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ACS723LLCTR-20AB-T

更新时间： 2025-09-15 18:59:19
品牌 Logo 应用领域
急速微 - ALLEGRO /
页数 文件大小 规格书
24页 1235K
描述
SENSOR CURRENT HALL 20A AC/DC

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ACS723LLCTR-20AB-T 数据手册

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ACS723  
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  
DESCRIPTION  
TheAllegro™ ACS723 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.  
• 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  
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.  
• Pin-selectable bandwidth: 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  
• 4.5 to 5.5 V, single supply operation  
• Output voltage proportional to AC or DC current  
• Factory-trimmed sensitivity and quiescent output voltage  
for improved accuracy  
Continued on the next page…  
The terminals of the conductive path are electrically isolated  
from the sensor leads (pins 5 through 8). This allows the  
ACS723 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.  
TÜV America  
Certificate Number:  
U8V 18 02 54214 041  
CB 14 11 54214 031  
UL Certified File  
No.: US-32848-UL  
PACKAGE: 8-pin SOIC (suffꢀix LC)  
Continued on the next page…  
Not to scale  
The ACS723 outputs an  
analog signal, VIOUT, that  
changes, proportionally,  
with the bidirectional AC or  
DC primary sensed current,  
IP, within the specified  
8
1
IP+  
IP+  
VCC  
+IP  
ACS723  
7
2
VIOUT  
measurement range. The  
I
CBYPASS  
0.1 µF  
P
BW_SEL pin can be used  
to select one of the two  
bandwidths to optimize the  
noise performance. Grounding  
the BW_SEL pin puts the part  
in the high bandwidth, 80 kHz,  
mode.  
6
5
3
4
BW_SEL  
GND  
IP–  
IP–  
–IP  
CL  
Typical Application  
ACS723-DS, Rev. 7  
MCO-0000538  
September 9, 2021  
1234567...24

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