Overview
The AD597ARZ, produced by Analog Devices Inc., is a monolithic temperature setpoint controller optimized for use at elevated temperatures, particularly in applications such as oven control. This device is designed to cold junction compensate and amplify type K thermocouple inputs, providing an internal signal proportional to temperature. It can be configured to yield a low impedance switched output voltage or a direct voltage output (10 mV/°C) from the thermocouple signal. The AD597ARZ is versatile, allowing it to be used as a stand-alone voltage output temperature sensor or as part of a more complex temperature control system.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage Range | +5 | - | +30 | V |
| Dual Supply Range | - | - | 36 | V |
| Quiescent Supply Current (+VS) | 160 | - | 300 | µA |
| Quiescent Supply Current (-VS) | 100 | - | 200 | µA |
| Operating Temperature Range | -25 | - | 100 | °C |
| Thermocouple Input Range (Type K) | -200 | - | 1250 | °C |
| Output Voltage Range (Single Supply) | 0 | - | +VS - 2 | V |
| Usable Output Current | - | - | ±5 | mA |
| 3 dB Bandwidth | - | - | 15 | kHz |
| Alarm Current Capability | - | - | 20 | mA |
Key Features
- Cold Junction Compensation and Amplification: The AD597ARZ compensates and amplifies type K thermocouple inputs, providing a signal proportional to temperature.
- Setpoint Control: The device can be configured as a setpoint controller, comparing the internal temperature signal with an externally applied setpoint voltage to yield a low impedance switched output voltage.
- Flexible Output Options: It can provide either a switched output or a direct voltage output (10 mV/°C) from the thermocouple signal.
- Thermocouple Failure Alarm: The H package option includes a thermocouple failure alarm that indicates an open thermocouple lead, with a flexible output format suitable for driving relays, LEDs, or TTL logic.
- Low Power Consumption: The device has a typical quiescent supply current of 160 µA, minimizing self-heating errors.
- Wide Operating Range: It operates over an ambient temperature range from -25°C to 100°C and can handle thermocouple inputs from -200°C to 1250°C.
Applications
- Oven Control: Optimized for use in high-temperature environments such as oven control applications.
- Industrial Temperature Monitoring: Suitable for industrial settings where precise temperature monitoring and control are required.
- Aerospace and Automotive: Can be used in various high-reliability applications where temperature control is critical.
- Process Control Systems: Ideal for integrating into process control systems that require accurate temperature measurement and control.
Q & A
- What is the primary function of the AD597ARZ?
The AD597ARZ is a monolithic temperature setpoint controller that compensates and amplifies type K thermocouple inputs to provide a signal proportional to temperature.
- What are the supply voltage options for the AD597ARZ?
The device can be powered with a single supply from +5 V to +30 V or dual supplies up to a total span of 36 V.
- What is the typical quiescent supply current of the AD597ARZ?
The typical quiescent supply current is 160 µA.
- What is the operating temperature range of the AD597ARZ?
The device operates over an ambient temperature range from -25°C to 100°C.
- Can the AD597ARZ be used as a stand-alone temperature sensor?
Yes, the AD597ARZ can be used as a stand-alone voltage output temperature sensor.
- What is the thermocouple input range for the AD597ARZ?
The device can accommodate type K thermocouple inputs from -200°C to 1250°C.
- Does the AD597ARZ have a thermocouple failure alarm feature?
Yes, the H package option includes a thermocouple failure alarm feature.
- What is the output current capability of the alarm function?
The alarm function can source or sink up to 20 mA of current.
- Can the AD597ARZ be used in high-reliability applications?
Yes, the device is reliability qualified and suitable for high-reliability applications.
- What are some common applications of the AD597ARZ?
Common applications include oven control, industrial temperature monitoring, aerospace, automotive, and process control systems.
