EFFECT LATCH. AH211 Datasheet

AH211 LATCH. Datasheet pdf. Equivalent

AH211 Datasheet
Recommendation AH211 Datasheet
Part AH211
Description TWO PHASE HALL EFFECT LATCH
Feature AH211; TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT General Description Features Data Sheet AH211 The AH2.
Manufacture BCD Semiconductor
Datasheet
Download AH211 Datasheet




BCD Semiconductor AH211
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
1



BCD Semiconductor AH211
TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT
Pin Configuration
Z4 Package
(TO-94)
4 GND
3 DOB
2 DO
1 FG
Figure 2. Pin Configuration of AH211 (Front View)
Data Sheet
AH211
Pin Description
Pin Number
1
2
3
4
Pin Name
FG
DO
DOB
GND
Frequency Generation
Output 1
Output 2
Ground
Function
Feb. 2010 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
2



BCD Semiconductor AH211
TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT
Functional Block Diagram
Data Sheet
AH211
Regulator
Temperature
Compensation
2
DO
Hall
Sensor
Amplifier
Schmitt
Trigger
Output
Driver
1
FG
Figure 3. Functional Block Diagram of AH211
3 DOB
4
GND
Ordering Information
AH211 -
Circuit Type
Package
Z4: TO-94 (SIP-4L)
E1: Lead Free
G1: Green
Magnetic Characteristics
A: 5 to 60 Gauss
B: 90 Gauss
Package
TO-94
Temperature
Range
-20 to 85 oC
Part Number
Lead Free
Green
AH211Z4-AE1 AH211Z4-AG1
AH211Z4-BE1 AH211Z4-BG1
Marking ID
Lead Free
Green
AH211
AH211Z4-G1
AH211
AH211Z4-G1
Packing
Type
Bulk
Bulk
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green package.
Feb. 2010 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
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