The A118X is a two-wire, unipolar, Hall-effect switch family designed
for use in high-temperature applications. This device uses a patented high
frequency chopper-stabilization technique on Allegro's new DABIC5
BiCMOS wafer fabrication process to achieve magnetic stability and to
eliminate offset inherent in single-element devices and from harsh-
application environments.
The A118X FAMILY of devices incorporates a programmability
function to allow for external trimming of the operate point.
The
programming is performed after final packaging of the sensor and
placement of the Single In-Line Package (SIP) into the application. This
advanced feature allows for optimization of sensor switching performance
by effectively accounting for variations caused by magnet and SIP
placement tolerances.
These devices provide on-chip transient protection. A zener clamp on
the power supply protects against over-voltage conditions on the supply
line.
The output of the A118X FAMILY, with the exception of the A1180/2,
will switch HIGH in the presence of a sufficiently large south-pole magnetic
field and will switch LOW with the removal of the field. The A1180/2 has
the opposite polarity as the others, switching LOW in the presence of a
sufficient magnetic field and HIGH with the removal of the field.
Two package styles provide a magnetically optimized package for
most applications. Suffix “LH” is a miniature low profile package for
surface-mount applications; suffix “UA” is a three-lead ultra-mini Single
Inline Package (SIP) for through-hole mounting.
Factory programmed versions also available, see A1140/42/43/45.
Programming software and/or hardware demonstration kits also available
see ASEK-01 on the Allegro web site, www.allegromicro.com.
See typical application drawing for UA pinning.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
V
CC
……………………………………..
26.5 V
Reverse-Battery Voltage
V
RB
………………………………………
-18 V
Magnetic Flux Density
B ……………………………………
Unlimited
Package Power Dissipation
θ
ja,
UA………………………………….
206 °C/W
LH
1
……………………………….….248
°C/W
Junction Temperature, T
J
………………..
+170°C
Operating Temperature Range, T
A
Suffix “E” …………….…….
- 40 °C to + 85 °C
Suffix “L” ………………….
- 40 °C to + 150 °C
Storage Temperature Range
T
S
…………………………
-65 °C to +170 °C
FEATURES / BENEFITS
♦
Chopper Stabilization
s
Extremely low switch-point drift
s
Low stress sensitivity
♦
One-time external programmability
s
Operate Point
♦
On-chip Protection
s
Supply transient protection
s
Robust ESD/EMC protection
s
Reverse-battery protection
♦
On-board Voltage Regulator
s
3.8 V to 24 V operation
Order by complete part number (i.e. A1182LUA).
1
The “LH”
PPD is based on a 0.062" thick FR4, single-sided board using 2 oz. copper, with a 0.55 mm
2
area of copper attached to the ground lead.
TWO-WIRE, PROGRAMMABLE, UNIPOLAR HALL-EFFECT SWITCH FAMILY
(PRELIMINARY INFORMATION – SUBJECT TO CHANGE)
CHARACTERISTICS
Valid over operating temperature range unless otherwise noted.
Part Number
Characteristics
Symbol
Test Conditions
Min.
ELECTRICAL CHARACTERISTICS
A118X FAMILY
A1182/3/4
2
Limits
Typ.
Max.
Units
Supply Voltage
Supply Current
V
CC
I
GND(L)
I
GND(H)
Operating
Output I Low
Output I High
Output I Low
Output I High
R
L
=100 Ohms,
C
BYP
=0.1uF
R
L
=100 Ohms,
C
BYP
=0.1uF
-
-
t < t
on,
t
r
< 5us,
no bypass capacitor
I = 10mA
3.8
5
12
2
12
-
-
-
-
-
28
-
-
-
-
-
20
20
340
-
HIGH
36
24
6.9
17
5
17
-
-
-
25
-
40
V
mA
mA
mA
mA
us
us
kHz
µs
-
V
A1180/1
Supply Current
Output Rise Time
Output Fall Time
3
I
GND(L)
I
GND(H)
t
r
t
f
f
C
t
on
POS
V
Z
3
A118X
Chopping Frequency
Power-Up Time
Power-Up State
Zener Voltage
MAGNETIC CHARACTERISTICS
Minimum Programmable
Operate Point
Maximum Programmable
Operate Point
Switch Point Step Size
Minimum Programmable
Operate Point
Maximum Programmable
Operate Point
Switch Point Step Size
Number of Programming
Bits
A118X
Temperature Drift of B
OP
Hysterisis
B
OPmin
B
OPmax
B
RES
B
OPmin
B
OPmax
B
RES
-
∆B
OP
B
HYS
Switch Point
Programming Lock
A1180-A1183
B
OP
- B
RP
5
15
B>B
op
,
I
GND
=Low (A1180/2)
I
GND
=High (A1181/3)
-
B>B
op
,
I
GND
=High (A1184)
-
-
-
300
600
16
5
1
-
-
+/-20
30
60
200
8
G
G
G
G
G
G
Bit(s)
Bit(s)
G
G
A1180/1/2/3
4
A1184
5
2
3
These are the A3161 current levels.
Typical rise and fall time of the Hall sensor is 1us, the true rise and fall time is dependent on the load circuit as indicated by the 20us specification.
4
Programming is typically performed at Ta = 25°C and does not take into account temperature drift of the switch point. See
∆B
OP.
5
Programming is typically performed at Ta = 25°C and does not take into account temperature drift of the sw itch point.
∆B
OP
has not yet been
characterized for the A1184 and may require additional tolerance due to the high magnetic switch points
[b][size=4][color=#ff0000]The 2013 Silicon Labs & EDOM New Product Tour and Application Technology Seminar will be launched in October with new product solutions! [/color][/size][/b]The seminar will b...
[font=微软雅黑][size=4]Time: Now to July 31[/size][/font][font=微软雅黑][size=4] [/size][/font] [font=微软雅黑][size=4][color=#333333]Tektronix 70th Anniversary Celebration[/color]{:1_107:}[color=#333333] Learn a...
Brothers, please recommend an "IC card swiping module" that can be connected to the s3c2440 development board (pre-installed WinCE5.0), that is, ARM9 for control. 1. What interface does the IC card sw...
What is a zero-drift amplifier? What are the common applications of zero-drift amplifiers? Why are zero-drift amplifiers often used in low-frequency sensor signal conditioning systems? ……? >>...
The rapid development of the Internet has realized high-speed information transmission and resource sharing, greatly facilitating people's lives. Embedded systems are widely used in various electr...[Details]
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
The Portable Digital Data Acquisition System (PDDAS) uses LabVIEW Real-Time and PXI to control the wind tunnel test and record air pressure data from 128 different channels.
"The LabVIEW Real-...[Details]
introduction
Solar cells and LED lighting are typical applications of new energy and energy-saving and efficient technologies. Solar LED lighting uses solar cells to convert solar energy...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
My colleague and I spent the day chatting in the hotel bar. We had met with several customers. We were both wondering how come these engineers we were meeting knew almost nothing about analog techn...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
Instrument stepper motor
The stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
In the analysis of electronic circuits, static analysis (also known as DC analysis) is the basis of circuit analysis. However, it is well known that electronic components are nonlinear, so the anal...[Details]
RS-422 and RS-485 are both serial data interface standards, which were developed and published by the Electronic Industries Association (EIA). RS-422 defines a balanced communication interface with a ...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
Integrated technical exchanges
京公网安备 11010802033920号
EEWORLD
