AH175
Hall Effect Latch For High Temperature
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
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:
C
125
~
C
40
+
-
- Package: SIP3, SOT23
Applications
- Rotor position sensing
- Current switch
- Encoder
- RPM detection
Pin Assignment
(SIP3 package)
( SOT23 package)
1. VCC
2. GND
3. OUT
1. VCC
3.
GND 2.
OUT
(Top view)
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.
Pin Descriptions
Name
Description
VCC
Input power
GND
Ground
OUT Output
stage
Ordering Information
AH175 X - X X X - X
Packing
Blank : Tube
A : Taping
P: SIP3
W: SOT23
Package
Lead
L : Lead Free
Blank: Normal
Wafer Body
Magnetic
Characteristics
Blank or
A~Z : if necessary
to specify
A or B
AH175
Hall Effect Latch For High Temperature
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
2/6
Block Diagram
AMP
REG.
1
3
2
VCC
OUT
GND
Application Circuit
M
Driver
&
Control Logic
I
a
I
b
I
c
I
A
I
C
I
B
H
B
H
A
H
C
M: Three Phase Hall Motor
Digital Hall Effect Sensor
Hall Motor Driver
RPM sensing
Three Phase Hall Motor
AH175
Hall Effect Latch For High Temperature
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
3/6
Absolute Maximum Ratings
(At Ta= 25
C )
Parameter
Symbol
Rating
Unit
Supply voltage
VCC
20
V
Output "OFF " voltage
Vout (off)
20
V
Output "ON" current
Io (sink)
25
mA
Operating temperature range
Top
-40~+125
C
Storage temperature range
Tstg
-65~+150
C
SIP 550
mW
Power dissipation
SOT23
PD
230 mW
Electrical Characteristics
(Ta= 25
C )
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply voltage
Vcc
-
3.5
-
20
V
Output saturation voltage
Vout(sat)
VCC=12V, OUT "ON"
Io =10mA
- 300
400
mV
Supply current
Icc
VCC=12V, OUT "OFF"
-
3.5
6
mA
Magnetic Characteristics
(Ta= 25
C )
(1mT = 10 Gauss)
A grade
Parameter
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
15
-
60
Gauss
Release Point
Brp
-60
-
-15
Gauss
Hysteresis Bhy
-
80
-
Gauss
B grade
Parameter
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
5
-
80
Gauss
Release Point
Brp
-80
-
-5
Gauss
Hysteresis Bhy
-
80
-
Gauss
AH175
Hall Effect Latch For High Temperature
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
4/6
Operating Characteristics
Marking side
S
B
hy
V
sat
V
cc
( Output Voltage )
V
d
B
rp
B
op
0
( Magnetic flux density )
V
out
High
Low
Marking side
S
( SIP3 )
( SOT23 )
N
N
Marking Information
(1) SOT23
(2) SIP3
J5 : AH175
XX YM X
Date code
Y : Year
M : Month (A~L)
(Top View)
ID code
A~Z: Non-Lead Free
a~z : Lead Free
175
YWW X
Date code
Y : Year
WW : Nth week
(Top View)
ID code
A~Z: Non-Lead Free
a~z : Lead Free
AH175
Hall Effect Latch For High Temperature
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
5/6
Package Information
(1) Package Type: SIP-3L
Active Area Depth
Sensor Location
1
2
3
2.10mm
1.55mm
0.51mm
NOM
BRANDED
SURFACE
Package Dimension
1.57mm
1.47mm
4.17mm
4.04mm
1.82
mm
15.50mm
13.00mm
1
2
3
1.27mm
0.41mm
0.41mm
45
45
0.38mm
0.7mm
3.10mm
2.97mm
AH175
Hall Effect Latch For High Temperature
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
6/6
(2) Package Type: SOT23-3L
L
e
E
HE
D
A2
A1
b(3x)
A
SEE VIEW C
VIEW C
L1
1(4x)
2(4x)
e1
GAUGE PLANE
SEATING PLANE
C
0.10
3X
2
1
3
1.45mm
0.8mm
( Sensing point )
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
A 1.05 - 1.35
0.041 - 0.053
A1 0.05 - 0.15
0.002 - 0.006
A2 1.00
1.10
1.20
0.039
0.043
0.047
b 0.25 - 0.50
0.010
-
0.020
C 0.08 - 0.20
0.003
-
0.008
D 2.70
2.90
3.00
0.106
0.114
0.118
E 1.50
1.60
1.70
0.059
0.063
0.067
HE 2.60
2.80
3.00
0.102
0.110
0.118
L 0.30 - 0.55
0.012
-
0.022
L1 0.50
0.60
0.70
0.020
0.024
0.028
e 1.80
1.90
2.00
0.071
0.075
0.079
e1 0.85
0.95
1.05
0.033
0.037
0.041
0
o
5
o
10
o
0
o
5
o
10
o
1 3
o
5
o
7
o
3
o
5
o
7
o
2 6
o
8
o
10
o
6
o
8
o
10
o
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