A1260 Datasheet | Allegro MicroSystems

Features AND BENEFITS - AEC-Q100 automotive qualified - Magnetic sensing parallel to package surface - Highly sensitive switch thresholds - Symmetrical latch switchpoints - Operation from unregulated supply down to 3 V - Small package sizes - Automotive grade - - Output short-circuit protection - - Resistant to physical stress - - Reverse-battery protection - - Operation from - 40°C to 175°C junction temperature - - Solid-state reliability - - Superior temperature stability - - Supply voltage Zener clamp PACKAGES: Not to scale 3-pin SOT23W (suffix LH) 3-pin SIP, matrix HD style (suffix UA) Chopper-Stabilized Precision Vertical Hall-Effect Latch DESCRIPTION The A1260 vertical Hall-effect sensor IC is an extremely temperature-stable and stress-resistant magnetic-sensing device ideal for harsh operating environments. The sensor is actuated by alternating north and south polarity magnetic fields in plane with the device’s branded face. Two package options, the SOT23W surface-mount and SIP through-hole, allow sensing in a variety of orientations with respect to the mounting position. Superior high-temperature performance up to 175°C junction temperature is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. Each device includes on a single silicon chip: a voltage regulator, a Hall-voltage generator, a small-signal amplifier, chopper stabilization, a Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 m A. The on-board regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3.3 V applications, while allowing additional external resistance in series with the supply pin for greater protection against high-voltage transient events. The output is turned on when a south pole of sufficient strength perpendicular to the vertical Hall element is...