AD22151

The AD22151 is a linear magnetic field transducer. The sensor output is a voltage proportional to a magnetic field applied perpendicularly to the package top surface.

The sensor combines integrated bulk Hall cell technology and instrumentation circuitry to minimize temperature related drifts associated with silicon Hall cell characteristics. The architecture maximizes the advantages of a monolithic implementation while allowing sufficient versatility to meet varied application requirements with a minimum number of components.

Principle features include dynamic offset drift cancellation and a built-in temperature sensor. Designed for single +5 volt supply operation, the AD22151 achieves low drift offset and gain operation over 40°C to +150°C. Temperature compensation can accommodate a number of magnetic materials commonly utilized in economic position sensor assemblies.

The transducer may be configured for specific signal gains dependent upon application requirements. Output voltage can be adjusted from fully bipolar (reversible) field operation to fully unipolar field sensing.

The voltage output achieves near rail-to-rail dynamic range, capable of supplying 1 mA into large capacitive loads. The signal is ratiometric to the positive supply rail in all configurations.