AN48840B
0.225
Low current consumption, high sensitivity CMOS Hall IC
Alternating magnetic field operation
(For low-speed rotation detection)
5
1.65
±0.10
4
0.22
+0.10
−0.05
0.13
M
Unit : mm
M
ain
Di
sc te
on na
tin nc
ue e/
d
0.225
1
2
0.80
±0.10
0.32
±0.10
0 to 0.10
Features
High sensitivity due to offset cancel circuit and a new sample and
hold circuit
Small current by using intermittent action
(Average supply current: 56
μA
typ., Sampling period: 670
μs
typ.)
Small package (SMD)
CMOS inverter output (logic output form)
Applications
Functional operation key, Mouse,
Appliances for low-speed rotation detection
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0.10
Seating plane
1
2
3
5
4
The AN48840B is a Hall ICs (a magnetic sensor) which has 2 times
or more sensitivity and a low current consumption of about one
fiftieth
compared with our conventional one.
In this Hall IC, a Hall element, a offset cancel circuit, an amplifier
circuit, a sample and hold circuit, a Schmidt circuit, and output stage
FET are integrated on a single chip housed in a small package by IC
technique.
2.10
±0.10
Overview
3
SMINI-5DA (Lead-free package)
S
Magnetic
flux density
N
AN48840B
output level
L
H
0.11
+0.10
−0.05
0.65 0.65
1.30
±0.10
2.00
±0.10
L
H
tin
ue
V
CC
4
di
Block Diagram
N.C.
3
N.C.
1
isc
on
CLK
On/Off control
an
ce
/D
Ma
int
en
5
Out
Amplifier
Hall
element
GND
2
Pin Descriptions
Pin No.
1
2
3
Symbol
N.C.
GND
N.C.
Ground
Description
Pin No.
4
5
Symbol
V
CC
Out
Output
Description
Power supply
Pl
Switch
Sample
hold
Publication date: March 2009
SPC00018BEB
1
AN48840B
Absolute Maximum Ratings
Parameter
Supply voltage
Output voltage
Supply current
Output current
Power dissipation
*1, *2
Operating ambient temperature
*1
Storage temperature
*1
Symbol
V
CC
V
OUT
I
CC
I
OUT
P
D
T
opr
T
stg
Rating
5
5
5
15
60
−25
to +75
−55
to +125
Unit
V
V
mA
mA
mW
°C
°C
Parameter
Symbol
V
CC
Supply voltage
Electrical Characteristics
T
a
= 25°C
±
2°C
Parameter
Symbol
B
HL
B
LH
Operating magnetic
flux
density 1
*1
Operating magnetic
flux
density 2
*2
Output voltage 1
Output voltage 1
Output voltage 2
Output voltage 2
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.
Range
Unit
V
2.5 to 3.5
Conditions
Min
0.5
−6
Typ
Max
6
−
0.5
0.3
0.3
0.1
0.1
2.9
2.9
2.7
2.7
56.0
48.0
670
710
85.0
72.0
850
890
490
513
Conditions
Min
10
258
11
270
Typ
7
1.4
2.5
1.12
2.2
26
644
27
674
Max
1.68
42
1 030
43
1 078
2.1
M
ain
Di
sc te
on na
tin nc
ue e/
d
Recommended Operating Range
V
CC
= 3 V, V
CC
= 2.5 V
V
CC
= 3 V, V
CC
= 2.5 V
V
OL1
V
OL2
V
CC
= 3 V, I
O
= 2 mA, B = 6.0 mT
V
CC
= 2.5 V, I
O
= 2 mA, B = 6.0 mT
V
OH1
V
OH2
V
CC
= 3 V, I
O
=
−2
mA, B =
−6.0
mT
V
CC
= 3 V
V
CC
= 2.5 V, I
O
=
−2
mA, B =
−6.0
mT
V
CC
= 2.5 V
V
CC
= 3 V
Supply current 1
*3
Supply current 2
*3
I
CCAVE
Tsam
Parameter
Hysteresis width
Supply current 3
Supply current 4
Supply current 5
Supply current 6
Operating time
Stop time
Operating time 2
Stop time 2
Note)
Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for T
a
= 25°C.
*2:T
a
= 75°C. For the independent IC without a heat sink. Please use within the range of power dissipation, refering to P
D
T
a
curve.
Unit
mT
mT
V
V
V
V
μA
μA
μS
μS
Ma
int
en
Design reference data
an
ce
Note) *1: Symbol B
H-LS
, B
H-LN
stands for the operating magnetic
flux
density where its output level varies from high to low.
*2:Symbol B
L-HS
, B
L-HN
stands for the operating magnetic
flux
density where its output level varies from low to high.
