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PDF ( 数据手册 , 数据表 ) AH211

零件编号 AH211
描述 TWO PHASE HALL EFFECT LATCH
制造商 BCD Semiconductor
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AH211 数据手册, 描述, 功能
TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT
General Description
Features
Data Sheet
AH211
The AH211 is an integrated Hall sensor with output
driver and frequency generator designed for electronic
commutation of brush-less DC motor applications. The
device includes an on-chip Hall sensor for magnetic
sensing, an amplifier that amplifies the Hall voltage, a
Schmitt trigger to provide switching hysteresis for
noise rejection, a temperature compensation circuit to
compensate the temperature drift of Hall sensitivity,
two complementary open-collector drivers for sinking
large load current. It also includes an internal band-gap
regulator which is used to provide bias voltage for
internal circuits.
Place the device in a variable magnetic field, while the
magnetic flux density is larger than threshold BOP, DO
will be turned on (low) and DOB (and FG) will be
turned off (high). This output state is held till the mag-
netic flux density reversal falls below BRP causing DO
to be turned off (high) and DOB (and FG) turned on
(low).
· On-Chip Hall Sensor
· 3.5V to 16V Supply Voltage
· 400mA (avg) Output Sink Current
· -20oC to 85oC Operating Temperature
· Built-in FG Output
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 600V (Machine Model)
Applications
· Dual-Coil Brushless DC Motor
· Dual-Coil Brushless DC Fan
· Revolution Counting
· Speed Measurement
AH211 is available in TO-94 (SIP-4L) package.
Feb. 2010 Rev. 1. 7
TO-94
Figure 1. Package Type of AH211
BCD Semiconductor Manufacturing Limited
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AH211 pdf, 数据表
TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT
Typical Performance Characteristics (Continued)
Data Sheet
AH211
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
-40
IPIN2
IPIN3
-20 0
VCC=14V
20 40 60 80
TA (oC)
Figure 11. Supply Current vs. Ambient Temperature
1100
1050
1000
VCC=14V
IOUT=400mA
VPIN2
VPIN3
950
900
-40 -20 0 20 40 60 80
TA (oC)
Figure 12. VSAT vs. Ambient Temperature
250
200
150
100
50
0
0
5 10 15
IOUT (mA)
20
Figure 13. FG Saturation Voltage vs.
Output Current
320
VPIN2=14V
300 IOUT=20mA
280
260
240
220
-40
-20
0
20 40 60 80
TA (oC)
Figure 14. FG Saturation Voltage vs.
Ambient Temperature
Feb. 2010 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
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