The GH211A is an integrated Hall sensor with

output driver and frequency generation (FG)

designed for electronic commutation of brush-less

DC motor and DC fan applications. The device

includes an on-chip Hall sensor for magnetic sensing,

an amplifier that amplifies the Hall voltage, a

Schmitt trigger to provide switching hysteresis for

noise rejection, a temperature compensation circuit

to compensate the temperature drift of Hall

sensitivity, two complementary open-drain drivers

for sinking large load current. It also includes an

internal voltage regulator which is used to provide

bias voltage for internal circuits.

Place the device in a variable magnetic field, while

the magnetic flux density is larger than threshold BOP,

OUT1 will be turned on (low) and OUT2 (and FG)

will be turned off (high). This output state is held till

the magnetic flux density reversal falls below BRP

causing OUT1 to be turned off (high) and OUT2

(and FG) turned on (low).

GH211A is available in TO-94 (SIP-4L) package

GH211A ±30GS 3.5~18.0VDC 400mA TO-94 -40~85℃