A3425 - Allegro MicroSystems

A3425 Ultra-Sensitive Dual-Channel Quadrature Hall-Effect Bipolar Switch

Chopper-Stabilized Technique. These devices use a proprietary dynamic offset cancellation technique, with an internal high-frequency clock to reduce the residual offset voltage of the Hall element that is normally caused by device overmolding, temperature dependencies, and thermal stress. This technique produces devices that have an extremely stable quiescen.

Features

I Two Matched Hall Switches On A Single Substrate I I I I I I I I 1 mm Sensor-to-Sensor Spacing Superior Temperature Stability Resistant to Physical Stress Output Short-Circuit Protection Operation From Unregulated Supply Reverse Battery Protection Solid-State Reliability Integrated ESD Protection on Outputs and Supply Always order by complete part number, e.g., A3425LK . 3425 DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH FUNCTIONAL BLOCK DIAGRAM 1 SUPPLY REG. TO ALL SUBCIRCUITS E1 DYNAMIC OFFSET CANCELLATION OUTPUT1 LOW-PASS FILTER SAMPLE & HOLD X 2 CONTROL .