Overview
The AD594AQ, produced by Analog Devices Inc., is a monolithic thermocouple amplifier and cold junction compensator. This integrated circuit is designed to provide a complete instrumentation amplifier solution for thermocouple-based temperature measurements. It is pretrimmed for Type J thermocouples and can also be used with Type T thermocouple inputs. The AD594AQ offers a low impedance voltage output and built-in ice point compensation, making it a robust and accurate temperature measurement solution.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Power Supply Range | +5 V to +30 V | V |
| Differential Input Voltage | -VS to +VS | V |
| Output Voltage | 10 mV/°C | mV/°C |
| Operating Temperature Range | -55°C to +125°C | °C |
| Calibration Error at +25°C | ±3°C | °C |
| Stability vs. Temperature | ±0.05°C | °C |
| Package Type | 14-CDIP (0.300, 7.62mm) |
Key Features
- Pretrimmed for Type J thermocouples, with compatibility for Type T thermocouple inputs.
- Low impedance voltage output: 10 mV/°C.
- Built-in ice point compensation.
- Wide power supply range: +5 V to +30 V.
- Low power consumption: <1 mW typical.
- Thermocouple failure alarm.
- Setpoint mode operation and self-contained Celsius thermometer operation.
- High impedance differential input.
Applications
The AD594AQ is suitable for various temperature measurement applications, including industrial process control, medical devices, automotive systems, and any environment where precise thermocouple-based temperature monitoring is required. Its ability to operate over a wide temperature range and its built-in compensation features make it particularly useful in harsh or variable environments.
Q & A
- What is the primary function of the AD594AQ?
The AD594AQ is a monolithic thermocouple amplifier and cold junction compensator, designed for precise temperature measurements using thermocouples. - Which types of thermocouples is the AD594AQ pretrimmed for?
The AD594AQ is pretrimmed for Type J thermocouples and can also be used with Type T thermocouple inputs. - What is the output voltage characteristic of the AD594AQ?
The AD594AQ has a low impedance voltage output of 10 mV/°C. - What is the operating temperature range of the AD594AQ?
The operating temperature range of the AD594AQ is -55°C to +125°C. - Does the AD594AQ have built-in ice point compensation?
Yes, the AD594AQ has built-in ice point compensation. - What is the power supply range for the AD594AQ?
The power supply range for the AD594AQ is +5 V to +30 V. - Does the AD594AQ have a thermocouple failure alarm feature?
Yes, the AD594AQ includes a thermocouple failure alarm feature. - What is the typical power consumption of the AD594AQ?
The typical power consumption of the AD594AQ is less than 1 mW. - In what package type is the AD594AQ available?
The AD594AQ is available in a 14-CDIP (0.300, 7.62mm) package. - What are some common applications of the AD594AQ?
The AD594AQ is commonly used in industrial process control, medical devices, automotive systems, and other environments requiring precise thermocouple-based temperature monitoring.
