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AH9248のメーカーはBCDです、この部品の機能は「High Sensitivity Micropower Omnipolar Hall-Effect Switch」です。 |
部品番号 | AH9248 |
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部品説明 | High Sensitivity Micropower Omnipolar Hall-Effect Switch | ||
メーカ | BCD | ||
ロゴ | |||
このページの下部にプレビューとAH9248ダウンロード(pdfファイル)リンクがあります。 Total 15 pages
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 (BOP), the output will be turned on; if
it is less than releasing point (BRP), 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
BCD Semiconductor Manufacturing Limited
1
1 Page High Sensitivity Micropower Omnipolar Hall-Effect Switch
Functional Block Diagram
Data Sheet
AH9248
A (B)
A for TO-92S-3
B for SOT-23-3 and DFN-2×2-3
Figure 3. Functional Block Diagram of AH9248
Jul. 2011 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
3
3Pages Data Sheet
High Sensitivity Micropower Omnipolar Hall-Effect Switch
AH9248
Electrical Characteristics
VCC =3V, TA =25°C, unless otherwise specified.
Parameter
Supply Voltage
Supply Current
Output Current
Output Leakage Current
Saturation Voltage
Awake Mode Time
Sleep Mode Time
Duty Cycle
Chopper Frequency
Symbol
VCC
IAW
ISL
IAVG
IOUT
ILEAK
VSAT
tAW
tSL
D
fC
Conditions
Operating
Awake
Sleep
Average
B<︱BRP︱
IOUT =1.0mA
Operating
Operating
Min Typ Max Unit
2.5 3 5.5 V
2 4 mA
6 10 μA
10 15 μA
1.0 mA
<0.1 1
μA
0.4 V
150 μs
90 120 ms
0.15 %
15 kHz
Magnetic Characteristics (Note 3)
VCC =3V, TA=25°C, unless otherwise specified.
Parameter
Operating point
Releasing Point
Hysteresis
Symbol
BOPS
BOPN
BRPS
BRPN
BHYS
Conditions
South pole to branded side
B>BOPS,VOUT=low(output on)
North pole to branded side
B>BOPN,VOUT=low(output on)
South pole to branded side
B<BRPS,VOUT=high(output off)
North pole to branded side
B<BRPN,VOUT=high(output off)
︱BOPX - BRPX︱(Note 4)
Min
-55
5
Typ
30
-30
20
-20
10
Note 3: The specifications stated here are guaranteed by design. 1 Gauss=0.1mT
Note 4: BOPX=operating point(output turns on); BRPX=releasing point(output turns off)
Max
55
-5
Unit
Gauss
Gauss
Gauss
Gauss
Gauss
Jul. 2011 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
6
6 Page | |||
ページ | 合計 : 15 ページ | ||
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PDF ダウンロード | [ AH9248 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
AH9246 | ULTRA HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH | Diodes |
AH9247 | High Sensitivity Micropower Omnipolar Hall-Effect Switch | BCD |
AH9248 | High Sensitivity Micropower Omnipolar Hall-Effect Switch | BCD |
AH9249 | High Sensitivity Micropower Omnipolar Hall-Effect Switch | BCD |