Overview
The AD22100KR is a monolithic temperature sensor produced by Analog Devices Inc. It features on-chip signal conditioning, making it an ideal component for various applications requiring accurate temperature sensing. The sensor operates over a wide temperature range of –50°C to +150°C, which is particularly useful in HVAC, instrumentation, and automotive systems. The AD22100KR simplifies system design by eliminating the need for external trimming, buffering, or linearization circuitry, thereby reducing overall system cost.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | |||
| Sensor Type | Analog, Local | |||
| Sensing Temperature - Local | 0°C | 100°C | °C | |
| Output Type | Analog Voltage | |||
| Voltage - Supply | 4V | 5V | 6.5V | V |
| Resolution | 22.5 mV/°C | mV/°C | ||
| Accuracy - Highest (Lowest) | ±0.5°C | ±2.0°C | °C | |
| Operating Temperature | –50°C | +150°C | °C | |
| Mounting Type | Surface Mount | |||
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |||
| Quiescent Current | 500 µA | 650 µA | µA | |
Key Features
- Ratiometric Output: The output voltage is proportional to the temperature times the supply voltage, making it suitable for interfacing with analog-to-digital converters without the need for a precision reference.
- Wide Operating Temperature Range: Operates from –50°C to +150°C, making it versatile for various applications.
- On-Chip Signal Conditioning: Eliminates the need for external trimming, buffering, or linearization circuitry, simplifying system design and reducing cost.
- High Accuracy: Offers an accuracy of ±2°C over the operating temperature range.
- Low Self-Heating: Minimal self-heating ensures accurate temperature readings.
- Reverse Voltage Protection: Protects against reverse voltage conditions.
- Short-Circuit Protection: The output pin can withstand 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.
- Instrumentation: Used in various instrumentation applications requiring precise temperature measurement.
- Automotive Systems: Suitable for temperature sensing in automotive environments due to its wide operating temperature range.
- System Temperature Compensation: Used for compensating temperature variations in electronic systems.
- Board Level Temperature Sensing: Effective for monitoring temperatures at the board level in electronic devices.
- Electronic Thermostats: Employed in electronic thermostats for precise temperature control.
Q & A
- What is the operating temperature range of the AD22100KR?
The AD22100KR operates over a temperature range of –50°C to +150°C.
- What is the output type of the AD22100KR?
The output type is an analog voltage.
- What is the resolution of the AD22100KR?
The resolution is 22.5 mV/°C.
- What is the accuracy of the AD22100KR at 25°C?
The accuracy at 25°C is ±2.0°C.
- What is the package type of the AD22100KR?
The package type is 8-SOIC (0.154", 3.90mm Width).
- Does the AD22100KR have short-circuit protection?
Yes, the output pin can withstand an indefinite short circuit to either ground or the power supply.
- What are the typical applications of the AD22100KR?
Typical applications include HVAC systems, instrumentation, automotive systems, system temperature compensation, board level temperature sensing, and electronic thermostats.
- What is the quiescent current of the AD22100KR?
The quiescent current is typically 650 µA.
- Is the AD22100KR ratiometric?
Yes, the output voltage is proportional to the temperature times the supply voltage, making it ratiometric.
- Does the AD22100KR require external signal conditioning?
No, it has on-chip signal conditioning, eliminating the need for external trimming, buffering, or linearization circuitry.
