ATS610LSC Datasheet, PDF (1/12 Pages) Allegro MicroSystems – DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR

ATS610LSC
ATS610LSC ^{DYNAMIC, PEAK-DETECTING,}
DIFFERENTIAL HALL-EFFECT
GEAR-TOOTH SENSOR
DYNAMIC, PEAK-DETECTING, DIFFERENTIAL
HALL-EFFECT GEAR-TOOTH SENSOR
1 = Supply
2 = Output
3 = Ground
12 ³
Dwg. AH-008
PRELIMINARY INFORMATION
(subject to change without notice)
September 3, 1998
The ATS610LSC gear-tooth sensor is an optimized Hall IC plus
magnet subassembly that provides a user-friendly solution for digital
gear-tooth sensing applications. The subassembly combines in a
compact high-temperature plastic shell, a samarium-cobalt magnet, a pole
piece, a differential Hall-effect IC that has been optimized to the
magnetic circuit, and a voltage regulator. The sensor can be easily
used in conjunction with a wide variety of gear or target shapes and
sizes.
The ATS610LSC is designed to provide increased immunity to
false switching in applications that require the sensing of large-tooth
gears (e.g., crank angle or cam angle). The sensor subassembly is
ideal for use in gathering speed, position, and timing information using
gear-tooth-based configurations.
The gear-sensing technology used for this sensor plus magnet
subassembly is Hall-effect based. The sensor incorporates a
dual-element Hall IC that switches in response to differential magnetic
signals created by the ferrous target. The circuitry contains a patented
track-and-hold peak-detecting circuit to eliminate magnet and system
offset effects. This circuit has the ability to detect relatively fast changes,
such as those caused by gear wobble and eccentricities, and provides
stable operation at extremely low rotation speeds.
ABSOLUTE MAXIMUM RATINGS
over operating temperature range
Supply Voltage, V_CC ............................. 24 V
Reverse Supply Voltage,
V_RCC (1 minute max.) ................... -24 V
Output OFF Voltage, V_OUT .................... 18 V
Reverse Output Voltage, V_OUT .......... -0.5 V
Continuous Output Current, I_OUT ...... 25 mA
Package Power Dissipation,
P_D ........................................ See Graph
Operating Temperature Range,
T_A ............................... -40°C to +150°C
Storage Temperature, T_S ................ +170°C
FEATURES AND BENEFITS
s Fully Optimized Differential Digital Gear-Tooth Sensor
s Single-Chip Sensing IC for High Reliability
s Extremely Low Timing Accuracy Drift with Temperature
s Large Operating Air Gaps
s Small Mechanical Size
s Optimized Magnetic Circuit
s Patented Peak-Detecting Filter:
<200 µs Power-On Time
<10 RPM Operation (single-tooth target)
Correct First-Edge Detection
s Under-Voltage Lockout
s Wide Operating Voltage Range
s Defined Power-Up State
Always order by complete part number: ATS610LSC .