Overview
The LM35CAZ is a precision integrated-circuit temperature sensor produced by National Semiconductor, now part of Texas Instruments. This device is calibrated directly in Celsius (Centigrade) and offers a linear output voltage that is proportional to the temperature. The LM35CAZ does not require any external calibration or trimming, providing typical accuracies of ±0.5°C at room temperature and ±1.5°C over its full operating temperature range. It is known for its low cost, achieved through wafer-level trimming and calibration, and its low self-heating, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Type | Analog | |
| Accuracy | ±0.5°C | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +110°C | |
| Package / Case | TO-92-3 | |
| Supply Voltage Min | 4V | |
| Supply Voltage Max | 30V | |
| Current Drain | 60 µA | |
| Self-Heating | < 0.1°C in still air | |
| Scale Factor | +10.0 mV/°C |
Key Features
- Calibrated directly in Celsius (Centigrade)
- Linear +10.0 mV/°C scale factor
- 0.5°C ensured accuracy at 25°C
- Rated for full -40°C to +110°C range
- Suitable for remote applications
- Low cost due to wafer-level trimming
- Operates from 4 to 30 volts
- Low self-heating, less than 0.1°C in still air
- Low-output impedance, making interfacing easy
Applications
- Power supplies
- Battery management
- HVAC systems
- Appliances
- Remote temperature sensing
Q & A
- What is the operating temperature range of the LM35CAZ?
The LM35CAZ operates over a temperature range of -40°C to +110°C.
- What is the accuracy of the LM35CAZ at room temperature?
The accuracy of the LM35CAZ at room temperature is ±0.5°C.
- What is the scale factor of the LM35CAZ?
The scale factor of the LM35CAZ is +10.0 mV/°C.
- How much current does the LM35CAZ draw from the supply?
The LM35CAZ draws only 60 µA from the supply.
- What is the self-heating of the LM35CAZ in still air?
The self-heating of the LM35CAZ in still air is less than 0.1°C.
- What are the typical applications of the LM35CAZ?
The LM35CAZ is typically used in power supplies, battery management, HVAC systems, appliances, and remote temperature sensing.
- What is the package type of the LM35CAZ?
The LM35CAZ is available in a TO-92-3 package.
- Is the LM35CAZ RoHS compliant?
- What is the supply voltage range for the LM35CAZ?
The supply voltage range for the LM35CAZ is from 4V to 30V.
- Does the LM35CAZ require external calibration or trimming?
No, the LM35CAZ does not require any external calibration or trimming.
