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AH1751

HALL EFFECT LATCH



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AH1751 pdf
Features
Bipolar Hall Effect Latch Sensor
3.5V to 20V DC Operation Voltage
Open Collector Pre-Driver
50mA Output Sink Current
Chip Power Reverse-Connection Protection
Operating Temperature: -40oC~125oC
Package: SIP3
SIP3: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
AH1751
HALL EFFECT LATCH
General Description
AH1751 is a single-digital-output Hall-effect sensor for high
temperature operation. The device includes an on-chip Hall
voltage generator for magnetic sensing, an amplifier to amplify
Hall voltage, and a comparator to provide switching hysteresis for
noise rejection, and an open-collector output pre-driver. An
internal band-gap regulator is used to provide temperature
compensated supply voltage for internal circuits and allows a
wide operating supply range.
While the magnetic flux density (B) is larger than threshold Bop,
the OUT pin turns on (low). If B removed toward Brp, the OUT pin
is latched “on” state prior to B < Brp. When B < Brp, the OUT pin
go into “ off ” state.
Applications
Rotor Position Sensing
Current Switch
Encoder
RPM Detection
Ordering Information
AH1751 - X X X - X
Package
www.DataSheet4U.com
P : SIP3
Lead Free
G : Green
Packing
-A : Ammo (Note 3)
-B : Bulk (Note 4)
Magnetic
Characteristics
A
Device
AH1751-P
Package
Code
P
Packaging
(Note 2)
SIP3
Tube/Bulk
Quantity
Part Number
Suffix
1000
-B
Ammo Box
Quantity
Part Number
Suffix
4000/Box
-A
Notes:
1. RoHS revision 13.2.2003. Glass and high temperature solder exemptions applied, see EU Directive Annex Notes 5 and 7.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
3. Ammo Box is for SIP3 Spread Lead.
4. Bulk is for SIP3 Straight Lead.
AH1751 Rev. 1 - 2
1 of 6
www.diodes.com
APRIL 2008
© Diodes Incorporated



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AH1751 pdf
Pin Assignment
( Top View )
Pin Descriptions
Name
VCC
GND
OUT
Description
Input Power
Ground
Output Stage
SIP3
AH1751
HALL EFFECT LATCH
3. OUT
2. GND
1. VCC
Block Diagram
www.DataSheet4U.com
VCC
1
REG.
AMP
3 OUT
2 GND
AH1751 Rev. 1 - 2
2 of 6
www.diodes.com
APRIL 2008
© Diodes Incorporated



Part Number AH1751
Description HALL EFFECT LATCH
Maker Diodes Incorporated - Diodes Incorporated
Total Page 6 Pages
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