Board Mount Temperature Sensors TEMP TRANSDUCER IC

AD590 - 2-Terminal IC Temperature Transducer

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
• Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52, 8-lead SOIC, and die form

Additional Details:

The AD590 is a 2-terminal integrated circuit temperature sensor that generates an output current directly proportional to absolute temperature. With supply voltages ranging from 4 V to 30 V, it functions as a high-impedance, constant-current source, delivering 1 μA per Kelvin. The chip's thin-film resistors are laser-trimmed to ensure a precise output of 298.2 μA at 298.2 K (25°C).

The AD590 is ideal for temperature-sensing applications below 150°C, offering a cost-effective alternative to traditional electrical temperature sensors. Its monolithic design eliminates the need for additional support circuits like linearization, precision amplifiers, resistance measurement, or cold junction compensation.

Beyond temperature measurement, the AD590 is suitable for applications such as temperature compensation, biasing proportional to absolute temperature, flow rate measurement, fluid level detection, and anemometry. Available in die form, it is well-suited for hybrid circuits and rapid temperature measurement in protected environments.

The AD590 excels in remote sensing applications, thanks to its high-impedance current output, which minimizes the effect of voltage drops over long distances. A well-insulated twisted pair can transmit data over hundreds of feet to the receiving circuitry. Additionally, the AD590 is easy to multiplex, as its current can be switched using a CMOS multiplexer, or the supply voltage can be controlled by a logic gate output.

 

Thermostats

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2-Terminal IC Temperature Transducer 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 Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52, 8-lead SOIC, and die form

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Thermostats High-Precision Digital Thermometer and Thermostat

Board Mount Temperature Sensors

Board Mount Temperature Sensors Dual Remote/Local Temperature Sensor

Precision Thermocouple Amplifiers with Cold Junction Compensation

The AD7814 is a complete temperature monitoring system in aSOT-23 package or 8-lead MSOP package. It contains a bandgap temperature sensor and 10-bit ADC to monitor and digitizethe temperature reading to a resolution of 0.25°CThe AD7814 has a flexible serial interface that allows easy interfacing to most microcontrollers. The interface is compatiblewith SPI®, QSPI™, and MICROWIRE™ protocol, and is alsocompatible with DSPs. The part features a standby mode that iscontrolled via the serial interface.The AD7814’s wide supply voltage range, low supply current,and SPI-compatible interface make it ideal for a variety ofapplications, including personal computers, office equipment,and domestic appliances.PRODUCT HIGHLIGHTS The AD7814 has an on-chip temperature sensor that allows an accurate measurement of the ambient temperature. The measurable temperature range is –55°C to +125°C, with a ±2°C temperature accuracy. Supply voltage of 2.7 V to 5.5 V Space-saving 6-lead SOT-23 package and 8-lead MSOP package 10-bit temperature reading to 0.25°C resolution Standby mode that reduces the current consumption to 1 µAAPPLICATIONS Hard Disk Drives Personal Computers Electronic Test Equipment Office Equipment Domestic Appliances Process Control