Hall ICs
1
Publication date: November 2002 SPC00016AEB
AN48810B
Low current consumption, high sensitivity CMOS Hall IC
One-way magnetic field operation
■ Overview
The AN48810B is a Hall IC (a magnetic sensor) which
has 2 times or more sensitivity and a low current consump-
tion of about one three-hundredth compared with our
conventional one.
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 IC technique.
■ Features
• High sensitivity (6 mT max.) due to offset cancel circuit
and a new sample and hold circuit
• Small current by using intermittent action
• Small package (SMD)
• CMOS inverter output
■ Applications
• Flip type cellular phone, digital video camera
■ Block Diagram
Unit: mm
SMINI-5DA (Lead-free package)
4
3
5
12
3
4
21
5
0.225
0.225
2.10
±
0.10
1.65
±
0.10
1.30±0.10
Seating plane
0.80
±
0.10
0 to 0.10
0.32
±
0.10
2.00±0.10
0.22
+0.10
-0.05
0.11
+0.10 -
0.05
0.65 0.65
M0.13
0.10
On/Off controlCLK
V
CC N.C.
GND
1
Out
2
5 3
N.C.
4
Sample
and
hold
Hall
element
Amplifier
Switch
■ Pin Descriptions
Note) The magnetism detection time should be longer than one intermittent action cycle (On = 200 µs and Off = 51 ms).
Pin No. Symbol Description
4 N.C.
5V
CC
Power supply
Pin No. Symbol Description
1 Out Output
2 GND Ground
3N.C