Overview
The LM95214CISDX, manufactured by Texas Instruments, is a highly accurate 11-bit digital temperature sensor designed for monitoring both local and remote diode temperatures. It features a 2-wire System Management Bus (SMBus) interface, making it ideal for applications in microprocessors, graphics processors, and other external devices. This sensor is particularly suited for systems requiring precise thermal management, such as servers, workstations, and industrial automation equipment. Its unique selling points include high accuracy, flexible configuration options, and robust thermal protection features.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Temperature Range (Local) | -40°C to +125°C | °C | |
| Temperature Range (Remote) | -40°C to +125°C | °C | |
| Resolution | 11-bit | ||
| Supply Voltage | 3V to 3.6V | V | |
| Average Supply Current | 0.57 mA | mA | Typical, at 1Hz conversion rate |
| Local Temperature Accuracy | ±2.0°C | °C | Maximum |
| Remote Temperature Accuracy | ±1.1°C | °C | Maximum |
| Output Type | SMBus | ||
| Package | 14-WSON | ||
| Operating Temperature | -40°C to +140°C | °C |
Key Features
- High accuracy with ±2.0°C local and ±1.1°C remote temperature sensing.
- Supports monitoring of up to four remote diodes, ideal for multi-processor systems.
- Programmable TCRIT outputs for system shutdown, fan control, or microcontroller interrupts.
- Digital and analog front-end filters for noise reduction.
- Offset correction registers for enhanced precision.
- Low power consumption with programmable conversion rates and shutdown modes.
Applications
The LM95214CISDX is widely used in applications requiring precise thermal management, including:
- Industrial Automation: Monitoring and controlling temperature in machinery and equipment.
- Consumer Electronics: Ensuring optimal performance and safety in devices like laptops and gaming consoles.
- Automotive Electronics: Managing thermal conditions in vehicle control systems.
- Data Centers: Preventing overheating in servers and networking equipment.
Q & A
1. What is the operating voltage range of the LM95214CISDX?
The operating voltage range is 3V to 3.6V.
2. How many remote diodes can the LM95214CISDX monitor?
It can monitor up to four remote diodes.
3. What is the temperature accuracy for local sensing?
The local temperature accuracy is ±2.0°C (maximum).
4. Does the LM95214CISDX support SMBus interface?
Yes, it features a 2-wire SMBus interface.
5. What are the TCRIT outputs used for?
TCRIT outputs can trigger system shutdown, fan control, or microcontroller interrupts.
6. What is the resolution of the temperature sensor?
The resolution is 11-bit.
7. Can the LM95214CISDX operate in low power modes?
Yes, it supports programmable conversion rates and shutdown modes for low power consumption.
8. What is the package type of the LM95214CISDX?
It comes in a 14-WSON package.
9. What is the maximum operating temperature?
The maximum operating temperature is +140°C.
10. Does the sensor include offset correction features?
Yes, it includes offset correction registers for enhanced precision.
