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ACS722 데이터시트 PDF




Allegro MicroSystems에서 제조한 전자 부품 ACS722은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 ACS722 자료 제공

부품번호 ACS722 기능
기능 Galvanically Isolated Current Sensor IC
제조업체 Allegro MicroSystems
로고 Allegro MicroSystems 로고


ACS722 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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ACS722 데이터시트, 핀배열, 회로
ACS722
High Accuracy, Galvanically Isolated Current Sensor IC
With Small Footprint SOIC8 Package
FEATURES AND BENEFITS
• Patented integrated digital temperature compensation
circuitry allows for near closed loop accuracy over
temperature in an open loop sensor
• UL60950-1 (ed. 2) certified
□Dielectric Strength Voltage = 2.4 kVrms
□Basic Isolation Working Voltage = 420 Vpk/297
Vrms
• Industry-leading noise performance with greatly
improved bandwidth through proprietary amplifier and
filter design techniques
• Pin-selectable band width: 80 kHz for high bandwidth
applications or 20 kHz for low noise performance.
0.65 mΩ primary conductor resistance for low power
loss and high inrush current withstand capability
• Small footprint, low-profile SOIC8 package suitable for
space-constrained applications
• Integrated shield virtually eliminates capacitive coupling
from current conductor to die, greatly suppressing output
noise due to high dv/dt transients
• 3 to 3.6 V, single supply operation
Continued on the next page…
Package: 8-pin SOIC (suff ix LC)
CB Certif icate Number:
US-22334-A1-UL
Approximate Scale 1:1
DESCRIPTION
The AllegroACS722 current sensor IC is an economical and
precise solution for AC or DC current sensing in industrial,
commercial, and communications systems. The small package
is ideal for space constrained applications while also saving
costs due to reduced board area. Typical applications include
motor control, load detection and management, switched-mode
power supplies, and overcurrent fault protection.
The device consists of a precise, low-offset, linear Hall
sensor 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 is sensed by
the integrated Hall IC and converted into a proportional voltage.
Device accuracy is optimized through the close proximity of the
magnetic field to the Hall transducer. A precise, proportional
voltage is provided by the low-offset, chopper-stabilized
BiCMOS Hall IC, which includes Allegro’s patented digital
temperature compensation, resulting in extremely accurate
performance over temperature. The output of the device has
a positive slope 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 sensing. The internal
resistance of this conductive path is 0.65 mΩ typical, providing
low power loss.
The terminals of the conductive path are electrically isolated
from the sensor leads (pins 5 through 8). This allows the
ACS722 current sensor IC to be used in high-side current sense
applications without the use of high-side differential amplifiers
or other costly isolation techniques.
The ACS722 is provided in a small, low profile surface mount
SOIC8 package. The leadframe is plated with 100% matte tin,
Continued on the next page…
ACS722-DS
1
IP+
8
VCC
+IP ACS722
2 IP+
7
VIOUT
IP
3 IP–
–IP
4
IP–
6
BW_SEL
GND 5
CL
Typical Application
CBYPASS
0.1 µF
The ACS722 outputs an
analog signal, VIOUT , that
changes, proportionally,
with the bidirectional AC or
DC primary sensed current,
IP , within the specified
measurement range. The
BW_SEL pin can be used
to select one of the two
bandwidths to optimize the
noise performance.




ACS722 pdf, 반도체, 판매, 대치품
ACS722
High Accuracy, Galvanically Isolated Current Sensor IC
With Small Footprint SOIC8 Package
VCC
Master Current
Supply
To All Subcircuits
POR
Programming
Control
Hall
Current
Drive
Temperature
Sensor
EEPROM and
Control Logic
IP+
Offset
Control
Sensitivity
IP+ Control
Tuned
Filter
IP
IP
BW_SEL GND
Functional Block Diagram
VIOUT
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4

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ACS722 전자부품, 판매, 대치품
ACS722
High Accuracy, Galvanically Isolated Current Sensor IC
With Small Footprint SOIC8 Package
xLLCTR-5AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless oth-
erwise specif ied
Characteristic
Symbol
Test Conditions
Min. Typ.
Max. Units
Nominal Performance
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
Sens
VIOUT(Q)
IPR(min) < IP < IPR(max)
Bidirectional; IP = 0 A
–5 – 5 A
– 264 – mV/A
VCC x
0.5
V
Accuracy Performance
Sensitivity Error
Esens
Offset Voltage
VOE
Total Output Error*
Lifetime Drift Characteristics
ETOT
TA = 25°C to 150°C; measured at IP = IPR(max)
TA = –40°C to 25°C; ; measured at IP = IPR(max)
IP = 0 A; TA = 25°C to 150°C
IP = 0 A; TA = -40°C to 25°C
IP = IPR(max), TA = 25°C to 150°C
IP = IPR(max), TA = –40°C to 25°C
–2 –
– ±2.5
–15 –
– ±20
–2.5 –
– ±3
2
15
2.5
%
%
mV
mV
%
%
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Esens_drift
Etot_drift
– ±2 – %
– ±2 – %
*Percentage of IP , with IP = IPR(max)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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