Anachip AH174T-WA-A Inverted output hall effect latch for high temperature Datasheet

AH174
Inverted Output Hall Effect Latch For High Temperature
„ Features
„ General Description
- 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
AH174 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 off (High).
If B removed toward Brp, the OUT pin is latched
“off” state prior to B < Brp. When B < Brp, the OUT
pin go into “ on ” state.
„ Applications
- Rotor position sensing
- Current switch
- Encoder
- RPM detection
„ Pin Descriptions
„ Pin Assignment
Name
(Top view)
3. OUT
2. GND
1. VCC
Description
VCC
Input power
GND
Ground
OUT
Inverted output stage
(SIP3 package)
3. OUT
GND 2.
1. VCC
( SOT23 package)
„ Ordering Information
AH174 X - X X X - X
Wafer Body
Package
Lead
Packing
Blank or
A~Z : if necessary
to specify
P: SIP3
W: SOT23
L : Lead Free
Blank: Normal
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
AH174
Inverted Output Hall Effect Latch For High Temperature
„ Block Diagram
VCC
1
REG.
3
OUT
2
GND
AMP
„ Application Circuit
IA
IB
M
Digital Hall Effect Sensor
IC
Driver
M: Three Phase Hall Motor
Ia
Ib
Ic
&
Control Logic
HA
RPM sensing
HB
HC
Hall Motor Driver
Three Phase Hall Motor
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
2/6
AH174
Inverted Output 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
SIP
Power Dissipation
Parameter
Supply voltage
Output saturation voltage
Supply current
Rating
Unit
VCC
20
V
Vout (off)
Io (sink)
Topt
Tstg
20
V
25
mA
-40~+125
°C
-65~+150
°C
550
mW
230
mW
PD
SOT23
„ Electrical Characteristics
Symbol
( Ta= 25°C )
Symbol
Conditions
Min.
Typ.
Max.
Unit
Vcc
—
3.5
-
20
V
-
300
400
mV
-
3.5
6
mA
Vout(sat)
Icc
VCC=12V, OUT ”ON”
Io =10mA
VCC=12V, OUT ”OFF”
„ 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
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
5
-
80
Gauss
Release Point
Brp
-80
-
-5
Gauss
Hysteresis
Bhy
-
80
-
Gauss
B grade
Parameter
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
3/6
AH174
Inverted Output Hall Effect Latch For High Temperature
„ Operating Characteristics
S
S
Marking side
Marking side
N
N
( SOT23 )
( Output Voltage )
OUT
Vcc
Bhy
Vsat
Brp
( SIP3 )
0
Bop
( Magnetic flux density )
„ Marking Information
(1) SOT23
(Top View)
XX YM X
(2) SIP3
(Top View)
ID code
A~Z: Non-Lead Free
a~z : Lead Free
174
YWW X
J4 : AH174
Date code
Y : Year
M : Month (A~L)
ID code
A~Z: Non-Lead Free
a~z : Lead Free
Date code
Y : Year
WW : Nth week
Anachip Corp.
www.anachip.com.tw
Rev 0.7 May 7, 2004
4/6
AH174
Inverted Output Hall Effect Latch For High Temperature
„ Package Information
(1) Package Type: SIP-3L
0.51mm
NOM
2.10mm
1.55mm
BRANDED
SURFACE
1
2
3
Sensor Location
Active Area Depth
Package Dimension
45º
0.38mm
0.7mm
1.57mm
1.47mm
0.41mm
0.41mm
3
1.27mm
4.17mm
4.04mm
2
1
45º
3.10mm
2.97mm
Anachip Corp.
www.anachip.com.tw
1.82
mm
15.50mm
13.00mm
Rev 0.7 May 7, 2004
5/6
AH174
Inverted Output Hall Effect Latch For High Temperature
(2) Package Type: SOT23-3L
D
2
HE
E
( Sensing point )
0.8mm
1
3
SEE VIEW C
1.45mm
e1
e
θ 1(4x)
3X
GAUGE PLANE
A
A2
0.10 C
L
θ 2(4x)
VIEW C
b(3x)
Symbol
A
A1
A2
b
C
D
E
HE
L
L1
e
e1
θ
θ1
θ2
Dimensions In Millimeters
Min.
1.05
0.05
1.00
0.25
0.08
2.70
1.50
2.60
0.30
0.50
1.80
0.85
0o
3o
6o
Nom.
1.10
2.90
1.60
2.80
0.60
1.90
0.95
5o
5o
8o
Max.
1.35
0.15
1.20
0.50
0.20
3.00
1.70
3.00
0.55
0.70
2.00
1.05
10o
7o
10o
Anachip Corp.
www.anachip.com.tw
θ
L1
A1
SEATING PLANE
Dimensions In Inches
Min.
0.041
0.002
0.039
0.010
0.003
0.106
0.059
0.102
0.012
0.020
0.071
0.033
0o
3o
6o
Nom.
0.043
0.114
0.063
0.110
0.024
0.075
0.037
5o
5o
8o
Max.
0.053
0.006
0.047
0.020
0.008
0.118
0.067
0.118
0.022
0.028
0.079
0.041
10o
7o
10o
Rev 0.7 May 7, 2004
6/6
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