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MAX31865ATP+
IC RTD TO DIGITAL CONVERT 20QFN
- Manufacturer
- Mfr. Part #MAX31865ATP+
- Package TQFN-20
- Datasheet
- In Stock7371
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Specifications
| Package | Tray |
| ProductStatus | Active |
| Function | Temp Monitoring System (Sensor) |
| SensorType | External |
| Accuracy | ±0.5°C(Max) |
| Topology | ADC (Sigma Delta), Comparator, Register Bank |
| OutputType | SPI |
| OutputAlarm | No |
| OutputFan | No |
| Voltage-Supply | 3V ~ 3.6V |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 20-WQFN Exposed Pad |
Overview
Description
Key features include a low-noise precision delta-sigma ADC, an on-chip temperature sensor for cold-junction compensation, and programmable fault-detection circuitry to identify open-circuit, short-circuit, or out-of-range conditions. It operates with a simple 4-wire SPI-compatible interface, which simplifies connectivity with most modern microcontrollers. The chip's wide operating temperature range makes it suitable for industrial, consumer, and scientific applications. It also features a fast conversion time and high resolution, ensuring quick and accurate temperature readings.
Overall, the MAX31865ATP+ enhances the accuracy and efficiency of temperature measurement systems by offering robust features tailored for RTD interfacing, making it a valuable component in precision temperature monitoring setups.
Features
1. RTD Compatibility: Supports 2-, 3-, and 4-wire RTD configurations, providing flexibility for various applications.
2. High Accuracy: Designed for precise temperature measurements with an accuracy of ±0.5°C and resolution options ranging from 15 to 19 bits.
3. Fault Detection: Features open circuit, short circuit, and over/under-voltage fault detection for reliable operation and diagnostics.
4. SPI Interface: Equipped with a Serial Peripheral Interface (SPI) for easy integration and communication with microcontrollers and other digital systems.
5. Internal Temperature Sensor: Includes an internal temperature sensor for cold-junction compensation, enhancing measurement accuracy.
6. Low Power Consumption: Operates efficiently with low power requirements, making it suitable for battery-powered devices.
7. Wide Operating Temperature Range: Can function in temperatures from -40°C to +125°C, suitable for various environments.
8. Compact Package: Available in a small, 20-pin TQFN package, facilitating space-saving designs in compact applications.
These features make the MAX31865ATP+ ideal for industrial and consumer applications requiring precise temperature monitoring.
Package
Pinout
1. VDD: Power supply input.
2. GND: Ground reference.
3. DOUT: SPI data output.
4. DIN: SPI data input.
5. SCLK: SPI clock input.
6. CS: Chip select input.
7. RTDIN+: Positive input for the RTD.
8. RTDIN-: Negative input for the RTD.
9. FILT+: Positive side of the filter capacitor.
10. FILT-: Negative side of the filter capacitor.
11. REFIN+: Positive input for the reference resistor.
12. REFIN-: Negative input for the reference resistor.
13. BIAS: Bias current control for the RTD.
14. FAULT: Fault indicator output.
15. N/C: Not connected.
16. VDDIO: Digital I/O supply voltage.
17-20. N/C: Not connected (varies based on specific configurations).
These pins facilitate communication and interaction with external components, allowing the MAX31865 to accurately convert RTD measurements to digital form.
Manufacturer
Application
Equivalent
1. Analog Devices ADT7310 - Known for high accuracy in temperature sensing applications.
2. Texas Instruments TMP117 - Offers precise temperature measurement with a simple interface.
3. Microchip Technology MCP9600 - Provides integrated temperature conversion and interface options.
4. MAX31855 - Another option from Maxim Integrated for thermocouple-to-digital conversion.
Each alternative may differ in specifications and features, so review datasheets to ensure compatibility with your application.
Shipping
Shipping MethodsWe
offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.
Shipping Fee Reference (DHL/FedEx):
DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.
FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.
UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.
TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.
EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.
Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.
Payments
Payment Methods
The Payment term is 100% Prepaid.
Currently, we only accept the below payment methods:
1. PayPal
2. Credit/ Debit Card
3. Wire Transfer
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