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Current Sensor. ACS712 Datasheet

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Current Sensor. ACS712 Datasheet






ACS712 Sensor. Datasheet pdf. Equivalent




ACS712 Sensor. Datasheet pdf. Equivalent





Part

ACS712

Description

Fully Integrated / Hall Effect-Based Linear Current Sensor



Feature


ACS712 Fully Integrated, Hall-Effect-Bas ed Linear Current Sensor IC with 2.1 kV RMS Isolation and a Low-Resistance Curr ent Conductor FEATURES AND BENEFITS Low-noise analog signal path ▪ De vice bandwidth is set via the new FILTE R pin ▪ 5 µs output rise time in re sponse to step input current ▪ 80 kH z bandwidth ▪ Total output error 1.5 % at TA = 25°C ▪ Small footp.
Manufacture

Allegro MicroSystems

Datasheet
Download ACS712 Datasheet


Allegro MicroSystems ACS712

ACS712; rint, low-profile SOIC8 package ▪ 1.2 mΩ internal conductor resistance ▪ 2.1 kVRMS minimum isolation voltage f rom pins 1-4 to pins 5-8 ▪ 5.0 V, si ngle supply operation ▪ 66 to 185 mV /A output sensitivity ▪ Output volta ge proportional to AC or DC currents Factory-trimmed for accuracy ▪ Ex tremely stable output offset voltage Nearly zero magnetic hysteresis ▪.


Allegro MicroSystems ACS712

Ratiometric output from supply voltage TÜV America Certificate Number: U8V 1 5 05 54214 038 CB 13 06 54214 026 Packa ge: 8-Lead SOIC (suffix LC) DESCRIPTIO N The Allegro™ ACS712 provides econom ical and precise solutionsforACorDCcurr entsensinginindustrial, commercial, and communications systems. The device pac kage allows for easy implementation by the customer. Typical.


Allegro MicroSystems ACS712

applications include motor control, loa d detection and management, switchmode power supplies, and overcurrent fault p rotection. The device is not intended f or automotive applications. The device consists of a precise, low-offset, line ar Hall circuit with a copper conductio n path located near the surface of the die. Applied current flowing through th is copper conducti.

Part

ACS712

Description

Fully Integrated / Hall Effect-Based Linear Current Sensor



Feature


ACS712 Fully Integrated, Hall-Effect-Bas ed Linear Current Sensor IC with 2.1 kV RMS Isolation and a Low-Resistance Curr ent Conductor FEATURES AND BENEFITS Low-noise analog signal path ▪ De vice bandwidth is set via the new FILTE R pin ▪ 5 µs output rise time in re sponse to step input current ▪ 80 kH z bandwidth ▪ Total output error 1.5 % at TA = 25°C ▪ Small footp.
Manufacture

Allegro MicroSystems

Datasheet
Download ACS712 Datasheet




 ACS712
ACS712
Fully Integrated, Hall-Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
FEATURES AND BENEFITS
▪ Low-noise analog signal path
▪ Device bandwidth is set via the new FILTER pin
▪ 5 µs output rise time in response to step input current
▪ 80 kHz bandwidth
▪ Total output error 1.5% at TA = 25°C
▪ Small footprint, low-profile SOIC8 package
▪ 1.2 mΩ internal conductor resistance
▪ 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
▪ 5.0 V, single supply operation
▪ 66 to 185 mV/A output sensitivity
▪ Output voltage proportional to AC or DC currents
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Nearly zero magnetic hysteresis
▪ Ratiometric output from supply voltage
TÜV America
Certificate Number:
U8V 15 05 54214 038
CB 13 06 54214 026
Package: 8-Lead SOIC (suffix LC)
DESCRIPTION
The AllegroACS712 provides economical and precise
solutionsforACorDCcurrentsensinginindustrial, commercial,
and communications systems. The device package allows for
easy implementation by the customer. Typical applications
include motor control, load detection and management, switch-
mode power supplies, and overcurrent fault protection. The
device is not intended for automotive applications.
The device consists of a precise, low-offset, linear Hall circuit
with a copper conduction path located near the surface of 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 magnetic signal to the Hall transducer.
A precise, proportional voltage is provided by the low-offset,
chopper-stabilized BiCMOS Hall IC, which is programmed
for accuracy after packaging.
The output of the device has a positive slope (>VIOUT(Q))
when an increasing current flows through the primary copper
conduction path (from pins 1 and 2, to pins 3 and 4), which is
the path used for current sampling. The internal resistance of
this conductive path is 1.2 mΩ typical, providing low power
loss. The thickness of the copper conductor allows survival of
Continued on the next page…
Not to scale
Typical Application
1 IP+
VCC 8
2 IP+ VIOUT 7
IP ACS712
3 IP– FILTER 6
4 IP– GND 5
+5 V
VOUT
CBYP
0.1 µF
CF
1 nF
ACS712-DS, Rev. 19
MCO-0000197
Application 1. The ACS712 outputs an analog signal, VOUT .
that varies linearly with the uni- or bi-directional AC or DC
primary sampled current, IP , within the range specified. CF
is recommended for noise management, with values that
depend on the application.
January 30, 2020




