AD22105AR-REEL

Temp Sensor Analog 8Pin SOIC N T/R

Product Details

The AD22105 is a solid state thermostatic switch. Requiring only one external programming resistor, the AD22105 can be set to switch accurately at any temperature in the wide operating range of -40°C to +150°C. Using a novel circuit architecture, the AD22105 asserts an open collector output when the ambient temperature exceeds the user-programmed setpoint temperature. The AD22105 has approximately 4°C of hysteresis which prevents rapid thermal on/off cycling.

The AD22105 is designed to operate on a single power supply voltage from +2.7 V to +7.0 V facilitating operation in battery powered applications as well as in industrial control systems. Because of low power dissipation 230 µW @ 3.3 V, self-heating errors are minimized and battery life is maximized.

An optional internal 200 kohm pull-up resistor is included to facilitate driving light loads such as CMOS inputs.

Alternatively, a low power LED indicator may be driven directly.

### Features and Benefits

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User-Programmable Temperature Setpoint

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2.0°C Setpoint Accuracy

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4.0°C Preset Hysteresis

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Wide Supply Range

+2.7 Vdc to +7.0 Vdc

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Wide Temperature Range

- 40°C to +150°C