The TX3277 is an integrated Hall sensor with
output driver designed for electronic commutation
of DC motor applications. The device
includes an on-chip Hall voltage, a Schmitt trigger
to provide switching hysteresis for noise rejection,
a temperature compensation circuit to
compensate the temperature
drift of Hall
sensitity and two complementary open-collector
drivers for sinking large load. current.It also
includes an intemal band-gap regulator which is used to provide bias voltage for intemal circuits.
Placing the device in a variable magnetic field, if
the magnetic flux density is larger than threshold
BOP,the pin DO will be turned low (on) and pin
DOB will be turmed high (ff). This output state is
held until the magnetic flux density reverses and
falls below BRP, then causes DO to be turned high
(off) and DOB turned low(on).
TX3277 is available in TO-94(SIP- 4L) package.
特点
On-Chip Hall Sensor
3.5V to 20V Supply Voltage
300mA (avg) Output Sink Current
Reversed Supply Vltage Protection
-20C to 85C Operating Temperature
Low Profile TO-94 (SIP. 4L) Package
High ESD Performance
应用
Revolution counting
Speed measurement
