ATS645 Allegro MicroSystems, Inc., ATS645 Datasheet - Page 10

• Manufacturer Part Number: ATS645
• Description: Ats645lsh True Zero Speed Miniature Gear-tooth Sensors
• Manufacturer: Allegro MicroSystems, Inc.

ATS645LSH
Power Supply Protection
The device contains an on-chip regulator and can operate over
a wide V
unregulated power supply, transient protection must be added
externally. For applications using a regulated line, EMI/RFI pro-
tection may still be required. Contact Allegro Microsystems for
information on the circuitry needed for compliance with various
EMC specifi cations. Refer to fi gure 7 for an example of a basic
application circuit.
Undervoltage Lockout
When the supply voltage falls below the undervoltage lockout
CC
range. For devices that need to operate from an
Figure 7: Typical Application Circuit
True Zero Speed Miniature Differential Peak-
Pins 2 and 3 floating
ECU
V+
100 Ω
R
SENSE
ATS645
GND
VCC
4
1
voltage, V
returns to the Power-On State (POS) until suffi cient V
plied. I
V
Assembly Description
This sensor is integrally molded into a plastic body that has been
optimized for size, ease of assembly, and manufacturability.
High operating temperature materials are used in all aspects
of construction.
CC
< V
Detecting Gear Tooth Sensor
CC
CC(min)
levels may not meet datasheet limits when
CC(UV)
C
0.01
BYP
.
, the device enters Reset, where the output state
µF
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
CC
is sup-
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