Overview
The AD592CN is a precision IC temperature transducer produced by Analog Devices Inc. It is a two-terminal monolithic integrated circuit that provides an output current proportional to absolute temperature. This device operates over a wide range of supply voltages, acting as a high impedance temperature-dependent current source of 1 µA/K. The AD592CN is known for its high accuracy, stability, and repeatability, making it an ideal substitute for older sensor technologies such as thermistors, RTDs, and thermocouples.
Key Specifications
| Parameter | AD592AN | AD592BN | AD592CN | Units |
|---|---|---|---|---|
| Calibration Error @ +25°C | 1.5 - 2.5 | 0.7 - 1.0 | 0.3 - 0.5 | °C |
| Error over Temperature (0°C to +70°C) | 1.8 - 3.0 | 0.8 - 1.5 | 0.4 - 0.8 | °C |
| Nonlinearity (0°C to +70°C) | 0.15 - 0.35 | 0.1 - 0.25 | 0.05 - 0.15 | °C |
| Error over Temperature (-25°C to +105°C) | 2.0 - 3.5 | 0.9 - 2.0 | 0.5 - 1.0 | °C |
| Nonlinearity (-25°C to +105°C) | 0.25 - 0.5 | 0.2 - 0.4 | 0.1 - 0.35 | °C |
| Supply Voltage Range | +4 V to +30 V | V | ||
| Operating Temperature Range | -25°C to +105°C | °C | ||
| Package | Plastic TO-92 | |||
Key Features
- Wide Operating Temperature Range: The AD592CN operates between -25°C and +105°C, making it suitable for a variety of applications.
- Single Supply Operation: It can operate with a single supply voltage ranging from +4 V to +30 V.
- High Accuracy and Linearity: The device offers high accuracy and linearity, with minimal nonlinearity errors, especially in the AD592CN grade.
- High Impedance Current Output: The AD592CN provides a high impedance current output, making it immune to voltage drops and noise over long lines.
- Electrical Ruggedness: The device is electrically rugged and can withstand supply irregularities and reverse voltages up to 20 V.
- Easy Multiplexing: The signal current can be switched by a CMOS multiplexer or the supply voltage can be enabled with a tri-state logic gate.
Applications
- Appliance Temperature Sensing: Used in household appliances for temperature monitoring and control.
- Automotive Temperature Measurement and Control: Employed in automotive systems for temperature measurement and control.
- HVAC System Monitoring: Utilized in heating, ventilating, and air conditioning systems for temperature monitoring.
- Industrial Temperature Control: Used in industrial settings for precise temperature control and monitoring.
- Thermocouple Cold Junction Compensation: Helps in compensating for cold junction errors in thermocouple applications.
- Board-Level Electronics Temperature Diagnostics: Used for diagnosing temperature issues in electronic boards).
- Remote Sensing Applications: Ideal for remote sensing due to its immunity to voltage noise and drops over long lines).
Q & A
- What is the operating temperature range of the AD592CN?
The AD592CN operates between -25°C and +105°C).
- What is the supply voltage range for the AD592CN?
The AD592CN can operate with a single supply voltage ranging from +4 V to +30 V).
- How accurate is the AD592CN in terms of temperature measurement?
The AD592CN offers high accuracy, with calibration errors as low as 0.3°C to 0.5°C at +25°C for the CN grade).
- What makes the AD592CN immune to voltage noise and drops?
The high impedance current output of the AD592CN makes it immune to voltage drops and noise over long lines).
- Can the AD592CN be multiplexed easily?
Yes, the signal current of the AD592CN can be switched by a CMOS multiplexer or the supply voltage can be enabled with a tri-state logic gate).
- What are some common applications of the AD592CN?
Common applications include appliance temperature sensing, automotive temperature measurement, HVAC system monitoring, industrial temperature control, and remote sensing applications).
- What is the package type of the AD592CN?
The AD592CN is packaged in a plastic TO-92 case).
- Is the AD592CN electrically rugged?
Yes, the AD592CN is electrically rugged and can withstand supply irregularities and reverse voltages up to 20 V).
- How does the AD592CN achieve its temperature proportional output?
The AD592CN uses a fundamental property of silicon transistors to realize its temperature proportional output, converting the difference in base-emitter voltages to a PTAT current).
- What are the benefits of using the AD592CN over older sensor technologies?
The AD592CN offers higher accuracy, linearity, and stability compared to older technologies like thermistors, RTDs, and thermocouples, and it does not require expensive linearization circuitry or precision voltage references).
