ACS712ELCTR-30A-T Allegro Microsystems Inc, ACS712ELCTR-30A-T Datasheet

IC, HALL EFFECT SENSOR, Linear, SOIC-8

ACS712ELCTR-30A-T

Manufacturer Part Number
ACS712ELCTR-30A-T
Description
IC, HALL EFFECT SENSOR, Linear, SOIC-8
Manufacturer
Allegro Microsystems Inc
Series
-r
Datasheet

Specifications of ACS712ELCTR-30A-T

Msl
MSL 2 - 1 Year
Accuracy %
1.5%
Output Current
10mA
Termination Type
SMD
Bandwidth
80kHz
Supply Voltage Max
5V
Primary Sensed Current +
30A
Primary Sensed Current -
30A
Featured Product
Allegro® ACS712 Current Sensor IC
Current - Sensing
±30A
Accuracy
±1.5%
Sensitivity
63 ~ 69 mV/A
Current - Supply
10mA
Sensor Type
Hall Effect
Voltage - Supply
4.5 V ~ 5.5 V
Output
2.5V
Frequency
80kHz
Response Time
5µs
Polarization
Bidirectional
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (0.154", 3.90mm Width)
Filter Terminals
SMD
Rohs Compliant
Yes
Hall Effect Type
Linear
Leaded Process Compatible
Yes
No. Of Pins
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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 T
▪ 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
Package: 8 Lead SOIC (suffix LC)
ACS712-DS, Rev. 13
Approximate Scale 1:1
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
TÜV America
Certificate Number:
U8V 06 05 54214 010
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
A
= 25°C
Application 1. The ACS712 outputs an analog signal, V
that varies linearly with the uni- or bi-directional AC or DC
primary sampled current, I
is recommended for noise management, with values that
depend on the application.
I
P
1
2
3
4
Typical Application
IP+
IP+
IP–
IP–
ACS712
FILTER
VIOUT
GND
VCC
P
, within the range specified. C
8
7
6
5
Description
The Allegro
solutions for AC or DC current sensing in industrial, 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 (>V
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…
V
C
1 nF
OUT
F
+5 V
®
C
0.1 μF
BYP
ACS712 provides economical and precise
OUT
F
.
ACS712
IOUT(Q)
)

ACS712ELCTR-30A-T Summary of contents

Page 1

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 ...

Page 2

... Selection Guide Part Number 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. Absolute Maximum Ratings Characteristic Supply Voltage Reverse Supply Voltage ...

Page 3

ACS712 with VCC (Pin 8) Hall Current Drive IP+ Sense Temperature (Pin 1) IP+ (Pin 2) IP− (Pin 3) IP− (Pin 4) Terminal List Table Number 1 and 2 3 and Fully Integrated, Hall Effect-Based ...

Page 4

ACS712 with COMMON OPERATING CHARACTERISTICS Characteristic Symbol ELECTRICAL CHARACTERISTICS Supply Voltage V CC Supply Current I CC Output Capacitance Load C LOAD Output Resistive Load R LOAD Primary Conductor Resistance R PRIMARY Rise Time t r Frequency Bandwidth f Nonlinearity ...

Page 5

ACS712 with x05B PERFORMANCE CHARACTERISTICS Characteristic Symbol Optimized Accuracy Range I P Sensitivity Sens Noise V NOISE(PP) Zero Current Output Slope ∆I OUT(Q) Sensitivity Slope ∆Sens 2 Total Output Error E TOT 1 Device may be operated at higher primary ...

Page 6

ACS712 with Mean Supply Current versus Ambient Temperature 10.30 10.25 10.20 10.15 10. 10.05 CC 10.00 9.95 9.90 9.85 9.80 9.75 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 ...

Page 7

ACS712 with Mean Supply Current versus Ambient Temperature 9.7 9.6 9 9.4 CC 9.3 9.2 9.1 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 –0.5 –1.0 –1.5 –2.0 –2.5 ...

Page 8

ACS712 with Mean Supply Current versus Ambient Temperature 9.6 9.5 9 9.3 CC 9.2 9.1 9.0 8.9 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 –0.5 –1.0 –1.5 –2.0 ...

Page 9

ACS712 with Definitions of Accuracy Characteristics Sensitivity (Sens). The change in device output in response change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity ( and the linear ...

Page 10

ACS712 with Definitions of Dynamic Response Characteristics Power-On Time (t ). When the supply is ramped to its operat- PO ing voltage, the device requires a finite time to power its internal components before responding to an input magnetic field. ...

Page 11

ACS712 with Chopper Stabilization is an innovative circuit technique that is used to minimize the offset voltage of a Hall element and an asso- ciated on-chip amplifier. Allegro patented a Chopper Stabiliza- tion technique that nearly eliminates Hall IC output ...

Page 12

ACS712 with + BYP 0.1 μ OUT 1 VCC 0.1 μF IP OUT + VIOUT IP – ACS712 10 kΩ MΩ 3 FILTER IP– ...

Page 13

ACS712 with Improving Sensing System Accuracy Using the FILTER Pin In low-frequency sensing applications often advantageous to add a simple RC filter to the output of the device. Such a low- pass filter improves the signal-to-noise ratio, and ...

Page 14

ACS712 with 4.90 ±0. 0.10 C 0.51 0.31 1.27 BSC For Reference Only; not for tooling use (reference MS-012AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead ...

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