ATS674LSETN-LT Allegro Microsystems Inc, ATS674LSETN-LT Datasheet - Page 2

• Manufacturer Part Number: ATS674LSETN-LT
• Description: IC SENSOR GEAR TOOTH 4LEAD
• Manufacturer: Allegro Microsystems Inc
• Type: Special Purposer

Specifications of ATS674LSETN-LT

• Sensing Range: 30% of Air Gap Trip, 40% of Air Gap Release
• Voltage - Supply: 3.3 V ~ 26.5 V
• Current - Supply: 11mA
• Current - Output (max): 20mA
• Output Type: Digital, Open Collector
• Features: Gear Tooth Type
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Features and Benefits
▪ Tight timing accuracy over operating temperature range
▪ True zero-speed operation
▪ TPOS (True Power-On State)
▪ Air-gap-independent switchpoints
▪ High immunity to vibration
▪ Large operating air gaps
▪ Operation with supply voltages down to 3.3 V
▪ Digital output representing target profile
▪ Single-chip solution for high reliability
▪ Optimized Hall IC/magnetic system
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Packages: 4 pin SIP (suffix SE)
Not to scale
ATS673-DS, Rev. 3
Self-Calibrating TPOS Gear Tooth Sensor ICs Optimized for
V+
0.1 μF
C
BYPASS
VCC
Amp
Hall
Functional Block Diagram
Offset
Offset Adjust
Temperature
Coefficient
Regulator
(Analog)
Voltage
Adjust
TC
Automotive Cam Sensing Applications
V
REG(A)
GND
Regulator
Voltage
(Digital)
TPOS Trim
LPF
TPOS
(Recommended)
V
REF
V
REG(D)
V
REG(A)
Comp_P
Comp_N
Power-On
Reset
Automatic
Control
Gain
Update Logic
Update Logic
Continuous
Continuous
Description
Recognizing the increasingly stringent requirements for EMC/
EMI in automotive applications, Allegro has taken the necessary
steps to design devices that are capable of withstanding the
effects of radiated and conducted transients. The ATS673
and ATS674 devices have been designed specifically for this
purpose. Advanced circuitry on the die allows them to survive
positive and negative transient pulses on both the input and
output.
The ATS673 and ATS674 devices retain all of the same
characteristics as the ATS671 and ATS672. The devices remain
true zero-speed gear tooth sensor ICs with optimized Hall IC/rae
earth pellet configuration in an SIP (single in-line package). The
SIP assembly consists of a molded package that holds together
a samarium cobalt pellet, a pole piece, and a true zero-speed
Hall IC that has been optimized to the magnetic circuit.
These devices incorporate a single element Hall IC that switches
in response to magnetic signals created by a ferromagnetic
target. The IC contains a sophisticated digital circuit designed
to eliminate the detrimental effects of magnet and system
offsets. Signal processing is used to provide zero-speed
Continued on the next page…
TEST
V
Output State
Output State
PROC
Clock
Clock
Comparator
Threshold
PDAC
9
Counter
Counter
9
NDAC
9-Bit
9-Bit
9-Bit
9-Bit
V
REG(D)
Output
Driver
Threshold
Output
VOUT
ATS673 and ATS674