Key facts
Start here
Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
The document describes the Allegro MicroSystems A3240, a chopper-stabilized precision Hall-effect switch designed for superior high-temperature performance up to +150°C. It integrates a voltage regulator, Hall-voltage generator, amplifier, Schmitt trigger, and short-circuit protected open-collector output on a single silicon chip.
Read onlineAllegro A3240 specifications
| Supply Voltage Range | 4.2 - 24 V |
|---|---|
| Output Leakage Current | - 10 mA |
| Output Saturation Voltage | 185 - 500 mV |
| Operate Point (Bop) | 35 - 50 G |
| Release Point (Bre) | 5.0 - 25 G |
Source: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
All Allegro A3240 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum continuous output current this switch can sink?
The device includes a short-circuit protected open-collector output capable of sinking up to 25 mA.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
What is the operating supply voltage range for this Hall-effect switch?
An on-board regulator permits operation with supply voltages ranging from 4.2 to 24 volts.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
What is the operate point threshold?
The operate point threshold (Bop) is typically 35 G.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
What is the release point threshold?
The release point (Bre) is typically 25 G.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
What is the maximum supply voltage?
The absolute maximum rating for supply voltage is 26.5 V.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet
Does the device include short-circuit protection?
Yes, it features a short-circuit protected open-collector output that can sink up to 25 mA.
From: Allegro A3240 Chopper-Stabilized Hall-Effect Switch Datasheet