AN48841B
1
High sensitivity (8 mT max) due to offset cancel
circuit and a new sample and hold circuit.
Small current by using intermittent action.
(average supply current : 56 µA typ. sampling
cycle : 670 µs typ at V
CC
= 3.0 V)
Power supply voltage : 2.5 to 5.25 V
Operating ambient temperature : – 25 to + 75 C
CMOS inverter output. (no pull-up resistance)
Wheel keys / Track ball applications.
Magnetic fields polarity change from S to N or
from N to S can be detected.
Contactless switch in various moving devices to
involve reliabilities and dusty circumstances.
5 pin Plastic Small Surface Mount Package.
(SMINI Type)
AN48841B is a Hall IC (a magnetic sensor) for
3.0 V supply voltage by using Bi-CMOS technology.
In this Hall IC, a Hall element, a offset cancel
circuit, an amplifier circuit, a sample and hold
circuit, a Schmidt circuit, and output stage FET are
integrated on a single chip housed in a small
package by LSI technique.
High sensitivity due to offset cancel circuit and a
new sample and hold circuit gives you the benefits
by use of low cost magnet.
Small current by using intermittent action gives
you the benefits by low power consumption.
Magneto-electric conversion switch.
Rotation detection contactless switch.
1.8 V Supply voltage, Low current consumption, high sensitivity
CMOS Hall IC Operates for Alternating magnetic field directions
SIMPLIFIED APPLICATION
APPLICATIONS
FEATURES DESCRIPTION
Notes) This application circuit is an example. The operation of mass
production set is not guaranteed. You should perform enough
evaluation and verification on the design of mass production
set. You are fully responsible for the incorporation of the
above application circuit and information in the design of your
equipment.
Operating magnetic flux density
B = –8.0 to 8.0 mT
5
4
2
V
CC
= 3.0 V
V
OUT
VCC
GND
BHL
BW
Output Voltage
Applied magnetic flux density B
BLH
N
S
N
S
3.0V
