This Anachip version datasheet is replaced
with Diodes Inc. datasheet AH173
AH173
Internal Pull-up Hall Effect Latch For High Temperature
Features
- Bipolar Hall effect latch sensor
- 3V to 20V DC operation voltage
- Built-in pull-up resistor
- 25mA output sink current
- Operating temperature:
−
40
°
C ~
+
125
°
C
- Package: SIP3, SOT23
General Description
AH173 is a single-digital-output Hall-effect sensor
with pull-up resistor 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
output driver with a pull-up resistor (Rpu). 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 operate point (Bop), the OUT pin turns on
(low). If B moves toward release point (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)
3.
OUT
2. GND
1. VCC
(SIP3 package)
Pin Descriptions
Name
VCC
GND
OUT
Description
Positive power supply
Ground
Output stage
3.
OUT
GND 2.
1. VCC
( SOT23 package)
Ordering Information
AH173 X - X X X - X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Packing
Blank : Bulk
A : Tape & Reel
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. 1.1 Jan. 09, 2006
1/6
This Anachip version datasheet is replaced
with Diodes Inc. datasheet AH173
AH173
Internal Pull-up Hall Effect Latch For High Temperature
Block Diagram
VCC
1
REG.
R
pu
3
AMP
OUT
2
GND
Functional Application Circuit
I
A
I
B
M
Digital Hall Effect Sensor
M: Three Phase Hall Motor
Driver
&
Control Logic
I
C
I
a
I
b
I
c
RPM sensing
H
A
H
B
H
C
Hall Motor Driver
3 Phase Hall Motor
Anachip Corp.
www.anachip.com.tw
2/6
Rev. 1.1 Jan. 09, 2006
This Anachip version datasheet is replaced
with Diodes Inc. datasheet AH173
AH173
Internal Pull-up Hall Effect Latch For High Temperature
Absolute Maximum Ratings
( at Ta= 25°C )
Characteristics
Supply Voltage
Output “off ” Voltage
Output “on” Current
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Power Dissipation
SIP
SOT23
Symbol
VCC
Vout (off)
Io (sink)
Top
Tstg
Tj
PD
( Ta= 25°C )
Conditions
VCC=12V, OUT ”ON”
Io =10mA
VCC=12V, OUT ”OFF”
Vd = Vcc-Vce
Min.
3
-
-
7
-
Typ.
-
300
3.5
10
-
Max.
20
400
6
13
0.3
Unit
V
mV
mA
KΩ
V
Values
20
20
25
-40~+125
-65~+150
+150
550
230
Unit
V
V
mA
°C
°C
°C
mW
mW
Electrical Characteristics
Characteristics
Supply Voltage
Output Saturation Voltage
Supply Current
Internal Pull-up Resistor
Dropout Voltage
Symbol
Vcc
Vout(sat)
Icc
Rpu
Vd
Magnetic Characteristics
(At Ta= 25°C )
(1mT = 10 Gauss)
A grade
Characteristics
Operate Point
Release Point
Hysteresis
B grade
Characteristics
Operate Point
Release Point
Hysteresis
Symbol
Bop
Brp
Bhy
Symbol
Bop
Brp
Bhy
Min.
15
-60
-
Min.
5
-80
-
Typ.
-
-
80
Typ.
-
-
80
Max.
60
-15
-
Max.
80
-5
-
Unit
Gauss
Gauss
Gauss
Unit
Gauss
Gauss
Gauss
Operating Characteristics
V
out
( Output Voltage )
V
cc
High
S
S
Marking side
V
d
B
hy
Low
Marking side
N
( SOT23 )
N
( SIP3 )
V
sat
B
rp
0
B
op
( Magnetic flux density )
Anachip Corp.
www.anachip.com.tw
3/6
Rev. 1.1 Jan. 09, 2006
This Anachip version datasheet is replaced
with Diodes Inc. datasheet AH173
AH173
Internal Pull-up Hall Effect Latch For High Temperature
Performance Characteristics (SIP3)
Ta (°C)
Pd (mW)
Ta (°C)
Pd (mW)
P d (m W )
600
500
400
300
200
100
0
0
25
50
75
100
125
150
T a (。 C )
25
550
105
198
50
440
110
176
60
396
115
154
70
352
120
132
80
308
125
110
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
P o w e r D is s ip a tio n C u rv e
Performance Characteristics (SOT23-3)
Ta (°C)
25
50
184
60
166
70
147
80
129
85
120
90
110
100
92
110
74
120
55
125
46
130
37
140
18
150
0
Pd (mW) 230
P d (m W )
P o w e r D is s ip a tio n C u rv e
300
200
100
0
0
25
50
75
100
125
150
T a (。 C )
Marking Information
(1) SOT23
(Top View)
(2) SIP3
(Top View)
ID code
A~Z: Non-Lead Free
a~z : Lead Free
J3 : AH173
Date code
Y : Year
M : Month (A~L)
XX YM X
173
YWW X
ID code
A~Z: Non-Lead Free
a~z : Lead Free
Date code
Y : Year
WW : Nth week
Anachip Corp.
www.anachip.com.tw
4/6
Rev. 1.1 Jan. 09, 2006
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