AD590KR
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Analog Devices Inc. AD590KR

Manufacturer No:
AD590KR
Manufacturer:
Analog Devices Inc.
Package:
Bulk
Description:
SENSOR ANALOG -55C-150C 8SOIC
Delivery:
Payment:
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Product Introduction

Overview

The AD590KR, produced by Analog Devices Inc., is a 2-terminal integrated circuit temperature transducer. It produces an output current that is proportional to absolute temperature. This device operates with a wide power supply range of 4 V to 30 V and is calibrated to output 298.2 μA at 25°C (298.2 K). The AD590KR is designed to eliminate the need for costly transmitters, filters, lead wire compensation, and linearization circuits, making it an attractive alternative for various temperature measurement applications.

Key Specifications

Parameter Min Typ Max Unit
Operating Voltage Range 4 30 V
Nominal Current Output @ 25°C (298.2 K) 298.2 298.2 μA
Nominal Temperature Coefficient 1 1 μA/K
Calibration Error @ 25°C ±5.0 ±2.5 °C
Absolute Error (Over Rated Performance Temperature Range) ±10 ±5.5 °C
Nonlinearity (For 8-Lead SOIC Package) ±1.5 ±1.0 °C
Repeatability ±0.1 ±0.1 °C
Long-Term Drift ±0.1 ±0.1 °C
Current Noise 40 40 pA/√Hz
Power Supply Rejection (15 V ≤ VS ≤ 30 V) 0.1 0.1 μA/V
Case Isolation to Either Lead 1010 1010 Ω
Effective Shunt Capacitance 100 100 pF

Key Features

  • High Impedance Current Output: The AD590KR provides a high impedance current output, making it insensitive to voltage drops over long lines and suitable for remote sensing applications.
  • Wide Power Supply Range: Operates with a power supply range of 4 V to 30 V.
  • Low Power Requirements: Low power consumption of 1.5 mW at 5 V and 25°C.
  • Electrical Durability: Withstands forward voltage up to 44 V and reverse voltage up to 20 V, ensuring durability against supply irregularities or pin reversal.
  • High Accuracy: Calibrated to 298.2 μA output at 25°C with minimal calibration error and nonlinearity.
  • Multiple Package Options: Available in various packages including 8-lead SOIC, 3-pin TO-52, 2-lead FLATPACK, and die form.
  • Easy Multiplexing: The current output can be switched by a CMOS multiplexer or the supply voltage can be switched by a logic gate output.

Applications

  • Temperature Measurement: Suitable for temperature-sensing applications below 150°C, replacing conventional electrical temperature sensors.
  • Remote Sensing: Ideal for remote sensing due to its high impedance current output and insensitivity to voltage drops over long lines.
  • Temperature Compensation: Used for temperature compensation or correction of discrete components.
  • Biasing Proportional to Absolute Temperature: Useful in applications where biasing is required to be proportional to absolute temperature.
  • Flow Rate Measurement and Level Detection: Can be used in flow rate measurement and level detection of fluids.
  • Anemometry: Suitable for anemometry applications.

Q & A

  1. What is the operating voltage range of the AD590KR?

    The AD590KR operates with a power supply range of 4 V to 30 V.

  2. What is the nominal current output of the AD590KR at 25°C?

    The nominal current output at 25°C (298.2 K) is 298.2 μA.

  3. What is the temperature coefficient of the AD590KR?

    The nominal temperature coefficient is 1 μA/K.

  4. What are the calibration errors for the AD590KR at 25°C?

    The calibration error at 25°C is ±5.0°C for AD590J and ±2.5°C for AD590K.

  5. How durable is the AD590KR against voltage irregularities?

    The AD590KR withstands forward voltage up to 44 V and reverse voltage up to 20 V, making it durable against supply irregularities or pin reversal.

  6. What are the available package options for the AD590KR?

    The AD590KR is available in 8-lead SOIC, 3-pin TO-52, 2-lead FLATPACK, and die form packages.

  7. Can the AD590KR be used in remote sensing applications?

    Yes, the AD590KR is particularly useful in remote sensing applications due to its high impedance current output and insensitivity to voltage drops over long lines.

  8. How does the AD590KR handle power supply variations?

    The AD590KR has excellent power supply rejection, with a maximum current change of 1 μA (equivalent to 1°C error) when the power supply changes from 5 V to 10 V.

  9. What are some common applications of the AD590KR?

    Common applications include temperature measurement, remote sensing, temperature compensation, biasing proportional to absolute temperature, flow rate measurement, level detection of fluids, and anemometry.

  10. Does the AD590KR require additional circuitry for temperature measurement?

    No, the AD590KR does not require linearization circuitry, precision voltage amplifiers, resistance measuring circuitry, or cold junction compensation.

Product Attributes

Sensor Type:Analog, Local
Sensing Temperature - Local:-55°C ~ 150°C
Sensing Temperature - Remote:- 
Output Type:Analog Current
Voltage - Supply:4V ~ 30V
Resolution:- 
Features:- 
Accuracy - Highest (Lowest):±2.5°C
Test Condition:25°C
Operating Temperature:-55°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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