SENSOR DE EFEITO HALL AH6851 NANJING AH ELECTRONIC

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NANJING AH ELECTRONIC CO., LTD 
AH6851 HALL-EFFECT SWITCH INTEGRATED CIRCUITS 
 
 These Hall-effect switch integrated circuits are monolithic integrated circuit consisting of a voltage regulator, 
Hall-voltage generator, differential amplifier, schmitt trigger, temperature compensation circuit and open-collector 
output stage. Its input is a magnetic flux density signal and output is a digital voltage signal. 
 
 TYPICAL APPLICATIONS 
 . Contactless switch . Position control 
 . Speed measurement . Revolution detection 
 . Isolation measurement . Brushless DC motor 
 . Automotive ignitor 
FEATURES 
 . Wide supply voltage range 
 . Fast response time 
 . Wide frequency and temperature range 
 . Long operating life 
 . Small size, convenient installing 
 . Output compatible with all digital logic families 
 
ABSOLUTE MAXIMUM RATING 
Parameter Symbol Value Unit 
Supply voltage VCC 24 V 
Magnetic flux density B Unlimited mT 
Output OFF voltage Vce 50 V 
Continuous output current IOL 50 mA 
Operating temperature range TA -40~125 ℃ 
Storage temperature range TS -55~150 ℃ 
ELECTRICAL CHARACTERISTICS TA=25℃ 
Type and Value 
Parameter Symbol Test conditions 
min typ max 
Unit 
Supply voltage VCC 4.5 - 24 V 
Output saturation voltage VOL Iout=20mA B>B BOP - 200 400 mV 
Output leakage current IOH Vout=24V B<BBRP - 0.1 10 μA 
Supply current ICC VCC=Output open - - 10 mA 
Output rise time tr RL=820Ω CL=20PF - 0.12 - μS 
Output fall time tf RL=820Ω CL=20PF - 0.18 - μS 
 
AH6851 HALL SWITCH 1
 
MAGNET CHARACTERISTICS VCC=4.5～24V 
Type and Value 
Parameter Symbol 
min typ max 
Unit 
Operate point BOP 10.0 mT 
Release point BRP -10.0 mT 
Hysteresis BH 2 - mT 
NOTE: 1mT=10GS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DIMENSIONS ( in: mm) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ADD: ROOM 901,CNK INTERNATIONAL MANSION, NO.198, HONG WU ROAD,NANJING, P.R.CHINA 
TEL: 0086-25-84609021 FAX: 0086-25-84670370 
WEBSITE: WWW.AHEST.COM E-MAIL: nianrong@ahest.com 
HALL SENSORS 
MAGNETIC-ELECTRICAL 
TRANSFER CHARACTERISTICS
1,Vcc
BLOCK DIAGRAM 
3, Vo
2, GND 
REG 
RL
 1. Vcc 2. GND 3. OUTPUT 
Cautions 
1. When install, should as full 
as possible decrease the 
mechanical stress acting on the 
Hall IC, to avoid the influence 
of the operate point and 
release point. 
2. On the premise of ensuring 
welding quality, use as possible 
as low welding temperature as 
short time. TO –92T Package and Active Area 
21 3
2.26
1.
34
标
作0.64
志面
用区深度4.5± 0.1
4.
0 ±
0 .
1
12
.7
m
in
2.
70 0.43
0.38
1.27
2.34
2.0± 0.1
1.0
0.38
2 2° °
°2
5°
Branded Surface 
Active Area Depth 
AH6851 HALL SWITCH 2