AH277A integrated Hall sensor with output driver designed electronic c
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Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH General Description
AH277A integrated Hall sensor with output driver designed electronic commutation brushless motor applications. device includes onchip Hall sensor magnetic sensing, amplifier that amplifies Hall voltage, Schmitt trigger provide switching hysteresis noise rejection, temperature compensation circuit compensate temperature drift Hall sensitivity complementary open-collector drivers sinking large load current. also includes internal band-gap regulator which used provide bias voltage internal circuits. Placing device variable magnetic field, magnetic flux density larger than threshold BOP, will turned (on) will turned high (off). This output state held until magnetic flux density reverses falls below BRP, then causes turned high (off) turned (on). AH277A available TO-94 (SIP-4L) package.
AH277A
On-Chip Hall Sensor 3.5V Supply Voltage 400mA (avg) Output Sink Current Reversed Supply Voltage Protection -20oC 85oC Operating Temperature Profile TO-94 (SIP-4L) Package Rating: 300V (Machine Model)
Applications
Dual-Coil Brushless Motor Dual-Coil Brushless Revolution Counting Speed Measurement
TO-94
Figure Package Type AH277A
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Configuration
Package (TO-94)
AH277A
Figure Configuration AH277A (Top View)
Description
Number Name Supply voltage Output Output Ground Function
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Functional Block Diagram
AH277A
Regulator
Temperature Compensation
Hall Sensor
Amplifier
Schmitt Trigger
Output Driver
Figure Functional Block Diagram AH277A
Ordering Information
AH277A Circuit Type Package TO-94 (SIP-4L) Lead Free Magnetic Characteristics 50Gauss 70Gauss 100Gauss
Package TO-94
Temperature Range
Part Number AH277AZ4-AE1 AH277AZ4-BE1 AH277AZ4-CE1
Marking AH277A AH277A AH277A
Packing Type Bulk Bulk Bulk
Semiconductor's Pb-free products, designated with "E1" suffix part number, RoHS compliant.
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Absolute Maximum Ratings (Note
(TA=25oC)
Parameter Supply Voltage Reverse Protection Voltage Magnetic Flux Density Continuous Output Current Hold Peak (start Power Dissipation atmosphere Thermal Resistance package case Storage Temperature (Machine Model) (Human Body Model) TSTG Symbol VRCC Value Unlimited 2000 Unit Gauss
oC/W oC/W
AH277A
Note Stresses greater than those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "Recommended Operating Conditions" implied. "Absolute Maximum Ratings" extended period affect device reliability.
Recommended Operating Conditions
(TA=25oC)
Parameter Supply Voltage Ambient Temperature Symbol Unit
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Electrical Characteristics
(TA=25oC, VCC=14V, unless otherwise specified)
Parameter Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Fall Time Switch Time Differential Output Zener Breakdown Voltage Symbol VSAT Test Condition VCC=3.5V, IO=100mA IO=400mA VCE=16V VCC=16V, Output Open RL=820, CL=20pF RL=820, CL=20pF RL=820, CL=20pF 0.35 Unit
AH277A
Magnetic Characteristics
(TA=25oC)
Parameter Operating Point Symbol Grade Releasing Point Hysteresis BHYS -100 Unit Gauss Gauss Gauss Gauss Gauss Gauss Gauss
Off-state High
Turn
BHYS
Turn
VSAT On-state
Magnetic Flux Density (Gauss)
Jul. 2006 Rev. Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Magnetic Characteristics (Continued) AH277A
+14V
AH277A
Marking Side
(VOUT1) (VOUT2)
20pF 20pF
Figure Basic Test Circuit
VSAT
VSAT
Magnetic Flux Density (Gauss)
Magnetic Flux Density (Gauss)
Figure Magnetic Flux Density
Figure VDOB Magnetic Flux Density
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Typical Performance Characteristics AH277A
BOP, BRP, (Gauss)
(mA)
TA=25
BHYS
TA=80
Figure
Figure BOP/BRP/BHYS
BOP, BRP, BHYS (Gauss)
(mW)
BHYS
Figure BOP/BRP/BHYS Ambient Temperature
Figure Ambient Temperature
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Typical Performance Characteristics (Continued)
AH277A
C/W)
Figure Thermal Resistance Ambient Temperature
Typical Applications
AH277A
COIL1 COIL2
2.2µF
2.2µF
Figure Typical Application Circuit with D1(Note
Note AH277A Reversed Supply Voltage Protection. application, sometimes need test power reverse connection condition. internal diode only protects chip-side coil-side. recommended external diode application block reverse current from coil-side shown Figure Jul. 2006 Rev. Semiconductor Manufacturing Limited
Data Sheet COMPLEMENTARY OUTPUT HALL EFFECT LATCH Mechanical Dimensions TO-94
0.500(0.020) 0.700(0.028) 1.400(0.055) 1.800(0.071) 4.980(0.196) 5.280(0.208) 1.850(0.073) 0.360(0.014) 0.510(0.020) 3.780(0.149) 4.080(0.161) 45°TYP
AH277A
Unit: mm(inch)
0.700(0.028) 0.900(0.035)
1.250(0.050) Hall Sensor Location 0.380(0.015) 0.550(0.022)
0.360(0.014) 0.500(0.020)
14.900(0.587) 15.300(0.602)
1.270(0.050) 3.710(0.146) 3.910(0.154)
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE Semiconductor Manufacturing Limited reserves right make changes without further notice products specifications herein. Semiconductor Manufacturing Limited does assume responsibility products particular purpose, does Semiconductor Manufacturing Limited assume liability arising application products circuits. Semiconductor Manufacturing Limited does convey license under patent rights other rights rights others.
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Semiconductor Manufacturing Limited
Design Group Advanced Analog Circuits (Shanghai) Corporation Zone 900, Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
REGIONAL SALES OFFICE
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