MAX31790ATI+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Temperature Sensor
• Characteristics: High accuracy, digital output, low power consumption
• Package: Thin Small Outline Package (TSOP), 16 pins
• Essence: Monolithic temperature sensor with a built-in analog-to-digital converter (ADC)
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• Resolution: 0.0625°C
• Accuracy: ±1°C (typical) at +25°C
• Interface: I2C/SMBus compatible
• Conversion Time: 27ms (typical)

Pin Configuration

The MAX31790ATI+T has the following pin configuration:

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| | | 1 8 | | | | 2 7 | | | | 3 6 | | | | 4 5 | |_______________| ```

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. ALERT#: Open-drain output that asserts when temperature exceeds programmable limits
6. OS/INT#: Open-drain output that asserts when an over-temperature condition occurs or when a conversion is complete
7. ADD0: Address select input
8. NC: No connection

Functional Features

• High Accuracy: The MAX31790ATI+T provides precise temperature measurements with a resolution of 0.0625°C and an accuracy of ±1°C (typical) at +25°C.
• Digital Output: The built-in ADC converts the analog temperature signal into a digital format, making it easy to interface with microcontrollers or other digital devices.
• Low Power Consumption: With a supply voltage range of 2.7V to 5.5V, this temperature sensor consumes minimal power, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - High accuracy ensures reliable temperature measurements. - Digital output simplifies integration with digital systems. - Low power consumption extends battery life in portable devices.

Disadvantages: - Limited temperature range (-40°C to +125°C) compared to some specialized temperature sensors. - Accuracy may vary outside the typical operating conditions.

Working Principles

The MAX31790ATI+T utilizes a bandgap temperature sensor to measure the ambient temperature. This sensor generates a voltage that is proportional to the absolute temperature. The built-in ADC converts this voltage into a digital value, which can be read through the I2C interface. The device also includes programmable registers for setting temperature limits and configuring various features.

Detailed Application Field Plans

The MAX31790ATI+T is suitable for various temperature sensing applications, including but not limited to:

1. Industrial Automation: Monitoring temperature in manufacturing processes, HVAC systems, and industrial equipment.
2. Consumer Electronics: Thermal management in laptops, smartphones, and gaming consoles.
3. Automotive: Temperature monitoring in engine control units, battery management systems, and climate control systems.
4. Medical Devices: Precise temperature measurement in medical equipment such as incubators, blood analyzers, and thermometers.

Detailed and Complete Alternative Models

1. LM35: Analog temperature sensor with a linear output voltage proportional to temperature.
2. DS18B20: Digital temperature sensor with a unique 64-bit serial code for easy integration in multi-sensor networks.
3. TMP36: Low-cost analog temperature sensor with a voltage output proportional to temperature.

These alternative models offer different features and specifications, allowing users to choose the most suitable option based on their specific requirements.

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