Overview
The AD592ANZ, produced by Analog Devices Inc., is a two-terminal monolithic integrated circuit temperature transducer. It provides an output current that is proportional to absolute temperature, making it an ideal substitute for older temperature sensing technologies such as thermistors, RTDs, diodes, and thermocouples. The device operates over a wide temperature range of –25°C to +105°C and is known for its high accuracy, stability, and repeatability. The AD592ANZ is packaged in a plastic TO-92 case, which is rated from –45°C to +125°C, and is available in three performance grades: AD592AN, AD592BN, and AD592CN.
Key Specifications
| Parameter | AD592AN | AD592BN | AD592CN |
|---|---|---|---|
| Accuracy @ +25°C | 1.5°C (min), 2.5°C (typ), 0.7°C (max) | 1.0°C (min), 1.5°C (typ), 0.3°C (max) | 0.5°C (min), 0.8°C (typ), 0.3°C (max) |
| Error over Temperature (0°C to +70°C) | 1.8°C (min), 3.0°C (typ), 0.8°C (max) | 1.5°C (min), 2.5°C (typ), 0.4°C (max) | 1.0°C (min), 1.5°C (typ), 0.5°C (max) |
| Nonlinearity (–25°C to +105°C) | 0.25°C (min), 0.5°C (typ), 0.1°C (max) | 0.2°C (min), 0.4°C (typ), 0.1°C (max) | 0.1°C (min), 0.35°C (typ), 0.05°C (max) |
| Supply Voltage | +4 V to +30 V | +4 V to +30 V | +4 V to +30 V |
| Output Current | 1 µA/K | 1 µA/K | 1 µA/K |
| Operating Temperature Range | –25°C to +105°C | –25°C to +105°C | –25°C to +105°C |
| Package | Plastic TO-92 | Plastic TO-92 | Plastic TO-92 |
Key Features
- High Accuracy and Linearity: The AD592ANZ offers high accuracy and linearity, making it suitable for precise temperature measurements.
- Wide Operating Temperature Range: It operates from –25°C to +105°C, making it versatile for various applications.
- Single Supply Operation: The device can operate with a single supply voltage ranging from +4 V to +30 V.
- High Impedance Current Output: The output current is proportional to absolute temperature, and the high impedance makes it immune to voltage drops and noise over long lines.
- Electrical Ruggedness: The device is robust against supply irregularities and reverse voltages up to 20 V.
- Multiplexing Capability: The signal current can be switched using 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.
- 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.
- Thermocouple Cold Junction Compensation: Helps in compensating for cold junction errors in thermocouple measurements.
- Board-Level Electronics Temperature Diagnostics: Used for diagnosing temperature issues in electronic boards.
- Instrumentation and Precision Electronics: Applied in various instrumentation and precision electronics for temperature readout and correction.
Q & A
- What is the operating temperature range of the AD592ANZ?
The AD592ANZ operates from –25°C to +105°C. - What is the output current of the AD592ANZ?
The output current is 1 µA/K, proportional to absolute temperature. - What are the supply voltage requirements for the AD592ANZ?
The device operates with a single supply voltage ranging from +4 V to +30 V. - Is the AD592ANZ immune to voltage noise and drops over long lines?
Yes, due to its high impedance current output, it is immune to voltage noise and drops over long lines. - Can the AD592ANZ be multiplexed?
Yes, the signal current can be switched using a CMOS multiplexer or the supply voltage can be enabled with a tri-state logic gate. - What are the typical applications of the AD592ANZ?
It is used in appliance temperature sensing, automotive temperature measurement, HVAC system monitoring, industrial temperature control, and more. - What is the package type of the AD592ANZ?
The device is packaged in a plastic TO-92 case. - How accurate is the AD592ANZ in terms of temperature measurement?
The accuracy varies by model but is typically within 0.5°C to 2.5°C depending on the performance grade. - Is the AD592ANZ electrically rugged?
Yes, it is robust against supply irregularities and reverse voltages up to 20 V. - What are the different performance grades available for the AD592?
The AD592 is available in three performance grades: AD592AN, AD592BN, and AD592CN.
