Small-outline package for temperature sensor

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.

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.

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 to +125C).

For supply voltages between +4 and +30V the device acts as a high-impedance, constant-current regulator passing 1uA/K.

Laser trimming is used to calibrate the device to 298.2uA output at 298.2K (+25C).

The worst-case error is 3C at 25C and 4C from -55 to +125C.

Samples of the AD590 in the SOIC package are available now with full production scheduled for Q1 2003.

Pricing for the SOIC package is $1.50 per unit in 1000-piece quantities.

The AD590 in its original 'metal can' or TO-52 package is priced at $3.47 per unit in 1000-piece quantities.

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