AD590:  Two Terminal IC Temperature Transducer

The AD590 is a two-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature. For supply voltages between 4 V and 30 V the device acts ...More

AD590:  Two Terminal IC Temperature Transducer

Product Description

The AD590 is a two-terminal integrated circuit temperature transducer 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 298.2K (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 measurement, level detection of fluids and anemometry. The AD590 is available in chip 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 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.

Features

  • Linear current output: 1 µA/K
  • Wide temperature range: -55°C to +150°C
  • Probe compatible ceramic sensor package
  • 2-terminal device: voltage in/current out
  • Laser trimmed to ±0.5°C calibration accuracy (AD590M)
  • Excellent linearity: ±0.3°C over full range (AD590M)
  • Wide power supply range: 4 V to 30 V
  • Sensor isolation from case
  • Low cost

Diagrams

AD590 Diagram
Typical Application Circuits for AD590

技术指标

Temp Range(s) -55 to +150
Output Type Analog
Sensor Output +1 µA/°K
Temp Res(°C/LSB) n/a
Supply Voltage Range +4V to +30V

浏览其他的产品

Part# Sensor Output Max Deg C Error Over Tmp Supply Voltage Range Temp Range(s) Packages Price* (1000-4999) Product Description
AD590 +1 µA/°K 5.5 +4V to +30V -55 to +150 FP-2, SOIC-8, TO-52 $2.24 2-Terminal Temperature Transducer
AD597 +10 mV/°C 4 +Vs to -Vs = 30Vmax -55 to +125 10 lead TO-100, SOIC-8 $2.78 Thermocouple Conditioner/Cold Junction Compensator/Setpoint-Controller for Type-K Thermocouple
AD596 +10 mV/°C 4 +Vs to -Vs = 30Vmax -55 to +125 10 lead TO-100 $7.25 Thermocouple Conditioner/Cold Junction Compensator/Setpoint-Controller for Type-J Thermocouple
TMP17 +1 µA/°K 3.5 +4V to +30V -40 to +105 SOIC-8 $1.55 Low Cost, Current Output Temperature Transducer
AD594 +10 mV/°C 3.5 +4.5V to +5.5V -55 to +125 Cerdip-14, DIP-14, SBDIP-14 $6.88 I.C.Thermocouple Amplifier w/ Cold Junction Compensation Pretrimmed for Type J Thermocouples
TMP37 +20 mV/°C 3 +2.7V to +5.5V +5 to +100 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, +5°C to +100°C
TMP36 +10 mV/°C 3 +2.7V to +5.5V -40 to +125 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, -40°C to +125°C,
TMP35 +10 mV/°C 3 +2.7V to +5.5V +10 to +125 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, 10°C to 125°C.
AD22103 +28 mV/°C 2.5 +2.7V to +3.6V 0 to +100 SOIC-8, TO-92 $1.40 Voltage Output 3.3 V Temperature Sensor w/ Signal Conditioning
AD22100 +22.5 mV/°C 2 +4V to +6.5V 0 to +100 SOIC-8, TO-92 $1.30 Voltage Output Temperature Sensor w/ Signal Conditioning
AC2626 +1 µA/°K 1.7 +4V to +30V -55 to +150 Stainless Steel Probe - AD590 Temperature Sensor Mounted in Stainless Steel Probe
AD595 +10 mV/°C 1 +4.5V to +5.5V -55 to +125 Cerdip-14, SBDIP-14 $6.88 I.C.Thermocouple Amplifier w/ Cold Junction Compensation Pretrimmed for Type K Thermocouples
AD592 +1 µA/°K 0.4 +4V to +30V -25 to +105 TO-92 $1.91 Current Output – Precision IC Temperature Transducer
Sorted by 25 Deg C Temperature Error (Descending) and Max Error Over Temp (Descending)

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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