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ATS622LSB Datasheet

  • ATS622LSB

  • TRUE ZERO-SPEED HALL-EFFECT GEAR-TOOTH SENSOR

  • 12頁

  • ALLEGRO   ALLEGRO

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ATS622LSB
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TRUE ZERO-SPEED
HALL-EFFECT GEAR-TOOTH SENSOR
The ATS622LSB is an optimized Hall-effect sensing integrated
circuit and magnet combination that provides a user-friendly solution
for true zero-speed digital gear-tooth sensing. The sensor module
consists of a plastic shell that holds together a samarium-cobalt magnet,
a pole piece, and a Hall-effect sensor that has been optimized to the
magnetic circuit. This small package can be easily assembled and used
in conjunction with a wide variety of gear shapes and sizes.
The integrated circuit incorporates a dual-element Hall-effect
sensor and signal processing that switches in response to differential
magnetic signals created by the ferrous gear teeth. The circuitry
contains a sophisticated digital circuit to eliminate magnet and system
offsets and to achieve true zero-speed operation (manufactured under
U.S. Pat. 5,917,320). A-to-D and D-to-A converters are used to adjust
the device gain at power on and to allow air-gap independent switching,
which greatly reduces vibration sensitivity of the device.
This sensor system is ideal for obtaining transmission and crank
information using gear-tooth-based configurations.
Data Sheet
27627.105
Pin 1 = Supply
Pin 2 = Output
Pin 3 = No Connection
Pin 4 = Ground
Dwg. AH-006-6
FEATURES AND BENEFITS
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
Tight timing accuracy over temperature
True zero-speed operation
Air-gap independent switch points
High vibration immunity
Extremely precise duty cycle signal with temperature
Large operating air gaps
Defined power-on state
Wide operating voltage range
Digital output representing gear profile
Single-chip sensing IC for high reliability
Small mechanical size (9 mm diameter x 7 mm length)
Optimized magnetic circuit
<200
碌s
power-on time
AGC and reference-adjust circuit
Under-voltage lockout
ABSOLUTE MAXIMUM RATINGS
at T
A
= 25
擄
C
Supply Voltage, V
CC
........................
26.5 V*
Reverse Supply Voltage, V
RCC
............
-24 V
Continuous Output Current, I
OUT
.......
20 mA
Reverse Output Current, I
ROUT
..........
50 mA
Package Power Dissipation,
P
D
..........................................
See Graph
Operating Temperature Range,
T
A
.............................
-40
擄
C to +150
擄
C*
Junction Temperature,
(continuous), T
J
..........................
+165
擄
C
(100 s), T
JM
................................
+180
擄
C
Storage Temperature, T
S
...................
+170
擄
C
* Operation at increased supply voltages with
external circuitry is described in Applications
Information. Devices for operation at in-
creased temperatures are available on special
order.
Some restrictions may apply to certain types of sales.
Contact factory for details.
Always order by complete part number:
ATS622LSB
.

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