Overview
The AD22100AR-REEL7, produced 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 suitable for various applications in HVAC, instrumentation, and automotive sectors. The AD22100 eliminates the need for external trimming, buffering, or linearization circuitry, thereby simplifying system design and reducing overall system cost. Its ratiometric output voltage is proportional to the temperature times the supply voltage, which facilitates cost-effective interfacing with analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Transfer Function | VOUT = (V+/5 V) × [1.375 V + (22.5 mV/°C) × TA] | |||
| Temperature Coefficient | (V+/5 V) × 22.5 mV/°C | |||
| Output Characteristics - Error at TA = 25°C | ±0.5 | ±2.0 | °C | |
| Output Characteristics - Nominal Output Voltage at TA = 25°C | 1.938 V | |||
| Power Supply - Operating Voltage | 4.0 | 5.0 | 6.5 | V |
| Power Supply - Quiescent Current | 500 | 650 | µA | |
| Temperature Range - Guaranteed Temperature Range | -50 to +150 | °C | ||
Key Features
- Ratiometric Output: The output voltage is proportional to the temperature times the supply voltage, facilitating easy integration with ADCs without the need for a precision reference.
- Wide Temperature Range: Operates from -50°C to +150°C, making it suitable for a variety of applications.
- On-Chip Signal Conditioning: Eliminates the need for external trimming, buffering, or linearization circuitry, simplifying system design and reducing cost.
- Low Self-Heating: Minimal self-heating ensures accurate temperature measurements.
- High Level, Low Impedance Output: Provides a robust output signal.
- Reverse Voltage Protection: Enhances device reliability and protection.
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 temperatures on circuit boards.
- Electronic Thermostats: Used in thermostat applications requiring precise temperature control.
- Industrial Process Control: Employed in industrial settings for temperature monitoring and control.
- Instrumentation: Used in various instrumentation applications requiring accurate temperature measurements.
- Automotive: Suitable for automotive applications due to its wide operating temperature range and robust design.
Q & A
- What is the operating temperature range of the AD22100AR-REEL7?
The AD22100AR-REEL7 operates over a temperature range of -50°C to +150°C.
- What is the output voltage function of the AD22100AR-REEL7?
The output voltage is given by VOUT = (V+/5 V) × [1.375 V + (22.5 mV/°C) × TA].
- Does the AD22100AR-REEL7 require external signal conditioning?
No, the AD22100AR-REEL7 has on-chip signal conditioning, eliminating the need for external trimming, buffering, or linearization circuitry.
- What is the typical quiescent current of the AD22100AR-REEL7?
The typical quiescent current is 650 µA.
- What are some common applications of the AD22100AR-REEL7?
Common applications include HVAC systems, system temperature compensation, board level temperature sensing, electronic thermostats, industrial process control, instrumentation, and automotive applications.
- Does the AD22100AR-REEL7 have reverse voltage protection?
- How does the ratiometric nature of the AD22100AR-REEL7 benefit its use with ADCs?
The ratiometric nature allows the use of the ADC's +5 V power supply as a reference, eliminating the need for a precision reference and reducing cost.
- What is the nominal output voltage at 25°C for the AD22100AR-REEL7?
The nominal output voltage at 25°C is 1.938 V.
- What is the temperature coefficient of the AD22100AR-REEL7?
The temperature coefficient is (V+/5 V) × 22.5 mV/°C.
- Is the AD22100AR-REEL7 suitable for high-temperature applications?
