AD596: Type J Thermocouple Conditioner and Setpoint Controller

Product Status:Not Recommended for New Designs

Data
Sheet

AD596 Data Sheet Rev B, 02/1998 (pdf 202kB)

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Product Details

Product Status:Not Recommended for New Designs

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Newer Alternatives:

AD8496: 8-lead MSOP with 5mV/C output, single supply operation and improved accuracy for J type thermocouples.

Model	Package	Price* (100-499)	Price* 1000 pcs
AD596AHZ Status: Production	ROUND HEADER/METAL CAN	$9.65	$7.77

The AD596/AD597 is a monolithic temperature setpoint controller which has been optimized for use at elevated temperatures such as those found in oven control applications. The device cold junction compensates and amplifies a type J or K thermocouple input to derive an internal signal proportional to temperature. The internal signal is then compared with an externally applied setpoint voltage to yield a low impedance switched output voltage. Dead-Band or switching hysteresis can be programmed using a single external resistor. Alternately, the AD596/ AD597 can be configured to provide a voltage output (10 mV/°C) directly from a type J or K thermocouple signal. It can also be used as a stand-alone voltage output temperature sensor.

The AD596/AD597 can be powered with a single supply from +5 V to +30 V, or dual supplies up to a total span of 36 V. Typical quiescent supply current is 160 µA which minimizes self-heating errors.

The AD596/AD597 H package option includes a thermocouple failure alarm that indicates an open thermocouple lead when operated in the temperature proportional measurement mode. The alarm output has a flexible format which can be used to drive relays, LEDs or TTL logic.

The device is packaged in a reliability qualified, cost effective 10-pin metal can, 8-pin plastic mini-DIP or SOIC and is trimmed to operate over an ambient temperature range from +25°C to +100°C. Operation over an extended ambient temperature range is possible with slightly reduced accuracy. The AD596 will amplify thermocouple signals covering the entire -200°C to +760°C temperature range recommended for type J thermocouples while the AD597 can accommodate -200°C to +1250°C type K inputs.

The AD596/AD597 has a calibration accuracy of ±4°C at an ambient temperature of 60°C and an ambient temperature stability specification of 0.05°C/°C from +25°C to +100°C. If higher accuracy, or a lower ambient operating temperature is required, either the AD594 (J thermocouple) or AD595 (K thermocouple) should be considered.

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FEATURES and BENEFITS

Operates with Type J (AD596) or Type K (AD597) Thermocouples
Built-In Ice Point Compensation
Temperature Proportional Operation – 10 mV/°C

Low Cost
Temperature Setpoint Operation – ON/OFF
Programmable Switching Hysteresis
High Impedance Differential Input

Typical Application Circuit for AD596

Typical Applications and Other Diagrams

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Documentation

Title	Content Type	File Type
AD596/AD597: Thermocouple Conditioner and Setpoint Controller Data Sheet (Rev B, 02/1998) (pdf, 202 kB)	Data Sheets	PDF
Design Techniques for reducing power consumption and harmful thermal events in industrial designs This webcast will present: typical analog module configuration and show how to calculate the maximum ambient temperature that the system can tolerate, new technology to reduce the power dissipated in the module (regardless of what output load is connected), then look at the performance of these devices when the supply is run from a switching regulator rather than with a linear regulator.	Webcasts	WEBCAST
ADT7301: Accurate, SPI-Compatible Temperature Sensor in SOT Package (htm) (analogZone September 1, 2003)	Product Reviews	HTM
Selection Guide: Temperature Sensors (pdf, 807 kB)	Overview	PDF
RAQs index	Rarely Asked Questions	HTML
Glossary of EE Terms	Glossary	HTML

Design Tools,Models,Drivers & Software

Title	Content Type	File Type
ADIsimThermocouple™ This tool will calculate output voltage based on thermocouple type and temperature for the AD594/AD595 thermocouple amplifiers.	ADIsim Design/Simulation Tools	HTML

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AD596 Model Options

Print Table

Model	Package	Pins	Temp. Range	Packing, Qty	Price*(100-499)	Price*1000 pcs	RoHS	View PCN/ PDN	Check Inventory/ Purchase/Sample
AD596AHZ Status: Production	ROUND HEADER/METAL CAN	10	Ind	Tube, 100	$9.65	$7.77	Y Material Info	PCN	Purchase

Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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AD596: Type J Thermocouple Conditioner and Setpoint Controller