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IP+
IP+
VCC
VIOUT
ACS712
IP
IP
FILTER
GND
2
4
+5 V
18
7 VOUT
IP
3 6
5
CF1 nF
Fully Integrated, Hall Effect-Based Linear Current Sensor
with 2.1 !"#S !oltage Isolation and a Low-"esistance Current Conductor
Features and Benefits
Low-noise analog signal path Device bandwidth is set via the new FILTER pin
5 s output rise time in response to step input current
! "#$ bandwidth
Total output error %&5' at T() *5+, mall .ootprint/ low-pro.ile 0I, pac"age
%&* m1 internal conductor resistance
*&% "2R3 minimum isolation voltage .rom pins %-4 to pins 5-
5&! 2/ single suppl operation
66 to %5 m27( output sensitivit
0utput voltage proportional to (, or D, currents
Factor-trimmed .or accurac
E8tremel stable output o..set voltage
9earl $ero magnetic hsteresis Ratiometric output .rom suppl voltage
TV Ame!"#Ce$!%!"#$e N&m'e(U8V )6 )5 54214 )1)
Package: 8 Lead SOIC (suffix LC)
Description
The (llegro: (,;%* provides economical and precisesolutions .or (, or D, current sensing in industrial/
commercial/ and communications sstems& The device
pac"age allows .or eas implementation b the customer&
Tpical applications include motor control/ load detection
and management/ switched-mode power supplies/ and
overcurrent .ault protection&
The device consists o. a precise/ low-o..set/ linear #all
sensor circuit with a copper conduction path located near the
sur.ace o. the die& (pplied current .lowing through this
copper conduction path generates a magnetic .ield which is
sensed b the integrated #all I, and converted into a
proportional voltage& Device accurac is optimi$ed throughthe close pro8imit o. the magnetic signal to the #all
transducer& ( precise/ proportional voltage is provided b
the low-o..set/ chopper-stabili$ed
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Fully Integrated, Hall Effect-Based Linear Current Sensor with
2.1 !"#S !oltage Isolation and a Low-"esistance Current Conductor"CS#$%
*A//e0 :!"0S$em In",115 N0$e#$ C&$0%%;0"e$e :##"&e$$ )1615))36 U,S,A,
1,5)8,853,5)))5 185
ACS712ELCTR2)AT T#.e #n9 ee/ 3))) .!e"e=ee/ 4) $0 85 >2) 1))
ACS712ELCTR3)AT T#.e #n9 ee/ 3))) .!e"e=ee/ 4) $0 85 >3) 66?C0n$#"$ A//e0 %0 #99!$!0n#/ .#"@!n 0.$!0n,
"so!ute 2axiu -atings
C3aracteristic So! 'otes -ating 4nits
S&../ V0/$#e VCC 8 V
Reee S&../ V0/$#e VRCC ),1 V
O&$.&$ V0/$#e VIOUT 8 V
Reee O&$.&$ V0/$#e VRIOUT ),1 V
Re!n%0"e9 I0/#$!0n V0/$#e VISO
P!n 14 #n9 58< 6) B 1 m!n&$e TA25C 21)) V
V0/$#e #../!e9 $0 /e#9%#me I.+ .!n '#e90n IEC 6)5)
184 V.e#@
*#!" I0/#$!0n V0/$#e VISO'"
