EM1791

Monolithic Hall Effect ICs EM-series
●Absolute Maximum Ratings (Ta=25℃
●Operational Characteristics
Magnetic q and Electrical Characteristics (Ta=25℃ VDD=1.85V)
Magnetic Characteristics w(Ta=−30∼+85℃ VDD=1.85V)
●Application Circuit
VDD
VDD
VSS
0.1μF
GND
OUT1
OUT2
CMOS
CMOS
EM-1791
Bypass Capacitor
EM-1791
Unipolar Hall
Effect Switch
Two output for S
and N-pole
Supply Voltage
1.6∼5.5
High Sensitivity
Bop2.5mT
Output
CMOS
Two output
for S and N-pole
SMTHall Element
Pulse
Excitation
Item
Limit
Unit
Symbol
VDD
I
out
Topr
Tstg
0.1 6.0
±
0.5
30 85
40 125
V
mA
Supply Voltage
Output Current
Operating Temperature Range
Storage Temperature Range
Item
Conditions Min.
Unit
Symbol
1.6
*1.4
3.2
1.2
*3.0
2.5
2.5
2.0
2.0
0.5
50
6.5
5.5
3.2
*1.4
*3.0
1.2
100
0.4
9
V
mT
mT
mT
ms
V
V
μA
Typ.
Max.
Release Point
Hysteresis
Period
Output High Voltage
Supply Current
Io=0.2mA
Io=0.2mA
Average
VDD
B
OP
1
B
OP
2
B
rp
1
B
rp
2
B
h
1,B
h
2
T
p
V
OH
IDD
Output Low Voltage
V
OL
EM-1791 is ultra-small Hall effect ICs of a single silicon chip composed of Hall element and a signal processing IC.
Shipped in packet-tape reel(5000pcs/Reel)
VDD
0.4
Item
Conditions
Min.
Unit
Symbol
1.3
1.1
2.5
2.0
0.5
3.5
3.3
mT
mT
mT
Typ.
Max.
Hysteresis
B
OP
S
B
rp
S
B
h
S
B
OP
N
B
rp
N
B
h
N
12
S or N
N or S
Marking
1:VDD
2:OUT 1(S-pole)
3:OUT 2(N-pole)
4:VSS
2:OUT1
  (S-pole)
3:OUT2
 (N-pole)
1:VDD
Switch
Dynamic
Offset Cancellation
Output
Stage
AmplifierChopper
Stabilizer
Hall
Element
Oscillator
&
Timing Logic
Schmitt
Trigger
&
Latch
4:VSS
Notice:It is requested to read and accept "IMPORTANT NOTICE" written on the back of the front cover of this catalogue.
●Functional Block Diagram
Operating Point
Supply Voltage
Release Point
Operating Point
1mT=10Gauss
Note) The above specifications are design targets.
※ The characteristics with 「*」 marks are design targets.
※ OUT1 responds to the positive flux from the south pole(Bop1,Brp1) ,OUT2 to the
  negative flux from the north pole(Bop2,Brp2) .
0
Bop1Brp1
Bh1
H
V
OL
S-pole N-pole
L
Vout1
V
OH
VOH
Magnetic flux density Magnetic flux density
0
Bop2 Brp2
Bh2
H
V
OL
L
Vout 2
45
EM-1791
●IDD Pulse Driving(VDD=1.85V
●Temparature Dependence of Bop. Brp
(For reference only)Land Pattern(Unit:mm)
50ms
Time
146μs
I
DD ON
(TYP=1.8mA
I
DD
(TYP=6.5μA)
I
DD OFF
(TYP=1.3μA)
3
4
2
0
1
Operating Point[mT]
Bop1
Brp1
Bop2
Brp2
40
4
3
2
1
20 0 20 40 60 80 100
Ambient Temperature[℃]
a
f
j
o
●Function Timing Chart
IDD
B
Bop
Vout
High
Low
t
t
t
Operating Point Timing
IDD
B
Brp
Vout
48.8μs
48.8μs
High
Low
t
t
t
Release Point Timing
This Hall ICs output is held as internal data just before the internal circuit
turns OFF (IDD OFF). And after 48.8 μs, the output changes.
Note) 48.8μs in figures is typical value
●Supply Voltage
6
5
4
3
2
1
0
40
20 40 60 8020 1000
Supply Voltage[V]
Ambient Temperature[℃]
•Please be aware that our products are not intended for use in life support equipment, devices, or systems. Use of our products in such applications requires the
advance written approval of our sales staff.
Certain applications using semiconductor devices may involve potential risks of personal injury, property damage, or loss of life. In order to minimize these risks,
adequate design and operating safeguards should be provided by the customer to minimize inherent or procedural hazards. Inclusion of our products in such
applications is understood to be fully at the risk of the customer using our devices or systems.
Note1) The sensor center is located
    within the φ0.3mm circle.
Note2) The tolerances of dimensions
    with no mentions is ±0.1mm.
Note3) Coplanarity:The differnces between
    standoff of terminals are max.0.1mm.
Note4) The sensor part is located 0.4mm(typ.)
    far from marking surface.
0.25
0.3
0.1
0∼0.1
0.3
2.1±0.1
1.3
0.05
2.1±0.2
1.25±0.1
0.25
1
43
2
φ0.3
Sensor center
0.1
0
0.55
VDD=1.85V
S-pole
N-pole
●Package(Unit:mm)
Pin No.
1
2
3
4
Pin Name
VDD
OUT1
OUT2
VSS
Function
Supply Voltage
Output Voltage
Output Voltage
GND
Comment
S-pole
N-pole
n
p
1.30
0.90
1.90
0.50
46
IMPORTANT NOTICE
These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make
inquiries the sales office of Asahi Kasei Microdevices Corporation (AKM) or
authorized distributors as to current status of the products.
Descriptions of external circuits, application circuits, software and other related
information contained in this document are provided only to illustrate the
operation and application examples of the semiconductor products. You are
fully responsible for the incorporation of these external circuits, application
circuits, software and other related information in the design of your
equipments. AKM assumes no responsibility for any losses incurred by you or
third parties arising from the use of these information herein. AKM assumes no
liability for infringement of any patent, intellectual property, or other rights in
the application or use of such information contained herein.
Any export of these products, or devices or systems containing them, may
require an export license or other official approval under the law and
regulations of the country of export pertaining to customs and tariffs, currency
exchange, or strategic materials.
AKM products are neither intended nor authorized for use as critical
components
Note1)
in any safety, life support, or other hazard related device or
system
Note2)
, and AKM assumes no responsibility for such use, except for the
use approved with the express written consent by Representative Director of
AKM. As used here:
Note1) A critical component is one whose failure to function or perform
may reasonably be expected to result, whether directly or indirectly, in the
loss of the safety or effectiveness of the device or system containing it,
and which must therefore meet very high standards of performance and
reliability.
Note2) A hazard related device or system is one designed or intended for
life support or maintenance of safety or for applications in medicine,
aerospace, nuclear energy, or other fields, in which its failure to function
or perform may reasonably be expected to result in loss of life or in
significant injury or damage to person or property.
It is the responsibility of the buyer or distributor of AKM products, who
distributes, disposes of, or otherwise places the product with a third party, to
notify such third party in advance of the above content and conditions, and
the buyer or distributor agrees to assume any and all responsibility and
liability for and hold AKM harmless from any and all claims arising from the
use of said product in the absence of such notification.
April 4, 2012

EM1791

Mfr. #:
Manufacturer:
Description:
MAGNETIC SWITCH UNIPOLAR 4SOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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