Overview
The AD22100ST, manufactured by Analog Devices Inc., is a monolithic temperature sensor with on-chip signal conditioning. This device is designed to operate over a wide temperature range of −50°C to +150°C, making it highly versatile for various industrial, automotive, and HVAC applications. The AD22100ST features a ratiometric output voltage that is proportional to the supply voltage, simplifying its integration with analog-to-digital converters (ADCs) and reducing system complexity and cost.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage | 4.0 | 5.0 | 6.5 | V |
| Quiescent Current | 500 | 650 | µA | |
| Guaranteed Temperature Range | -50 | 150 | °C | |
| Temperature Coefficient | 22.5 mV/°C | |||
| Output Voltage at 25°C | 1.938 | V | ||
| Accuracy at 25°C | ±0.5 | ±2.0 | °C | |
| Package | TO-92-3, TO-226-3 (TO-226AA) |
Key Features
- Ratiometric Output: The output voltage is proportional to the supply voltage, making it ideal for use with analog-to-digital converters without the need for a precision reference.
- On-Chip Signal Conditioning: Eliminates the need for external trimming, buffering, or linearization circuitry, simplifying system design and reducing cost.
- Wide Temperature Range: Operates from −50°C to +150°C, suitable for various industrial and automotive applications.
- High Accuracy: Accuracy of ±2°C over the guaranteed temperature range.
- Reverse Voltage Protection and Minimal Self-Heating: Ensures robust operation and accuracy in diverse environments.
- High Level, Low Impedance Output: Capable of withstanding an indefinite short circuit to either ground or the power supply.
Applications
- HVAC Systems: Ideal for temperature sensing and control in heating, ventilation, and air conditioning systems.
- System Temperature Compensation: Used for compensating temperature variations in electronic systems.
- Board Level Temperature Sensing: Suitable for monitoring temperature on circuit boards.
- Electronic Thermostats: Used in thermostat applications requiring precise temperature control.
- Industrial Process Control and Instrumentation: Applicable in various industrial processes and instrumentation where accurate temperature measurement is crucial.
- Automotive Applications: Used in automotive systems for temperature monitoring and control.
Q & A
- What is the operating temperature range of the AD22100ST?
The AD22100ST operates over a temperature range of −50°C to +150°C.
- What is the output type of the AD22100ST?
The output type is analog voltage.
- What is the temperature coefficient of the AD22100ST?
The temperature coefficient is 22.5 mV/°C).
- What is the typical quiescent current of the AD22100ST?
The typical quiescent current is 650 µA).
- What are the common applications of the AD22100ST?
Common applications include HVAC systems, system temperature compensation, board level temperature sensing, electronic thermostats, industrial process control, instrumentation, and automotive applications).
- What is the package type of the AD22100ST?
The package types are TO-92-3 and TO-226-3 (TO-226AA)).
- Does the AD22100ST require external signal conditioning?
No, the AD22100ST has on-chip signal conditioning, eliminating the need for external trimming, buffering, or linearization circuitry).
- How does the AD22100ST handle reverse voltage?
The AD22100ST has reverse voltage protection, ensuring robust operation).
- What is the accuracy of the AD22100ST at 25°C?
The accuracy at 25°C is ±2°C).
- Can the AD22100ST drive loads to the V+ power supply?
No, the AD22100ST is intended to drive grounded loads due to its limited current sinking ability).