P!n 14 #n9 58< 6) B 1 m!n&$e TA25C 15)) VV0/$#e #../!e9 $0 /e#9%#me I.+ .!n '#e90n IEC 6)5)
354 V.e#@
O&$.&$ C&en$ S0&"e IIOUTS0&"e 3 mA
O&$.&$ C&en$ S!n@ IIOUTS!n@ 1) mA
Oe"&en$ T#n!en$ T0/e#n"e IP 1 .&/e 1)) m 1)) A
N0m!n#/ O.e#$!n Am'!en$ Tem.e#$&e TA R#ne E 4) $0 85 HC
:#!m&m J&n"$!0n Tem.e#$&e TJm# 165 HC
S$0#e Tem.e#$&e T$ 65 $0 17) HC
Paraeter Specification
F!e #n9 E/e"$!" S0"@CAN=CSAC22,2 N0, 6)5)1)3
UL 6)5)1(2))3EN 6)5)1(2))1
http://www.allegromicro.com/http://www.allegromicro.com/http://www.allegromicro.com/7/24/2019 Datasheet(ACS712)093
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SeneT!m
Functiona! B!ock Diagra
+5 V
VCCP!n 8
#// C&en$D!e
IP+P!n 1
IP+P!n 2
Sene Tem.e#$&eC0e%%!"!en$ T!m
IPP!n 3
IPP!n 4
S!n#/Re"0e
) Am.ee
O%%e$ A9K&$
RFEINT
VIOUTEP!n 7
GNDP!n 5 FILTER
P!n 6
Pin5out Diagra
IP+ 1 8 VCC
IP+ 2 7 VIOUT
IP 3 6 FILTER
IP 4 5 GND
Terina! List Ta!e
'uer 'ae Description
1 #n9 2 IP+ Tem!n#/ %0 "&en$ 'e!n ene9< %&e9 !n$en#//
3 #n9 4 IP Tem!n#/ %0 "&en$ 'e!n ene9< %&e9 !n$en#//
5 GND S!n#/ 0&n9 $em!n#/
6 FILTER Tem!n#/ %0 e$en#/ "#.#"!$0 $#$ e$ '#n9!9$
7 VIOUT An#/0 0&$.&$ !n#/
8 VCC De!"e .0e &../ $em!n#/
D6n#m!"O%%2e$
C#n"e//#$!0n
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CO22O' OP6-"TI'& C7"-"CT6-ISTICS$ 0e %&// #ne 0% TA CF 1 nF #n9 VCC 5 V &n/e 0$e!e .e"!%!e9C3aracteristic So! Test Conditions 2in Tp 2ax 4nits
6L6CT-IC"L C7"-"CT6-ISTICS
S&../ V0/$#e VCC 4,5 5,) 5,5 V
S&../ C&en$ ICC VCC 5,) V 0&$.&$ 0.en 1) 13 mA
O&$.&$ C#.#"!$#n"e L0#9 CLOAD VIOUT $0 GND 1) nF
O&$.&$ Re!$!e L0#9 RLOAD VIOUT $0 GND 4,7 @
P!m# C0n9&"$0 Re!$#n"e RPRI:AR TA 25C 1,2 m
R!e T!me $ IP IPm# TA 25C COUT 0.en 5 -
FeM&en" *#n9!9$ % 3 9* TA 25C< IP ! 1) A .e#@$0.e#@ 8) @B
N0n/!ne#!$ ELIN Oe %&// #ne 0% IP 1,5 Smme$ ES: Oe %&// #ne 0% IP 8 1)) 1)2
e0 C&en$ O&$.&$ V0/$#e VIOUT *!9!e"$!0n#/< IP ) A TA 25C VCC Q
),5 V
P0eOn T!me $POO&$.&$ e#"e ) 0% $e#9$#$e /ee/ TJ 25C 2) A .een$0n /e#9%#me
35 -
:#ne$!" C0&./!n2 12 G=A
In$en#/ F!/$e Re!$#n"e3 RFINT 1,7 @1De!"e m# 'e 0.e#$e9 #$ !e .!m# "&en$ /ee/ IP #n9 #m'!en$ TA #n9 !n$en#/ /e#9%#me $em.e#$&e TA .0!9e9 $#$ $e :#!m&mJ&n"$!0n Tem.e#$&e TJm# ! n0$ e"ee9e9,21G ),1 mT,3RFINT %0m #n RC "!"&!$ !# $e FILTER .!n,
CO22O' T76-2"L C7"-"CT6-ISTICS$
:!n, T., :#, Un!$
O.e#$!n In$en#/ Le#9%#me Tem.e#$&e TA E #ne 4) 85 C
V#/&e Un!$
J&n"$!0n$0Le#9 Tem#/ Re!$#n"e2 RJL :0&n$e9 0n $e A//e0 ASE 712 e#/$!0n '0#9 5 C=;
J&n"$!0n$0Am'!en$ Tem#/ Re!$#n"e RJA
:0&n$e9 0n $e A//e0 85)322 e#/$!0n '0#9 !n"/&9e $e .0e "0n
&me9 ' $e '0#923 C=;
