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ACS756 Datasheet(PDF) 4 Page - Allegro MicroSystems

Part No. ACS756
Description  The Allegro ACS756 family of current sensor ICs provides economical and precise solutions for AC or DC current sensing in industrial, automotive, commercial, and communications systems.
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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ACS756 Datasheet(HTML) 4 Page - Allegro MicroSystems

 
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Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 3 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS756
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
COMMON OPERATING CHARACTERISTICS1 over full range of TOP, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage2
VCC
3
5.0
5.5
V
Supply Current
ICC
VCC = 5.0 V, output open
10
14
mA
Power On Time
tPO
TA = 25°C
35
μs
Rise Time
tr
IP = three-quarter scale of IP+, TA = 25°C, COUT = 0.47 nF
3
μs
Internal Bandwidth3
BWi
–3 dB; IP is 10 A peak-to-peak; 100 pF from VIOUT to GND
120
kHz
Output Load Resistance
RLOAD(MIN)
VIOUT to GND
4.7
Output Load Capacitance
CLOAD(MAX)
VIOUT to GND
10
nF
Primary Conductor Resistance
RPRIMARY
TA = 25°C
130
μΩ
Symmetry
ESYM
Over half-scale of Ip
98.5
100
101.5
%
Bidirectional 0 A Output
VOUT(QBI)
IP = 0 A, TA = 25°C
VCC/2
V
Magnetic Offset Error
IERROM
IP = 0 A, after excursion of 100 A
±0.23
A
Ratiometry
VRAT
VCC = 4.5 to 5.5 V
100
%
Propagation Time
tPROP
TA = 25°C, COUT = 100 pF,
1
μs
1Device is factory-trimmed at 5 V, for optimal accuracy.
2Devices are programmed for maximum accuracy at 5.0 V VCC levels. The device contains ratiometry circuits that accurately alter the 0 A Output Volt-
age and Sensitivity level of the device in proportion to the applied VCC level. However, as a result of minor nonlinearities in the ratiometry circuit ad-
ditional output error will result when VCC varies from the 5 V VCC level. Customers that plan to operate the device from a 3.3 V regulated supply should
contact their local Allegro sales representative regarding expected device accuracy levels under these bias conditions.
3Guaranteed by design.


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