AH175
Hall Effect Latch For High Temperature
Features
- Bipolar Hall effect latch sensor
- 3.5V to 20V DC operation voltage
- Open collector pre-driver
- 25mA output sink current
- Chip power reverse-connection protection
- Operating temperature:
−
40
°
C ~
+
125
°
C
- Package: SIP3, SOT23
General Description
AH175 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 bandgap 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
Pin Assignment
(Top view)
Pin Descriptions
Name
3.
OUT
2. GND
1. VCC
Description
VCC
GND
OUT
Input power
Ground
Output stage
(SIP3 package)
3.
OUT
GND 2.
1. VCC
( SOT23 package)
Ordering Information
AH175 X - X X X - X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Blank: Normal
Packing
Blank : Tube
A : Taping
Magnetic
Characteristics
A or B
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.7 May 7, 2004
1/6
AH175
Hall Effect Latch For High Temperature
Absolute Maximum Ratings
Parameter
(At Ta= 25
°
C )
Symbol
Rating
Unit
Supply voltage
Output “OFF ” voltage
Output “ON” current
Operating temperature range
Storage temperature range
Power dissipation
SIP
SOT23
(Ta= 25
°
C )
VCC
Vout (off)
Io (sink)
Top
Tstg
PD
20
20
25
-40~+125
-65~+150
550
230
V
V
mA
°
C
°
C
mW
mW
Electrical Characteristics
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply voltage
Output saturation voltage
Supply current
Vcc
Vout(sat)
Icc
-
VCC=12V, OUT ”ON”
Io =10mA
VCC=12V, OUT ”OFF”
(Ta= 25
°
C )
3.5
-
-
-
300
3.5
20
400
6
V
mV
mA
Magnetic Characteristics
A grade
Parameter
Symbol
(1mT = 10 Gauss)
Min.
Typ.
Max.
Unit
Operate Point
Release Point
Hysteresis
B grade
Parameter
Bop
Brp
Bhy
15
-60
-
-
-
80
60
-15
-
Gauss
Gauss
Gauss
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Release Point
Hysteresis
Bop
Brp
Bhy
5
-80
-
-
-
80
80
-5
-
Gauss
Gauss
Gauss
Anachip Corp.
www.anachip.com.tw
3/6
Rev 0.7 May 7, 2004
Embedded System
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