ATS610LSA Datasheet, PDF (1/16 Pages) Allegro MicroSystems – DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSORS

ATS610LSA AND
ATS611LSB
DYNAMIC, PEAK-DETECTING, DIFFERENTIAL
HALL-EFFECT GEAR-TOOTH SENSORS
1
2
3
4
Pin 1 = Supply
Pin 2 = Output
Pin 3 = Capacitor
Pin 4 = Ground
Dwg. AH-006
ABSOLUTE MAXIMUM RATINGS
over operating temperature range
Supply Voltage, V_CC ......................... 16 V*
Reverse Supply Voltage, V_RCC ....... -0.5 V
Output OFF Voltage, V_OUT ................. 18 V
Reverse Output Voltage, V_OUT ....... -0.5 V
Continuous Output Current, I_OUT ... 25 mA
Minimum External Capacitance,
C₃ ............................................. 0.1 µF
Package Power Dissipation,
P_D .................................... See Graph
Operating Temperature Range,
T_A ........................... -40°C to +150°C*
Storage Temperature, T_S ............ +170°C
* Operation at increased supply voltages with
external circuitry is described in Applications
Information. Devices for operation at increased
temperatures are available on special order.
The ATS610LSA and ATS611LSB gear-tooth sensors are opti-
mized Hall IC plus magnet modules that provide a user-friendly solu-
tion for digital gear-tooth sensing applications. Each module combines
in a compact high-temperature plastic package, a samarium-cobalt magnet, a
pole piece, and a differential Hall-effect IC that has been optimized to
the magnetic circuit. These sensors can be easily used in conjunction
with a wide variety of gear or target shapes and sizes.
The ATS610LSA 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 ATS611LSB is optimized
to sense fine-pitch gears over large working air gaps (e.g., transmis-
sion or ABS). These sensors are ideal for use in gathering speed,
position, and timing information using gear-tooth-based configurations.
The gear-sensing technology used for these sensor plus magnet
modules 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.
continued next page…
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
Uses Small Value Ceramic Capacitors
s Under-Voltage Lockout
s Wide Operating Voltage Range
s Defined Power-Up State
Always order by complete part number, e.g., ATS610LSA .