 ACS712
ACS712
Fully Integrated, Hall-Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
DESCRIPTION (continued)
the device at up to 5× overcurrent conditions. The terminals of the
conductive path are electrically isolated from the signal leads (pins
5 through 8). This allows the ACS712 to be used in applications
requiring electrical isolation without the use of opto-isolators or
other costly isolation techniques.
TheACS712 is provided in a small, surface mount SOIC8 package.
The leadframe is plated with 100% matte tin, which is compatible
with standard lead (Pb) free printed circuit board assembly processes.
Internally, the device is Pb-free, except for flip-chip high-temperature
Pb‑based solder balls, currently exempt from RoHS. The device is
fully calibrated prior to shipment from the factory.
SELECTION GUIDE
Part Number
Packing*
ACS712ELCTR-05B-T
Tape and reel, 3000 pieces/reel
ACS712ELCTR-20A-T
Tape and reel, 3000 pieces/reel
ACS712ELCTR-30A-T
Tape and reel, 3000 pieces/reel
*Contact Allegro for additional packing options.
TA
(°C)
–40 to 85
–40 to 85
–40 to 85
Optimized Range, IP
(A)
±5
±20
±30
Sensitivity, Sens
(Typ) (mV/A)
185
100
66
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Supply Voltage
VCC
Reverse Supply Voltage
VRCC
Output Voltage
VIOUT
Reverse Output Voltage
VRIOUT
Output Current Source
IIOUT(Source)
Output Current Sink
IIOUT(Sink)
Overcurrent Transient Tolerance
Nominal Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
IP
TA
TJ(max)
Tstg
1 pulse, 100 ms
Range E
Notes
Rating
8
–0.1
8
–0.1
3
10
100
–40 to 85
165
–65 to 170
Units
V
V
V
V
mA
mA
A
°C
°C
°C
ISOLATION CHARACTERISTICS
Characteristic
Symbol
Notes
Dielectric Strength Test Voltage*
VISO
Agency type-tested for 60 seconds per
UL standard 60950-1, 1st Edition
Working Voltage for Basic Isolation
VWFSI
For basic (single) isolation per UL standard
60950-1, 1st Edition
Working Voltage for Reinforced Isolation
VWFRI
For reinforced (double) isolation per UL standard
60950-1, 1st Edition
* Allegro does not conduct 60-second testing. It is done only during the UL certification process.
Rating
2100
354
184
Unit
VAC
VDC or Vpk
VDC or Vpk
Parameter
Fire and Electric Shock
Specification
CAN/CSA-C22.2 No. 60950-1-03
UL 60950-1:2003
EN 60950-1:2001
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2




 ACS712
ACS712
Fully Integrated, Hall-Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
VCC
(Pin 8)
IP+
(Pin 1)
IP+
(Pin 2)
Hall Current
Drive
IP
(Pin 3)
IP
(Pin 4)
FUNCTIONAL BLOCK DIAGRAM
Sense Temperature
Coefficient Trim
Sense
Trim
Signal
Recovery
0 Ampere
Offset Adjust
RF(INT)
GND
(Pin 5)
FILTER
(Pin 6)
+5 V
VIOUT
(Pin 7)
Terminal List
Number
1 and 2
3 and 4
5
6
7
8
Name
IP+
IP–
GND
FILTER
VIOUT
VCC
Pinout Diagram
IP+ 1
IP+ 2
IP– 3
IP– 4
8 VCC
7 VIOUT
6 FILTER
5 GND
Description
Terminals for current being sampled; fused internally
Terminals for current being sampled; fused internally
Signal ground terminal
Terminal for external capacitor that sets bandwidth
Analog output signal
Device power supply terminal
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
3



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