ATS675LSETN-HT-T Allegro, ATS675LSETN-HT-T Datasheet

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ATS675LSETN-HT-T

Manufacturer Part Number
ATS675LSETN-HT-T
Description
Manufacturer
Allegro

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATS675LSETN-HT-T
Manufacturer:
GENNUM
Quantity:
2 300
Features and Benefits
▪ Chopper stabilized; optimized for automotive cam
▪ Optimized absolute timing accuracy step size through
▪ High immunity to signal anomalies resulting from
▪ Tight timing accuracy over full operating
▪ True zero-speed operation
▪ Automatic Gain Control circuitry for air gap
▪ Operation at supply voltages down to 3.3 V
▪ Digital output representing target profile
▪ Undervoltage lockout (UVLO)
▪ Patented Hall IC-magnet system
▪ Increased output fall time for improved radiated
Package: 4-pin SIP module (suffix SE)
ATS675LSE-DS
sensing applications
gradual transition from TPOS to Running Mode
magnetic overshoot and peak-to-peak field variation
temperature range
independent switchpoints
emissions performance
1
2
Optimized for Automotive Cam Sensing Applications
3
4
Not to scale
C
0.1 μF
BYPASS
A
Figure 1. Operational circuit for the ATS675
Recommended
V
S
Typical Application
Self-Calibrating TPOS Speed Sensor
A
3
TEST
ATS675
VCC
GND
1
4
Description
The ATS675 is the next generation of the Allegro
Power-On State (TPOS) sensor family, offering improved
accuracy compared to prior generations, gradual TPOS to
Running Mode adjustment for accuracy-shift reduction,
and longer output fall time for improved radiated emissions
performance. The ATS675 provides absolute zero-speed
performance and TPOS information.
The sensor incorporates a single-element Hall IC with an
optimized custom magnetic circuit 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 device performance at zero target
speed, independent of air gap, and which adapts dynamically
to the typical operating conditions found in automotive
applications, particularly camshaft-sensing applications.
High resolution peak-detecting DACs are used to set the adaptive
switching thresholds of the device, ensuring high accuracy
despite target eccentricity. Internal hysteresis in the thresholds
reduces the negative effects of anomalies in the magnetic signal
(such as magnetic overshoot) associated with targets used in
many automotive applications. The resulting output of the
device is a digital representation of the ferromagnetic target
profile. The ATS675 also includes a low bandwidth filter that
increases the noise immunity and the signal-to-noise ratio of
the sensor.
The device package is lead (Pb) free, with 100% matte tin
leadframe plating.
OUT
2
V
C
PU
L
R
Sensor
Output
PU
ATS675LSE
®
True

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