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ACS780XLR Datasheet(PDF) 1 Page - Allegro MicroSystems

Part No. ACS780XLR
Description  Core-less, micro-sized, 100 A continuous current package
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

ACS780XLR Datasheet(HTML) 1 Page - Allegro MicroSystems

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Application 1: The ACS780xLR outputs an analog signal, VOUT, that varies linearly with the bidirectional AC or DC primary
current, IP, within the range specified. CF is for optimal noise management, with values that depend on the application.
ACS780xLR
DESCRIPTION
The Allegro ACS780xLR is a fully integrated current sensor
linear IC in a new core-less package designed to senseAC and
DC currents up to 100 A. This automotive-grade, low-profile
(1.5 mm thick) sensor IC package has a very small footprint.
The Hall sensor technology also incorporates common-mode
field rejection to optimize performance in the presence of
interferingmagneticfieldsgeneratedbynearbycurrent-carrying
conductors.
Thedeviceconsistsofaprecision,low-offsetlinearHallcircuit
with a copper conduction path located near the die. Applied
current flowing through this copper conduction path generates
a magnetic field which the Hall IC converts into a proportional
voltage. Device accuracy is optimized through the close
proximity of the primary conductor to the Hall transducer and
factory programming of the sensitivity and quiescent output
voltage at the Allegro factory.
Chopper-stabilized signal path and digital temperature
compensation technology also contribute to the stability of the
device across the operating temperature range.
High-level immunity to current conductor dV/dt and stray
electricfieldsisofferedbyAllegroproprietaryintegratedshield
technology, for low-output voltage ripple and low-offset drift
in high-side, high-voltage applications.
Theoutputofthedevicehasapositiveslope(>VCC/2)whenan
increasingcurrentflowsthroughtheprimarycopperconduction
ACS780xLR-DS
High-Precision Linear Hall-Effect-Based
Current Sensor IC With 200 µΩ Current Conductor
Continued on the next page…
Typical Application
5 V
VOUT
RF
CF
CBYP
0.1 µF
IP+
IP–
GND
ACS780xLR
VOUT
VCC
IP
2
5
6
3
1
FEATURES AND BENEFITS
▪Core-less,micro-sized,100Acontinuouscurrentpackage
▪Ultra-lowpowerloss:200µΩinternalconductor
resistance
▪Immunitytocommon-modefieldinterference
▪Greatlyimprovedtotaloutputerrorthroughdigitally
programmed and compensated gain and offset over the full
operating temperature range
▪Industry-leadingnoiseperformancethroughproprietary
amplifier and filter design techniques
▪Integratedshieldgreatlyreducescapacitivecouplingfrom
current conductor to die due to high dV/dt signals, and
prevents offset drift in high-side, high-voltage applications
▪MonolithicHallICforhighreliability
▪4.5to5.5V,singlesupplyoperation
▪120kHztypicalbandwidth
▪3.6µsoutputrisetimeinresponsetostepinputcurrent
▪OutputvoltageproportionaltoACorDCcurrents
▪Factory-trimmedforaccuracy
▪Extremelystablequiescentoutputvoltage
▪AEC-Q100automotivequalification
PACKAGE:
7-pin PSOF package (suffix LR)
Not to scale


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