Overview
The AD22100SRZ-REEL7, produced by Analog Devices Inc., is a monolithic temperature sensor with integrated signal conditioning. This device operates over a wide temperature range of -50°C to +150°C, making it suitable for various applications including HVAC systems, instrumentation, and automotive environments. 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) by using the ADC's power supply as a reference.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Transfer Function | VOUT = (V+/5 V) × [1.375 V + (22.5 mV/°C) × TA] | V | ||
| Temperature Coefficient | (V+/5 V) × 22.5 mV/°C | mV/°C | ||
| Output Characteristics - Error at TA = 25°C | ±0.5 | ±2.0 | °C | |
| Nominal Output Voltage at TA = 25°C | 1.938 V | V | ||
| Power Supply Operating Voltage | 4.0 | 5.0 | 6.5 | V |
| Quiescent Current | 500 | 650 | µA | |
| Guaranteed Temperature Range | -50 to +150 | °C | ||
Key Features
- Ratiometric Output: The output voltage is proportional to the temperature times the supply voltage, making it ideal for interfacing with ADCs without the need for a precision reference voltage.
- Wide Temperature Range: Operates from -50°C to +150°C, suitable for various industrial, automotive, and HVAC applications.
- Integrated Signal Conditioning: Eliminates the need for external trimming, buffering, or linearization circuitry, simplifying system design and reducing cost.
- High Linearity: The output voltage is highly linear, with a temperature coefficient of 22.5 mV/°C.
- Minimal Self-Heating: Designed to minimize self-heating, ensuring accurate temperature measurements.
- Reverse Voltage Protection: Provides protection against reverse voltage conditions.
- Low Impedance Output: High-level, low impedance output ensures reliable signal transmission.
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 PCBs.
- Electronic Thermostats: Used in thermostat applications requiring precise temperature control.
- Industrial Process Control: Employed in industrial processes that require accurate temperature monitoring.
- Instrumentation: Used in various instrumentation applications where precise temperature measurement is critical.
- 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 AD22100SRZ-REEL7?
The AD22100SRZ-REEL7 operates over a temperature range of -50°C to +150°C.
- What is the output voltage function of the AD22100SRZ-REEL7?
The output voltage is given by VOUT = (V+/5 V) × [1.375 V + (22.5 mV/°C) × TA].
- What is the significance of the ratiometric output of the AD22100SRZ-REEL7?
The ratiometric output allows for cost-effective interfacing with ADCs by using the ADC's power supply as a reference, eliminating the need for a precision reference voltage.
- What are the key applications of the AD22100SRZ-REEL7?
The AD22100SRZ-REEL7 is used in HVAC systems, system temperature compensation, board level temperature sensing, electronic thermostats, industrial process control, instrumentation, and automotive applications.
- Does the AD22100SRZ-REEL7 require external signal conditioning?
No, the AD22100SRZ-REEL7 has integrated signal conditioning, eliminating the need for external trimming, buffering, or linearization circuitry.
- What is the typical quiescent current of the AD22100SRZ-REEL7?
The typical quiescent current is 650 µA.
- Is the AD22100SRZ-REEL7 protected against reverse voltage?
Yes, the AD22100SRZ-REEL7 has reverse voltage protection.
- What is the temperature coefficient of the AD22100SRZ-REEL7?
The temperature coefficient is 22.5 mV/°C.
- What package types are available for the AD22100SRZ-REEL7?
The AD22100SRZ-REEL7 is available in an 8-lead SOIC package.
- Is the AD22100SRZ-REEL7 still in production?
Yes, the AD22100SRZ-REEL7 is still in production.
