Data Sheet
High Sensitivity Micropower Omnipolar Hall-Effect Switch
AH9248
General Description
The AH9248 is an ultra-sensitive Hall-effect switch
with digital latched output, mainly designed for
battery-operation, hand-held equipments.
Special CMOS process is used for low-voltage and
low-power requirement. A chopper stabilized
amplifier improves stability of magnetic switch
points. A sleep-awake logic controls the IC in sleep
time or awake time. This function will reduce the
average operating current of the IC. During the
awake time, the output is changed with the magnetic
flux density. During the sleep time, the output is
latched in its previous state and the current
consumption will reduce to some
μA.
The IC switching behaviour is omnipolar, either north
or south pole sufficient strength will turn the output
on. If the magnetic flux density is larger than
operating point (B
OP
), the output will be turned on; if
it is less than releasing point (B
RP
), the output will be
turned off.
The AH9248 is available in TO-92S-3, SOT-23-3 and
DFN-2×2-3 packages which are optimized for most
applications.
Features
•
•
•
•
•
•
•
Micropower Operation
2.5 to 5.5V Power Supply
Switching for Both Poles of a Magnet
(Omnipolar)
Stabilized Chopper
Superior Temperature Stability
Digital Output Signal
Built-in Pull-up Resistor (AH9249)
Applications
•
•
•
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
TO-92S-3
SOT-23-3
DFN-2×2-3
Figure 1. Package Types of AH9248
Jul. 2011
Rev. 1. 6
1
BCD Semiconductor Manufacturing Limited
Data Sheet
High Sensitivity Micropower Omnipolar Hall-Effect Switch
AH9248
Ordering Information
AH9248
Circuit Type
-
G1: Green
Package
Z3: TO-92S-3
N: SOT-23-3
DN: DFN-2×2-3
Package
TO-92S-3
AH9248Z3TR-G1
-40 to 85°C
SOT-23-3
DFN-2×2-3
AH9248NTR-G1
AH9248DNTR-G1
GL1
JA
9248
Blank: Bulk
TR: Tape and Reel or Ammo
Temperature Range
Part Number
AH9248Z3-G1
Marking ID
9248
Packing Type
Bulk
Ammo
Tape & Reel
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Jul. 2011
Rev. 1. 6
4
BCD Semiconductor Manufacturing Limited
Data Sheet
High Sensitivity Micropower Omnipolar Hall-Effect Switch
AH9248
Absolute Maximum Ratings (T
A
=25°C, Note 1)
Parameter
Supply Voltage
Supply Current (Fault)
Output Voltage
Output Current
Magnetic Flux Density
Power Dissipation
Storage Temperature
Junction Temperature
ESD (Machine Model) (Note 2)
Symbol
V
CC
I
CC
V
OUT
I
OUT
B
P
D
T
STG
T
J
ESD
Value
7
6
7
2
Unlimited
TO-92S-3
SOT-23-3
DFN-2×2-3
-55 to 150
150
200
400
230
230
Unit
V
mA
V
mA
Gauss
mW
°C
°C
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Note 2: Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe
Electro Static Discharge control procedures whenever handling semiconductor products.
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature
Symbol
V
CC
T
OP
Min
2.5
-40
Max
5.5
85
Unit
V
°C
Jul. 2011
Rev. 1. 6
5
BCD Semiconductor Manufacturing Limited
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
