Analog Devices' widely used AD590 temperature sensor is now available in a modern 8-pin SOIC package, in addition to its original metal can (TO-52) and flat pack packages. First introduced in 1975, the AD590 has retained its popularity because of its accuracy, stability and low noise—as well as its immunity to line-voltage drops, which is particularly useful in remote sensing applications.
More About the AD590
The AD590 is a two-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature over a broad temperature range (-55 degrees C to +125 degrees C). For supply voltages between +4 V and +30 V the device acts as a high-impedance, constant-current regulator passing 1 microamp/K. Laser trimming is used to calibrate the device to 298.2 microamps output at 298.2K (+25 degrees C). The worst-case error is 3 degrees C at 25 degrees C and 4 degrees C from -55 degrees C to +125 degrees C.
Availability and Pricing
Samples of the AD590 in the SOIC package are available now with full production scheduled for the Spring of 2003. Pricing for the SOIC package is $1.50 per unit in 1,000-piece quantities. The AD590 in its original 'metal can' or TO-52 package is priced at $3.47 per unit in 1,000-piece quantities.
