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AD594CD

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Monolithic Thermocouple Amplifiers with Cold Junction Compensation

Manufacturer : Analog Devices, Inc
Package/Case : SOP
Product Categories : Operational Amplifiers
Datasheet: AD594CD Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 21

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AD594CD Product Details

PRODUCT DESCRIPTION

The AD594/AD595 is a complete instrumentation amplifier and thermocouple cold junction compensator on a monolithic chip. It combines an ice point reference with a precalibrated amplifier to produce a high level (10 mV/°C) output directly from a thermocouple signal. Pin-strapping options allow it to be used as a linear amplifier-compensator or as a switched output setpoint controller using either fixed or remote setpoint control. It can be used to amplify its compensation voltage directly, thereby converting it to a stand-alone Celsius transducer with a low impedance voltage output. 

The AD594/AD595 includes a thermocouple failure alarm that indicates if one or both thermocouple leads become open. The alarm output has a flexible format which includes TTL drive capability. 

The AD594/AD595 can be powered from a single ended supply (including +5 V) and by including a negative supply, temperatures below 0°C can be measured. To minimize self-heating, an unloaded AD594/AD595 will typically operate with a total supply current 160 µA, but is also capable of delivering in excess of ±5 mA to a load. 

The AD594CD is precalibrated by laser wafer trimming to match the characteristic of type J (iron-constantan) thermocouples and the AD595 is laser trimmed for type K (chromel-alumel) inputs. The temperature transducer voltages and gain control resistors are available at the package pins so that the circuit can be recalibrated for the thermocouple types by the addition of two or three resistors. These terminals also allow more precise calibration for both thermocouple and thermometer applications. 

The AD594/AD595 is available in two performance grades. The C and the A versions have calibration accuracies of ±1°C and ±3°C, respectively. Both are designed to be used from 0°C to +50°C, and are available in 14-pin, hermetically sealed, sidebrazed ceramic DIPs as well as low cost cerdip packages.

FEATURES
Pretrimmed for Type J (AD594) or
Type K (AD595) Thermocouples
Can Be Used with Type T Thermocouple Inputs
Low Impedance Voltage Output: 10 mV/8C
Built-In Ice Point Compensation
Wide Power Supply Range: +5 V to 615 V
Low Power: <1 mW typical
Thermocouple Failure Alarm
Laser Wafer Trimmed to 18C Calibration Accuracy
Setpoint Mode Operation
Self-Contained Celsius Thermometer Operation
High Impedance Differential Input
Side-Brazed DIP or Low Cost Cerdip

AD594CD

Feature

  • Pretrimmed for Type J (AD594) or Type K (AD595) Thermocouples
  • Can Be Used with Type T Thermocouple Inputs
  • Low Impedance Voltage Output: 10 mV/°C
  • Built-In Ice Point Compensation
  • Wide Power Supply Range: +5 V to ±15 V
  • Low Power: <1 mW typical
  • Thermocouple Failure Alarm
  • Laser Wafer Trimmed to 1°C Calibration Accuracy
  • Setpoint Mode Operation
  • Self-Contained Celsius Thermometer Operation
  • High Impedance Differential Input
  • Side-Brazed DIP or Low Cost Cerdip

AD594CD Pinout
(Picture: Pinout)

AD594CD Block Diagram
(Picture: Diagram)

Technical Parameters

  • Channels
  • 1
  • Output Sensitivity
  • 10 mV/°C
  • Thermocouple Type
  • J
  • Measurement Range
  • -40°C to 750°C
  • 25°C Temp Errortyp | Deg
  • 1
  • Istyp | A
  • 300µ
  • Vs+min | V
  • 5
  • Vs+max | V
  • 30

AD594CD Datasheet

  • AD594 Technical Documentation/Data sheet

AD594CD Related Products

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: How does Jotrin guarantee that AD594CD is the original manufacturer or agent of ADI?
We have a professional business development department to strictly test and verify the qualifications of ADI original manufacturers and agents. All ADI suppliers must pass the qualification review before they can publish their AD594CD devices; we pay more attention to the channels and quality of AD594CD products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of AD594CD chips? Including ADI original factory information, Operational Amplifiers application, AD594CD pictures?
You can use Jotrin's intelligent search engine, or filter by Temperature Sensor & Control Devices ; Thermocouple Interface category, or find it through Analog Devices, Inc Information page.
Q: Are the ADI's AD594CD price and stock displayed on the platform accurate?
The ADI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for AD594CD, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of AD594CD?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD594CD we delivered, we will accept the replacement or return of the AD594CD only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of AD594CD.
(3)The AD594CD is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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Analog Devices, Inc

ADI
Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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