AH1751
HALL EFFECT LATCH
General Description
Features
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.
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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
SIP3, SC59 and SC59R (Commonly known as SOT23
in Asia): Available in “Green” Molding Compound
(No Br, Sb)
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.
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Lead Free Finish/ RoHS Compliant (Note 1)
Applications
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Rotor Position Sensing
Current Switch
Encoder
RPM Detection
Ordering Information
AH1751 - X G - X - A
Magnetic
Packing
Package
Green
Characteristics
A
P : SIP3
W : SC59
R : SC59R
A : Ammo (Note 3)
B : Bulk (Note 4)
7 : Tape & Reel
G : Green
Tube/Bulk
7” Tape and Reel
Part
Ammo Box
Part
Magnetic
Characteristics
Package Packaging
Device
Part Number
Code
(Note 2)
Quantity
Quantity
Number Quantity Number
Suffix
Suffix
Suffix
AH1751-PG-A-A
P
P
SIP3
SIP3
NA
1000
NA
NA
-B
NA
NA
4000/Box
NA
-A
A
A
A
A
AH1751-PG-B-A
AH1751-WG-7-A
AH1751-RG-7-A
NA
NA
-7
NA
NA
NA
W
R
SC59
SC59R
NA
NA
3000/Tape & Reel
3000/Tape & Reel
NA
NA
-7
NA
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
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. 4
DS31436
1 of 9
www.diodes.com
OCTOBER 2009
© Diodes Incorporated