AD596/AD597: Thermocouple Conditioner and Setpoint Controller Data Sheet (Rev. B)4/30/1984202 kB
Wider supply voltage, better initial accuracy and temperature rejection with RRO in lead-free, smaller packages
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
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.
Product Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
Thermocouple 101: Filtering a Thermocouple6/3/2019
Thermocouple 101: Open Thermocouple Detection6/3/2019
Thermocouple 101: Setting the Common Mode Voltage6/3/2019
Thermocouple 101: Measuring the Tiny Signal6/3/2019
Thermocouple 101: Cold Junction Compensation6/3/2019
Thermocouple 101: What is a Thermocouple?6/3/2019
Thermocouple 101: Compensating for Nonlinearity6/3/2019
Thermocouple 101: Thermocouple Nonlinearity6/3/2019
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|AD597AHZ||Material Declaration||Reliability Data||10-Lead TO-100|
|AD597ARZ||Material Declaration||Reliability Data||8-Lead SOIC|
|Wafer Fabrication Data|
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.