A3361

This is the description about A3361 and A3362 of the 2-wire, chopper-stabilized, hall-effect switches.

The A3361 and A3362 Hall-effect switches are extremely temperature-stable and stress-resistant sensors. Superior performance over temperature is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The two devices differ only in output polarity; the A3361 output current goes low in the presence of a south pole of sufficient strength; the A3362 output current goes high. Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a constant-current open-collector output. An on-board regulator permits operation with supply voltages of 3.5 to 24 volts. Noise radiation is limited by control of the output current slew rate. Three package styles provide a magnetically optimized package for most applications. Suffix 'xLH' is a miniature SOT23W low-profile surface-mount package, 'xLT' is a miniature SOT89/TO-243AA transistor package for surface-mount applications; while suffix 'xUA' is a three-lead ultra-mini-SIP for through-hole mounting.

Here are the features. (1) internal current regulator for 2-wire operation; (2) resistant to physical stress; (3) superior temperature stability; (4) operation from unregulated supply; (5) solid-state reliability; (6) small size.

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