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ATS673LSETN-LT-T Datasheet

  • ATS673LSETN-LT-T

  • Self-Calibrating TPOS Gear Tooth Sensor Optimized for Automo...

  • 20頁

  • ALLEGRO   ALLEGRO

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ATS673 and ATS674
Self-Calibrating TPOS Gear Tooth Sensor Optimized for
Automotive Cam Sensing Applications
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 sensors with
optimized Hall IC/magnet configuration in an SIP (single in-line package). The
SIP assembly consists of a molded package that holds together a samarium cobalt
magnet, a pole piece, and a true zero-speed Hall IC that has been optimized to the
magnetic circuit.
The sensor incorporates a single element Hall IC that switches in response to
magnetic signals created by a ferrous 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 performance independent
of air gap and also to dynamically adapt device performance to the typical
operating conditions found in automotive applications, particularly cam sensing
applications (reduced vibration sensitivity).
High-resolution (9-bit) peak detecting DACs are used to set the adaptive switching
thresholds of the devices, ensuring high accuracy even in the presence of gear
eccentricity. Hysteresis in the thresholds reduces the negative effects of anomalies
in the magnetic signal (such as magnetic overshoot) associated with the targets
used in many automotive applications. The ATS673 and 674 also include a low
bandwidth filter that increases the noise immunity and the signal to noise ratio of
the sensor.
Two options are available for output polarity, low over tooth (LT) and high over
tooth (HT). For applications requiring absolute accuracy use the ATS674. The
ATS673 should be used for targets with high wobble.
Package SE, 4-pin Through Hole
1
1. VCC
2. VOUT
3. TEST
4. GND
2
3
4
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
...........................................
28 V
Reverse-Supply Voltage, V
RCC
........................
鈥?8 V
Continuous Output Current, I
OUT
...................20
mA
Reverse-Output Current, I
ROUT
.......................50
mA
Operating Temperature
Ambient, T
A
, Range L................
鈥?0潞C to 150潞C
Maximum Junction, T
J(max)
........................165潞C
Storage Temperature, T
S
..................
鈥?5潞C to 170潞C
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/magnet system
AGC and reference adjust circuit
Undervoltage lockout
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ATS673LSE-DS

ATS673LSETN-LT-T 產(chǎn)品屬性

  • Current Sensor

  • 450

  • 傳感器，轉(zhuǎn)換器

  • 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC)

  • -

  • 40% 空氣間隙跳閘，50% 空氣間隙釋放

  • 專用型

  • 3.3 V ~ 26.5 V

  • 11mA

  • 20mA

  • 數(shù)字，開路集電極

  • 輪齒類型

  • -40°C ~ 150°C

  • 4-SIP

  • 4-SIP

  • 帶卷 (TR)

  • 620-1162-2

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