Dual Channel Switch Interface ICThe Allegro A6850 is designed to Interface between a Microprocessor
and a pair of 2-wire Hall Effect Sensors The A6850 uses protected
high-side low resistance DMOS MOSFETs to Switch the supply voltage
to the two Hall effect devices. Each Switch CAN be controlled independently
via individual ENABLE pins and both switches are protected with current-limiting
circuitry. The output switches are rated to operate to 26.5 V and will
source at least 25 mA per channel before current limiting.
Typical two-wire Hall Sensor applications require the user to measure the supply current to determine whether the Hall Sensor is switched on (magnetic field present) or switched off (no magnetic field present). This is usually accomplished by using an external series shunt resistor. In many systems, the sensed voltage is used as the input to a Microprocessor Analog-to-digital (A-to-D) input. This provides the system with an indication of the status of the two-wire Switch as well as provides the capability for diagnostic information if there is an open or shorted Sensor By Allegro MicroSystems, Inc. |
|
A6850 Pb-Free | A6850 Cross Reference | A6850 Schematic | A6850 Distributor |
A6850 Application Notes | A6850 RoHS | A6850 Circuits | A6850 footprint |