LM81BIMTX-3/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Temperature Sensor and System Hardware Monitor

Characteristics: - Measures temperature accurately - Monitors system hardware parameters - Provides digital output - Low power consumption - Small form factor

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The LM81BIMTX-3/NOPB is a versatile integrated circuit that combines temperature sensing and system hardware monitoring capabilities in a compact package.

Packaging/Quantity: The LM81BIMTX-3/NOPB is available in tape and reel packaging, with 250 units per reel.

Specifications

• Temperature Measurement Range: -40°C to +125°C
• Accuracy: ±2°C
• Supply Voltage: 2.7V to 5.5V
• Current Consumption: 200µA (typical)
• Digital Output: I2C Interface
• Resolution: 9 bits
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM81BIMTX-3/NOPB features an 8-pin SOIC package with the following pin configuration:

1. VDD: Supply voltage 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 for temperature alert
6. TACH: Tachometer input for fan speed monitoring
7. VCC: Supply voltage output for external devices
8. NC: No connection

Functional Features

1. Temperature Sensing: The LM81BIMTX-3/NOPB accurately measures temperature within the range of -40°C to +125°C.
2. System Hardware Monitoring: It monitors various system hardware parameters such as voltage, fan speed, and current.
3. Digital Output: The LM81BIMTX-3/NOPB provides a digital output through the I2C interface, allowing easy integration with microcontrollers and other digital systems.
4. Low Power Consumption: With a typical current consumption of 200µA, the LM81BIMTX-3/NOPB is designed for energy-efficient applications.
5. Small Form Factor: The compact 8-pin SOIC package enables space-saving integration in electronic devices.

Advantages and Disadvantages

Advantages: - Accurate temperature measurement - Versatile system hardware monitoring capabilities - Digital output simplifies integration - Low power consumption prolongs battery life - Compact form factor allows for flexible placement

Disadvantages: - Limited temperature measurement range (-40°C to +125°C) - Accuracy of ±2°C may not be sufficient for certain applications - Requires external components for complete system monitoring

Working Principles

The LM81BIMTX-3/NOPB utilizes an internal temperature sensor and analog-to-digital converter (ADC) to measure temperature accurately. It communicates with the host system through the I2C interface, providing temperature readings and system hardware monitoring data. The LM81BIMTX-3/NOPB operates within the specified supply voltage range and continuously monitors the connected hardware parameters.

Detailed Application Field Plans

The LM81BIMTX-3/NOPB finds application in various fields, including:

1. Personal Computers: Monitoring CPU temperature, fan speed, and voltage levels for optimal performance and protection against overheating.
2. Industrial Equipment: Temperature monitoring in machinery, control systems, and power electronics to ensure safe operation and prevent damage due to excessive heat.
3. Automotive Electronics: Monitoring temperature in engine compartments, battery management systems, and climate control units for efficient and reliable operation.
4. Consumer Electronics: Temperature monitoring in smartphones, tablets, and gaming consoles to prevent overheating and optimize performance.

Detailed and Complete Alternative Models

1. LM75A: Digital temperature sensor with I2C interface and ±2°C accuracy.
2. TMP36: Analog temperature sensor with a wide operating range (-40°C to +125°C) and ±1°C accuracy.
3. MAX31725: Integrated temperature sensor and system monitor with extended temperature range (-55°C to +125°C) and high accuracy (±0.5°C).

These alternative models offer similar functionality to the LM81BIMTX-3/NOPB and can be considered based on specific application requirements.

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