BCD AH41Z3-AG1 Bipolar hall-effect position sensor Datasheet

Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
General Description
Features
The AH41 is an integrated Hall-effect latched sensor
designed for electronic commutation of brushless DC
motor applications. The device includes an on-chip
Hall voltage generator for magnetic sensing, a
comparator that amplifiers the Hall voltage, and a
Schmitt to provide switching hysteresis for noise
rejection and open-collector output. An internal
bandgap regulator is used to provide temperature
compensated supply voltage for internal circuits and
allows a wide operating supply range.
•
•
•
•
•
•
•
A north pole of sufficient strength will turn the output
ON. In the absence of a magnetic field, the output is
OFF.
On-chip Hall Sensor
Wide Operating Voltage Range: 4V to 24V
Internal Bandgap Regulator for Temperature
Compensation
Maximum Output Sink Current: 50mA
Low Profile TO-92S-3
Operating Temperature: -40˚C to 150˚C
ESD Rating: 2000V (Human Body Model)
300V (Machine Model)
Application
•
Brushless DC Motor
This IC is available in TO-92S-3 package.
TO-92S-3
Figure 1. Package Type of AH41
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Pin Configuration
Z3 Package
(TO-92S-3)
Figure 2. Pin Configuration of AH41 (Front View)
Pin Description
Pin Number
Pin Name
1
VCC
Power supply pin
2
GND
Ground pin
3
OUTPUT
Nov 2010
Function
Output pin. It is low during the N magnetic field
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Functional Block Diagram
Figure 3. Functional Block Diagram of AH41
Ordering Information
AH41
-
G1: Green
Circuit Type
Magnetic Characteristics
A: 30 to 75 Gauss
B: 5 to 105 Gauss
Package
Z3: TO-92S-3
Package
Temperature Range
TO-92S-3
-40 to 150°C
Part Number
Marking ID
Packing Type
AH41Z3-AG1
AH41
Bulk
AH41Z3-BG1
AH41
Bulk
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
3
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
-24 to 28
V
Output OFF Voltage
VCE
30
V
Output Sink Current (Continuous Current)
IOUT
50
mA
PD
400
mW
Storage Temperature
TSTG
-65 to 150
°C
Junction Temperature
TJ
150
°C
ESD (Machine Model)
300
V
ESD (Human Body Model)
2000
V
Power Dissipation (TA=25°C)
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.
Recommended Operating Conditions (TA=25°C)
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VCC
4
24
V
Operating Temperature
TOP
-40
150
°C
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
4
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Electrical Characteristics
VCC =12V, TA =25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
24
V
6
9
mA
Supply Voltage
VCC
Supply Current
ICC
VCC=4V to 24V
Output Leakage Current
IOL
VCE=14V
0.1
10
µA
IOUT =20mA
110
300
mV
ns
Output Saturation Voltage
4
VSAT
Rise Time
tr
Fall Time
tf
RL=820Ω
CL=20pF
RL=820Ω
CL=20pF
200
100
ns
Magnetic Characteristics (TA=25°C)
Parameter
Operating Point
Releasing Point
Hysteresis
Symbol
Grade
BOP
BRP
Min
Typ
Max
A
30
75
B
5
105
A
-75
-30
B
-105
-5
BHYS
80
110
140
Unit
Gauss
Gauss
Gauss
VOUT
High
BHYS
Turn off
Low
BRP
VSAT
N
Turn on
B OP
S
0
Magnetic Flux Density (Gauss)
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Test Circuit
AH41
(Front View)
VCC
S
VCC GND OUTPUT
Marking Side
N
1
2
3
VOUT
RL 820Ω
CL
20pF
Figure 4. Basic Test Circuit of AH41
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
6
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Typical Performance Characteristics
7
10
6
Supply Current (mA)
Supply Current (mA)
8
5
4
3
6
4
2
2
VCC=12V
o
1
TA=25 C
0
0
3
6
9
12
15
18
21
0
-40
24
-20
0
20
60
80
100
120
140
o
Supply Voltage(V)
Ambient Temperature ( C)
Figure 5. Supply Current vs. Supply Voltage
Figure 6. Supply Current vs. Ambient Temperature
200
400
300
150
BOP/BRP/BHYS (Gauss)
BOP/BRP/BHYS (Gauss)
40
200
100
0
-100
100
50
BOP
BRP
0
BHYS
BOP
BRP
-200
-50
BHYS
-300
4
8
12
16
20
-100
-40
24
0
20
40
60
80
100
120
140
Ambient Temperature ( C)
Figure 7. BOP/BRP/BHYS vs. Supply Voltage
Nov 2010
-20
o
Supply Voltage (V)
Figure 8. BOP/BRP/BHYS vs. Ambient Temperature
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
7
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Typical Performance Characteristics (Continued)
200
Saturation Voltage (V)
VCC=12V
IOUT=10mA
150
IOUT=20mA
100
50
0
-40
-20
0
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
Figure 9. Saturation Voltage vs. Ambient Temperature
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
8
Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
Mechanical Dimensions
TO-92S-3
Unit: mm(inch)
°
°
Nov 2010
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
9
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