AD590KF

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Series Information for AD590KF - Analog Devices

Features

  • feature
    Linear current output: 1 u03bcA/K Wide temperature range: u221255u00b0C to +150u00b0C Probe-compatible ceramic sensor package 2-terminal device: voltage in/current out Laser trimmed to u00b10.5u00b0C calibration accuracy (AD590M) Excellent linearity: u00b10.3u00b0C over full range (AD590M) Wide power supply range: 4 V to 30 V Sensor isolation from case Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52, 8-lead SOIC, and die form
AD590KF image
Not RoHS Compliant

Description

IC TEMPERATURE TRANSDUCER 590

The AD590 is a 2-terminal integrated circuit temperature trans- ducer that produces an output current proportional to absolute temperature. For supply voltages between 4 V and 30 V, the device acts as a high impedance, constant current regulator passing 1 μA/K. Laser trimming of the chip’s thin-film resistors is used to calibrate the device to 298.2 μA output at 298.2 K (25°C). The AD590 should be used in any temperature-sensing application below 150°C in which conventional electrical temperature sensors are currently employed. The inherent low cost of a monolithic integrated circuit combined with the elimination of support circuitry makes the AD590 an attractive alternative for many temperature measurement situations. Linearization circuitry, precision voltage amplifiers, resistance measuring circuitry, and cold junction compensation are not needed in applying the AD590. In addition to temperature measurement, applications include temperature compensation or correction of discrete components, biasing proportional to absolute temperature, flow rate measure- ment, level detection of fluids and anemometry. The AD590 is available in die form, making it suitable for hybrid circuits and fast temperature measurements in protected environments. The AD590 is particularly useful in remote sensing applications. The device is insensitive to voltage drops over long lines due to its high impedance current output. Any well-insulated twisted pair is sufficient for operation at hundreds of feet from the receiving circuitry. The output characteristics also make the AD590 easy to multiplex: the current can be switched by a CMOS multiplexer, or the supply voltage can be switched by a logic gate output.

Specifications

IC Output Type:
Current
Sensing Accuracy Range:
± 2.5°C
Sensing Temperature Min:
-55°C
Sensing Temperature Max:
+150°C
Sensor Case Style:
Flatpack
No. of Pins:
2Pins
Supply Voltage Min:
4V
Supply Voltage Max:
30V
Product Range:
AD590 Series
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (07-Jul-2017)
Accuracy:
2.5°C
Amplifier Type:
Temperature Transducer
Base Number:
590
IC Generic Number:
590
Logic Function Number:
590
Operating Temperature Max:
150°C
Operating Temperature Range:
-55°C to +150°C
Output Current:
298.2µA
Sensor / Transducer Type:
Temperature
Supply Voltage Range:
4V to 30V
Temperature Max:
150°C
Temperature Sensing Range:
-55°C to +150°C
Termination Type:
Surface Mount Device

Alternate Descriptions

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Temperatursignalumformer, Analog, Flachpack, 2-Pin, –55 → +150 °C, ±2.5°C AD590 Montage-Typ : SMD Betriebstemperatur min. : –55 °C Arbeitsspannnung min. : 4 V Arbeitsspannnung max. : 30 V Länge : 6.1mm Höhe : 1.27mm Breite : 2.36mm, Analog Devices, MPN: AD590KF
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