What is the working principle of AD590?
AD590 is a current-type temperature sensor. It converts temperature changes into current conversion. The simplest processing is to pass a resistor (10K) after the output to convert the current into a voltage, and then through the detection voltage, the current at this time can be deduced.
What is the sensitivity of AD590?
With an AD590 having a sensitivity of 1mv/C (using a 1 Kohm resistor) at 300K the voltage produced is 0.3 volts. To achieve resolution of 1/2C with this transducer the voltages must be measured to 0.5 mv. This is possible when using a 4 3/4 digit DMM.
What is an AD590?
The AD590 is a 2-terminal integrated circuit temperature trans-ducer that produces an output current proportional to absolute temperature. The AD590 should be used in any temperature-sensing application below 150°C in which conventional electrical temperature sensors are currently employed.
What is operating voltage of AD 590?
The AD590 is electrically durable: it withstands a forward voltage of up to 44 V and a reverse voltage of 20 V.
What are RTD made of?
The traditional RTD element is constructed of a small coil of platinum, copper, or nickel wire wound to a precise resistance value around a ceramic or glass bobbin.
Is RTD analog or digital?
The device operates with a single analog power supply from 2.7 V to 3.6 V or a dual 1.8 V power supply. The digital supply has a range of 1.65 V to 3.6 V. It is specified for a temperature range of −40°C to +125°C.
What is the principle of RTD?
An RTD works by using a basic principle; as the temperature of a metal increases, so does the resistance to the flow of electricity. An electrical current is passed through the sensor, the resistance element is used to measure the resistance of the current being passed through it.
Why Pt is used in RTD?
Platinum film is used in the construction of RTDs because it is stable, provides repeatable and measurable results and has a broad temperature range. The way RTDs are constructed makes them more rugged and reliable in harsh conditions which is why it can be used in industrial and critical applications.