitizing a platinum RTD (such as a PT100 or PT1000) resistance, protects against ±50 V input overvoltages, and detects sensor and cable faults. In addition, the device simplifies resistance measurement by eliminating the precisely matched current sources used for 3-wire sensor connections in conventional designs. The built-in overvoltage protection (OVP) also eliminates the need for external protection circuitry, which lowers cost, reduces board space, and increases factory uptime.
Features:
1.Integration Lowers System Cost, Simplifies Design Efforts, and Reduces Design Cycle Time
Simple Conversion of Platinum RTD Resistance to Digital Value
Handles 100¥Ø to 1k¥Ø (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
2.High Accuracy Facilitates Meeting Error Budgets
15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125°C (Varies Due to RTD Nonlinearity)
Total Accuracy Over All Operating Conditions: 0.5°C (0.05% of Full Scale) max
Fully Differential VREF Inputs
21ms (max) Conversion Time
3.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)
Application:
Industrial Equipment
Instrumentation
Medical Equipment
Package Included:
1 x MAX31865 RTD-to-Digital Converter Board
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