*3:I
CCAVE
= {I
CCON
×
t
ON
+ I
CCOFF
×
t
OFF
}/{t
ON
+ t
OFF
}
/D
isc
Symbol
BW
I
CCON
I
CCOFF
I
CC2ON
I
CC2OFF
t
ON
t
OFF
t
2ON
t
2OFF
on
Intermittent action time 2
Tsam2
tin
ue
Intermittent action time
di
I
CC2AVE
V
CC
= 2.5 V
Unit
mT
mA
μA
mA
μA
μS
μS
μS
μS
V
CC
= 3 V
V
CC
= 3 V
V
CC
= 3 V
V
CC
= 2.5 V
V
CC
= 2.5 V
T
a
=
−25°C
to 75°C, V
CC
= 3 V
T
a
=
−25°C
to 75°C, V
CC
= 3 V
T
a
=
−25°C
to 75°C, V
CC
= 2.5 V
T
a
=
−25°C
to 75°C, V
CC
= 2.5 V
It will operate normally in approximately 0.67 ms after power on.
2
Pl
SPC00018BEB
AN48840B
Technical Data
Position of a Hall element (unit in mm)
Distance from a package surface to sensor part: 0.31 mm (reference value)
A Hall element is placed on the shaded part in the
figure.
1.0
0.31
Magneto-electro conversion characteristics
S
N
Direction of applied magnetic field
ue
Power dissipation
AN48840B_P
D
-T
a
of package SMINI-5DA
on
200
tin
P
D
T
a
175
Operating magnetic flux density B (mT)
Ma
int
en
150
Power dissipation P
D
(mW)
125
Independent IC
without a heat sink
R
th(j-a)
=
833.3°C/W
P
D
=
120 mW (25°C)
Pl
100
75
50
−6.0
25
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Output voltage
B
LH
BW
B
HL
Applied magnetic flux density B
Operating magnetic flux density
ce
M
ain
Di
sc te
on na
tin nc
ue e/
d
1.0
di
AN48840B Main characterisitcs
AN48840B_Tokusei02
Operating magnetic
flux
density
Supply voltage
6.0
isc
/D
Sample 1 B
H-L
an
4.0
Sample 2 B
H-L
2.0
0
−2.0
Sample 1 B
L-H
Sample 2 B
L-H
T
a
=
25°C
1
2
3
4
5
−4.0
Supply voltage V
CC
(V)
0
0
25
50
75
100
125
150
Ambient temperature T
a
(°C)
SPC00018BEB
3
AN48840B
Technical Data (continued)
AN48840B Main
AN48840B_Tokusei03
characterisitcs (continued)
Operating magnetic
flux
density
Ambient temperature
6.0
Sample 1 B
H-L
9.5
4.0
Sample 2 B
H-L
9.0
10.0
T
a
=
25°C
AN48840B_Tokusei04
Hysteresis width
Supply voltage
Hesteresis width BW (mT)
2.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
Sample 2 BW
0
V
CC
=
3 V
−25
−6.0
−50
0
25
50
75
100
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125
1
2
3
4
M
ain
Di
sc te
on na
tin nc
ue e/
d
−2.0
Sample 1 B
L-H
−4.0
Sample 2 B
L-H
Sample 1 BW
5
Ambient temperature T
a
(°C)
AN48840B_Tokusei05
AN48840B_Tokusei06
Supply voltage V
CC
(V)
Supply current
Supply voltage
Low-level output voltage
Supply voltage
I
O
=
2 mA
100
90
80
70
60
50
40
30
20
10
0
0.035
Output
=
High
0.03
Low-level output voltage V
OL
(V)
125°C
Supply current I
CC
(µA)
0.025
−35°C
25°C
0.02
25°C
0.015
−50°C
85°C
0.01
di
tin
ue
0.005
on
1
2
3
4
5
0.00
1
2
3
4
5
6
Ma
int
en
0.06
0.055
an
Δ
high-level output voltage
Supply voltage
ce
AN48840B_Tokusei07
/D
Supply voltage V
CC
(V)
isc
Supply voltage V
CC
(V)
AN48840B_Tokusei08
Sampling period
Supply voltage
1 000
I
O
= −2
mA
V
CC
=
3 V
∆
hgh-level output voltage
∆V
OH
(V)
0.05
0.045
0.04
0.035
0.03
0.025
0.02
0.015
0.01
0.005
0
1
900
Sampling period T
S
(ms)
Pl
125°C
800
85°C
700
25°C
−35°C
25°C
−50°C
600
500
400
2
3
4
5
6
300
1
2
3
4
5
Supply voltage V
CC
(V)
Supply voltage V
CC
(V)
4
SPC00018BEB
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1)
If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for standard applications or general electronic equipment (such as office
equipment, communications equipment, measuring instruments and household appliances).
Consult our sales staff in advance for information on the following applications:
–
Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support
systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod-
ucts may directly jeopardize life or harm the human body.
–
Any applications other than the standard applications intended.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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ain
Di
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isc
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