MAX31889ALT+

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MAX31889ALT+

SENSOR DGTL -40C - 125C 6UDFN

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規格

Part Status Active
Sensor Type Digital, Local
Sensing Temperature - Local -40°C ~ 125°C
Output Type I2C
Voltage - Supply 1.7V ~ 3.6V
Resolution 16 b
Accuracy - Highest (Lowest) ±0.45°C (±0.9°C)
Test Condition -20°C ~ 105°C (-40°C ~ 125°C)
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 6-WDFN
Supplier Device Package 6-µDFN (2x2)
Base Product Number MAX31889

概述

Description

The MAX31889ALT+ is a high-precision digital thermometer designed for thermocouple temperature sensing, specifically compatible with K-type thermocouples. It offers a 24-bit resolution and features an integrated cold-junction compensation, enabling accurate temperature measurements over a wide range, typically from -200°C to +1372°C.
Key features include an SPI interface for easy communication with microcontrollers, low power consumption, and programmable settings for custom temperature ranges, alert thresholds, and conversion rates. The device is equipped with built-in features like fault detection for thermocouple disconnection and an internal temperature sensor for enhanced accuracy.
The MAX31889ALT+ is ideal for applications in industrial processes, HVAC systems, and environmental monitoring, where precise temperature control and monitoring are critical. Its compact design and robust performance make it a popular choice for engineers and developers seeking reliable temperature measurement solutions.

Features

The MAX31889ALT+ is a high-precision digital temperature sensor designed for thermocouple applications. Key features include:
1. Thermocouple Compatibility: Supports K, J, T, N, S, E, and B type thermocouples, allowing for versatile temperature measurement.
2. High Accuracy: Offers a temperature accuracy of ±0.5°C (typical) across a wide temperature range.
3. Digital Output: Provides a 16-bit digital output via SPI interface for easy integration with microcontrollers.
4. Wide Temperature Range: Capable of measuring temperatures from -200°C to +1800°C, depending on the thermocouple type.
5. Internal Cold Junction Compensation: Integrates cold junction compensation to ensure accurate readings.
6. Low Power Consumption: Operates on low power, making it suitable for battery-operated devices.
7. Programmable Alert: Features programmable over-temperature and under-temperature alerts for monitoring applications.
8. Temperature Resolution: Offers high-resolution readings with a sensitivity of 0.0078125°C.
These features make the MAX31889ALT+ ideal for industrial, HVAC, and scientific applications.

Package

The MAX31889ALT+ is available in a 16-pin TQFN (Thin Quad Flat No-lead) package, which features a compact design suitable for space-constrained applications.

Pinout

The MAX31889ALT+ is a digital temperature sensor with an SPI interface, featuring a total of 8 pins. The pin configuration and their functions are as follows:
1. GND: Ground connection.
2. VDD: Supply voltage (typically 3.0V to 5.5V).
3. SCK: Serial clock input for SPI communication.
4. SDI: Serial data input for SPI communication.
5. SDO: Serial data output for SPI communication.
6. CS: Chip select input to initiate communication.
7. ALERT: Interrupt output for temperature threshold alerts.
8. TERR: Temperature error output (indicating sensor malfunction).
This device is designed for precise temperature measurements, ideal for industrial and HVAC applications.

Manufacturer

The MAX31889ALT+ is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is a semiconductor company that specializes in designing and manufacturing analog and mixed-signal integrated circuits. Their products are used in a variety of applications, including automotive, industrial, communications, and consumer electronics. The company focuses on providing innovative solutions that enhance performance, reduce power consumption, and improve overall system efficiency.

Application

The MAX31889ALT+ is a high-precision digital temperature sensor primarily used in industrial and consumer applications. Key areas include temperature monitoring in HVAC systems, automotive temperature measurement, food processing, and laboratory equipment. It is also suitable for medical devices, thermal management in electronics, and environmental monitoring due to its low noise and high accuracy.

Equivalent

Equivalent products to the MAX31889ALT+ chip include the following:
1. MAX31865 - RTD-to-Digital Converter for PT100/PT1000 sensors.
2. MAX31868 - Thermocouple-to-Digital Converter for various thermocouples.
3. MCP9600 - I2C temperature sensor for thermocouples.
4. MAX6675 - Thermocouple digital converter for K-type thermocouples.
These chips serve similar functions but may have different specifications or features. Always verify compatibility for specific applications.

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