ADT7475ARQZ

Product Overview

Category

ADT7475ARQZ belongs to the category of integrated circuit (IC) temperature sensors.

Use

It is primarily used for monitoring and controlling temperature in electronic devices and systems.

Characteristics

• High accuracy temperature measurement
• Digital output interface
• Programmable temperature limits
• Fan control capability
• Low power consumption

Package

ADT7475ARQZ is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of ADT7475ARQZ lies in its ability to accurately measure temperature and provide control features, making it an essential component in thermal management systems.

Packaging/Quantity

ADT7475ARQZ is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Temperature Measurement Range: -40°C to +125°C
• Resolution: 0.0625°C
• Supply Voltage: 3.0V to 5.5V
• Interface: I2C/SMBus compatible
• Fan Control: PWM output
• Operating Current: 1.5mA (typical)

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: Serial data input/output (I2C)
4. SCL: Serial clock input (I2C)
5. ALERT: Interrupt output
6. TACH: Tachometer input
7. PWM: Pulse-width modulation output
8. VDDA: Analog power supply input
9. AIN0: Analog input channel 0
10. AIN1: Analog input channel 1
11. AIN2: Analog input channel 2
12. AIN3: Analog input channel 3
13. AIN4: Analog input channel 4
14. AIN5: Analog input channel 5
15. AIN6: Analog input channel 6
16. AIN7: Analog input channel 7

Functional Features

1. Temperature Monitoring: ADT7475ARQZ accurately measures temperature using its integrated sensor.
2. Fan Control: It provides PWM output for controlling fan speed based on temperature thresholds.
3. Programmable Limits: Users can set temperature limits to trigger alerts or control actions.
4. Tachometer Input: The device can monitor fan speed through the tachometer input.
5. I2C/SMBus Interface: ADT7475ARQZ communicates with the host system using the I2C/SMBus protocol.

Advantages and Disadvantages

Advantages

• High accuracy temperature measurement
• Flexible fan control options
• Programmable temperature limits for customized applications
• Low power consumption

Disadvantages

• Limited analog input channels (only 8 available)
• Requires external components for fan control implementation

Working Principles

ADT7475ARQZ works by sensing the temperature using its integrated sensor and converting it into a digital value. This digital value is then processed by the internal circuitry to provide accurate temperature readings. The device also incorporates fan control functionality, where it adjusts the fan speed based on the temperature thresholds set by the user.

Detailed Application Field Plans

ADT7475ARQZ finds applications in various fields, including:

1. Computer Systems: It is used to monitor and control the temperature of computer processors, ensuring optimal performance and preventing overheating.
2. Industrial Automation: The device is employed in industrial automation systems to monitor temperature in machinery and equipment, enabling efficient operation and preventing damage due to excessive heat.
3. Automotive Electronics: ADT7475ARQZ is utilized in automotive electronics to monitor temperature in engine control units, powertrain systems, and other critical components, ensuring reliable performance and longevity.
4. Consumer Electronics: It is integrated into consumer electronic devices such as gaming consoles, laptops, and televisions to regulate temperature and prevent overheating.

Detailed and Complete Alternative Models

1. TMP36: A low-cost analog temperature sensor with a wide temperature range and simple interface.
2. LM35: An accurate analog temperature sensor with a linear output voltage proportional to temperature.
3. DS18B20: A digital temperature sensor with a unique address for easy integration into multi-sensor networks.
4. MAX31855: A thermocouple-to-digital converter with high accuracy and cold-junction compensation.

These alternative models offer similar temperature sensing capabilities but may differ in terms of interface, accuracy, and additional features.

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