參數(shù)資料
型號(hào): AH9249DN-G1
廠商: BCD SEMICONDUCTOR MANUFACTURING LTD
元件分類: 磁阻傳感器
英文描述: MAGNETIC FIELD SENSOR-HALL EFFECT, -.5-5.5mT, 1mA, SQUARE, SURFACE MOUNT
封裝: 2 MM X 2 MM, GREEN, DFN-3
文件頁數(shù): 1/14頁
文件大?。?/td> 399K
代理商: AH9249DN-G1
Preliminary Datasheet
High Sensitivity Micropower Omnipolar Hall-Effect Switch
AH9249
May. 2010
Rev. 1. 3
BCD Semiconductor Manufacturing Limited
1
General Description
The AH9249 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
A.
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(BOP), the output will be turned on; if
it is less than releasing point(BRP), the output will be
turned off.
The AH9249 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
ESD Rating: 4000V (Human Body Model)
600V (Machine Model)
Applications
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
Figure 1. Package Types of AH9249
TO-92S-3
SOT-23-3
DFN-2×2-3
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