1A99!$!0n#/ $em#/ !n%0m#$!0n ! ##!/#'/e 0n $e A//e0 e'!$e,2Te A//e0 e#/$!0n '0#9 # 15)) mm2 0% 2 0B, "0..e 0n e#" !9e "0nne"$e9 $0 .!n 1 #n9 2 #n9 $0 .!n 3 #n9 4 !$ $em#/ !# "0nne"$!n $e /#e, Pe%0m#n"e #/&e !n"/&9e $e .0e "0n&me9 ' $e PC*, F&$e 9e$#!/ 0n $e '0#9 #e ##!/#'/e %0m $e FeM&en$/ A@e9&e$!0n 90"&men$ 0n 0& e'!$e, F&$e !n%0m#$!0n #'0&$ '0#9 9e!n #n9 $em#/ .e%0m#n"e #/0 "#n 'e %0&n9 !n $e A../!"#$!0n In%0m#$!0n e"$!0n 0% $! 9#$#ee$,
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x9B P6-FO-2"'C6 C7"-"CT6-ISTICS TA 4)C $0 85C1 CF 1 nF #n9 VCC 5 V &n/e 0$e!e .e"!%!e9
C3aracteristic So! Test Conditions 2in Tp 2ax 4nits
O.$!m!Be9 A""" R#ne IP 5 5 ASen!$!!$ Sen Oe %&// #ne 0% IPTA 25C 18) 185 1) mV=A
N0!e VNOISEPPPe#@$0.e#@ TA 25C 185 mV=A .0#mme9 Sen!$!!$CF 47 nF COUT 0.en 2 @B '#n9!9$
21 mV
e0 C&en$ O&$.&$ S/0.e IOUTTA 4)C $0 25C ),26 mV=C
TA 25C $0 15)C ),)8 mV=C
Sen!$!!$ S/0.e SenTA 4)C $0 25C ),)54 mV=A=C
TA 25C $0 15)C ),))8 mV=A=C
T0$#/ O&$.&$ E02 ETOT IP >5 A TA 25C >1,5 1De!"e m# 'e 0.e#$e9 #$ !e .!m# "&en$ /ee/ IP #n9 #m'!en$ $em.e#$&e TA .0!9e9 $#$ $e :#!m&m J&n"$!0n Tem.e#$&e TJm#! n0$ e"ee9e9,2Pe"en$#e 0% IP !$ IP 5 A, O&$.&$ %!/$ee9,
x%9" P6-FO-2"'C6 C7"-"CT6-ISTICS TA 4)C $0 85C1 CF 1 nF #n9 VCC 5 V &n/e 0$e!e .e"!%!e9
C3aracteristic So! Test Conditions 2in Tp 2ax 4nits
O.$!m!Be9 A""" R#ne IP 2) 2) A
Sen!$!!$ Sen Oe %&// #ne 0% IPTA 25C 6 1)) 1)4 mV=A
N0!e VNOISEPPPe#@$0.e#@ TA 25C 1)) mV=A .0#mme9 Sen!$!!$CF 47 nF COUT 0.en 2 @B '#n9!9$
11 mV
e0 C&en$ O&$.&$ S/0.e IOUTTA 4)C $0 25C ),34 mV=C
TA 25C $0 15)C ),)7 mV=C
Sen!$!!$ S/0.e SenTA 4)C $0 25C ),)17 mV=A=C
TA 25C $0 15)C ),))4 mV=A=C
T0$#/ O&$.&$ E02 ETOT IP >2) A TA 25C >1,5 1De!"e m# 'e 0.e#$e9 #$ !e .!m# "&en$ /ee/ IP #n9 #m'!en$ $em.e#$&e TA .0!9e9 $#$ $e :#!m&m J&n"$!0n Tem.e#$&e
TJm# ! n0$ e"ee9e9,2Pe"en$#e 0% IP !$ IP 2) A, O&$.&$ %!/$ee9,
x;9" P6-FO-2"'C6 C7"-"CT6-ISTICS TA 4)C $0 85C1 CF 1 nF #n9 VCC 5 V &n/e 0$e!e .e"!%!e9
C3aracteristic So! Test Conditions 2in Tp 2ax 4nits
O.$!m!Be9 A""" R#ne IP 3) 3) A
Sen!$!!$ Sen Oe %&// #ne 0% IP TA 25C 64 66 68 mV=A
N0!e VNOISEPPPe#@$0.e#@ TA 25C 66 mV=A .0#mme9 Sen!$!!$CF 47 nF COUT 0.en 2 @B '#n9!9$
7 mV
e0 C&en$ O&$.&$ S/0.e IOUTTA 4)C $0 25C ),35 mV=C
TA 25C $0 15)C ),)8 mV=C
Sen!$!!$ S/0.e SenTA
4)C $0 25C ),))7 mV=A=C
TA 25C $0 15)C ),))2 mV=A=C
T0$#/ O&$.&$ E02 ETOT IP >3) A TA 25C >1,5 1De!"e m# 'e 0.e#$e9 #$ !e .!m# "&en$ /ee/ IP #n9 #m'!en$ $em.e#$&e TA .0!9e9 $#$ $e :#!m&m J&n"$!0n Tem.e#$&eTJm# ! n0$ e"ee9e9,2Pe"en$#e 0% IP !$ IP 3) A, O&$.&$ %!/$ee9,
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