AD597AHZ Analog Devices Inc, AD597AHZ Datasheet

IC,TEMPERATURE SENSOR,BIPOLAR,CAN,10PIN,METAL

AD597AHZ

Manufacturer Part Number

AD597AHZ

Description

IC,TEMPERATURE SENSOR,BIPOLAR,CAN,10PIN,METAL

Manufacturer

Analog Devices Inc

Datasheets

1.AD596AHZ.pdf (8 pages)

2.AD597AHZ.pdf (8 pages)

Specifications of AD597AHZ

Rohs Compliant

YES

Function

Thermocouple Conditioner

Topology

Ice Point Compensation

Sensor Type

External

Sensing Temperature

-200°C ~ 1250°C

Output Type

Voltage

Output Alarm

Yes

Output Fan

Voltage - Supply

5 V ~ 30 V

Operating Temperature

-55°C ~ 125°C

Mounting Type

Through Hole

Package / Case

TO-100, Metal Can (10 Leads)

Bandwidth

15kHz

Supply Voltage Min

Supply Voltage Max

30V

Digital Ic Case Style

SOIC

No. Of Pins

Operating Temperature Range

-55Â°C To +125Â°C

Svhc

No SVHC (15-Dec-2010)

Accuracy

4Â°C

Base Number

597

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The AD596/AD597 is a monolithic temperature setpoint con-

troller that 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 thermo-

couple input to derive an internal signal proportional to tem-

perature. 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 A, 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 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 thermo-

couple signals covering the entire –200 C to +760 C tempera-

ture 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.

*Protected by U.S. Patent No. 4,029,974.

REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

Low Cost

Operates with Type J (AD596) or Type K (AD597)

Built-In Ice Point Compensation

Temperature Proportional Operation – 10 mV/ C

Temperature Setpoint Operation – ON/OFF

Programmable Switching Hysteresis

High Impedance Differential Input

Thermocouples

PRODUCT HIGHLIGHTS

1. The AD596/AD597 provides cold junction compensation

2. The input stage of the AD596/AD597 is a high quality in-

3. Linearization not required for thermocouple temperatures

4. Cold junction compensation is optimized for ambient tem-

5. In the stand-alone mode, the AD596/AD597 produces an

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

Thermocouple Conditioner and

and a high gain amplifier which can be used as a setpoint

comparator.

strumentation amplifier that allows the thermocouple to float

over most of the supply voltage range.

close to 175 C (+100 C to +540 C for AD596).

peratures ranging from +25 C to +100 C.

output voltage that indicates its own temperature.

HYS

FUNCTIONAL BLOCK DIAGRAM

+IN

GND

HYS

+IN

V–

POINT

COMP

ICE

GND

–IN

World Wide Web Site: http://www.analog.com

AD597

Setpoint Controller

(Not to Scale)

AD596*/AD597*

ICE POINT

TOP VIEW

–

TO-100

–ALM

SOIC

COMP

–

V–

–

AD596/

AD597

+ALM

–IN

V+

OUT

V+

OUT

Related parts for AD597AHZ

AD597AHZ Summary of contents

Page 1

FEATURES Low Cost Operates with Type J (AD596) or Type K (AD597) Thermocouples Built-In Ice Point Compensation Temperature Proportional Operation – 10 mV/ C Temperature Setpoint Operation – ON/OFF Programmable Switching Hysteresis High Impedance Differential Input GENERAL DESCRIPTION The ...

Page 2

AD596/AD597–SPECIFICATIONS Model Min ABSOLUTE MAXIMUM RATINGS +V to – Common-Mode Input Voltage (–V Differential Input Voltage –V S Alarm Voltages +ALM –V S –ALM –V S Operating Temperature Range –55 Output Short Circuit to Common Indefinite TEMPERATURE MEASUREMENT ...

Page 3

Table I. Output Voltage vs. Thermocouple Temperature (Ambient + Thermocouple Type J AD596 Temperature Voltage Output –200 –7.890 –1370 –180 –7.402 –1282 –160 –6.821 –1177 –140 –6.159 –1058 –120 –5.426 –925 –100 –4.632 –782 –80 ...

Page 4

AD596/AD597 TEMPERATURE PROPORTIONAL OUTPUT MODE The AD596/AD597 can be used to generate a temperature proportional output of 10 mV/ C when operated with J and K type thermocouples as shown in Figure 1. Thermocouples pro- duce low level output voltages ...

Page 5

SETPOINT CONTROL MODE The AD596/AD597 can be connected as a setpoint controller as shown in Figure 2. The thermocouple voltage is cold junction compensated, amplified, and compared to an external setpoint voltage. The relationship between setpoint voltage and tempera- ture ...

Page 6

AD596/AD597 SINGLE AND DUAL SUPPLY CONNECTIONS In the single supply configuration as used in the setpoint con- troller of Figure 2, any convenient voltage from + +36 V may be used, with self-heating errors being minimized at lower ...

Page 7

TEMPERATURE CONSTANTAN (ALUMEL) IRON (CHROMEL) HEATER REV 470 – AD596/ 45.2k AD597* 10k 1.27M +V 5V 40.2k AD584 10k – 1k SET-POINT ADJUST 10k OP07 5k + 10M Figure 6. Temperature Measurement and Control –7– AD596/AD597 ...

Page 8

AD596/AD597 0.040 (1.02) MAX OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 10-Pin Metal Can (TO-100) REFERENCE PLANE 0.750 (19.05) 0.500 (12.70) 0.185 (4.70) 0.160 (4.06) 0.165 (4.19) 0.250 (6.35) MIN 0.110 (2.79) 0.050 (1.27) MAX 6 5 0.115 4 ...

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