3240 Datasheet - Allegro MicroSystems

3240 CHOPPER-STABILIZED/ PRECISION HALL-EFFECT SWITCH

Chopper-Stabilized Technique. The Hall element can be considered as a resistor array similar to a Wheatstone bridge. A large portion of the offset is a result of the mismatching of these resistors. These devices use a proprietary dynamic offset cancellation technique, with an internal high-frequency.

3240 Suffix ‘ LT’ & ‘ UA’ Pinning CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH The A3240 Hall-effect switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended temperature ranges to +150°C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The .

3240 Features

* I I I I I I I Resistant to Physical Stress Superior Temperature Stability Output Short-Circuit Protection Operation From Unregulated Supply Reverse Battery Protection Solid-State Reliability Small Size Always order by complete part number: the prefix ‘A’ + the basic fourdigit part number + a suffix

3240_AllegroMicroSystems.pdf