ATS622LSB データシートの表示（PDF） - Allegro MicroSystems
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ATS622LSB Datasheet PDF : 12 Pages
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ATS622LSB
TRUE ZERO-SPEED,
GEAR-TOOTH SENSOR
APPLICATIONS INFORMATION — Continued
Signal timing accuracy. The magnetic field profile
width is defined by the sensor element spacing and nar-
rows in degrees as the target diameter increases. This
results in improved timing accuracy performance for larger
gear diameters (for the same number of gear teeth).
Valley-to-tooth transistions will generally provide better
accuracy than tooth-to-valley transitions for large-tooth or
large-valley configurations. For highest accuracy, targets
greater than 100mm in diameter should be used.
Signal duty cycle. For repetitive target structures,
precise duty cycle is maintained over the operating air gap
and temperature range due to an extremely good symmetry
in the magnetic switch points and the internal self calibra-
tion of the device. For irregular tooth geometries, there
will be a small but measureable change in pulse width
versus air gap.
Additional applications Information on gear-tooth
and other Hall-effect sensors is also available in the “Hall-
Effect IC Applications Guide”, which can be found in the
latest issue of the Allegro MicroSystems Electronic Data
Book, AMS-701 or Application Note 27701, or at
www.allegromicro.com
CRITERIA FOR DEVICE QUALIFICATION
All Allegro sensors are subjected to stringent qualification requirements prior to being released to production. To
become qualified, except for the destructive ESD tests, no failures are permitted.
Qualification Test
Test Method and
Test Conditions
Test Length
Samples
Per Lot
Comments
Temperature Humidity
Bias Life
Bias Life
(Surge Operating Life)
Autoclave, Unbiased
High-Temperature
(Bake) Storage Life
Temperature Cycle
JESD22-A101,
TA = 85°C, RH = 85%
JESD22-A108,
TA = 150°C, TJ = 165°C
JESD22-A108,
TA = 175°C, TJ = 190°C
JESD22-A102,
TA = 121°C, 15 psig
JESD22-A103,
TA = 170°C
JESD22-A104
1000 hrs
48
1000 hrs
48
168 hrs
48
96 hrs
48
1000 hrs
48
1000 cycles
60
Device biased for
minimum power
-55°C to +150°C
ESD,
Human Body Model
CDF-AEC-Q100-002
Pre/Post
Reading
3 per
test
Test to failure
All leads > x kV
115 Northeast Cutoff, Box 15036
10
Worcester, Massachusetts 01615-0036 (508) 853-5000
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