参数资料
型号: ASEK712ELC-05B-T-DK
厂商: Allegro Microsystems Inc
文件页数: 12/15页
文件大小: 0K
描述: BOARD EVAL FOR ASEK712ELC-05B
设计资源: ACS7xx Demo Brd BOM/Schematics
标准包装: 1
传感器类型: 电流传感器
传感范围: -5 A ~ 5 A
灵敏度: 185mV/A
电源电压: 4.5 V ~ 5.5 V
嵌入式:
已供物品:
已用 IC / 零件: ASEK712ELC-05B
其它名称: 620-1431
ACS712
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
Typical Applications
+5 V
V PEAK
+5 V
C BYP
0.1 μF
C2
0.1 μF
V RESET
C BYP
0.1 μF
R1
100 kΩ
IP+
R3
330 kΩ
IP+
I P
1
2
3
4
VCC
IP+ VIOUT
ACS712
IP– FILTER
IP–
GND
8
7
6
5
R F
10 kΩ
C OUT
0.1 μF
V OUT
R1
1 MΩ
C F
1 nF
R2
33 kΩ
R4
10 kΩ
U1 D1
LT1178 1N914
C1
0.1 μF
Q1
2N7002
I P
1
2
3
4
VCC
IP+ VIOUT
ACS712
IP– FILTER
IP–
GND
8
7
6
5
R2
100 kΩ
R F
1 kΩ
C F
0.01 μF
1
3
LM321
5
4
2
R3
3.3 kΩ
V OUT
C1
1000 pF
Application 3. This configuration increases gain to 610 mV/A
(tested using the ACS712ELC-05A).
Application 2. Peak Detecting Circuit
+5 V
+5 V
C BYP
C BYP
0.1 μF
R1
33 kΩ
IP+ VIOUT
IP– FILTER
IP–
R1
IP+
I P
0.1 μF
1 VCC
IP+
2
ACS712
3
4
GND
8
7
6
5
V OUT
R F
2 kΩ
10 kΩ
C F
1 nF
D1
1N4448W
C1
A-to-D
Converter
I P
1
2
3
4
VCC
IP+ VIOUT
ACS712
IP– FILTER
IP–
GND
8
7
6
5
R2
100 kΩ
V OUT
C F
1 nF
4
3
+
R PU
100 kΩ
5
1 Fault
2 U1
LMV7235
D1
1N914
Application 4. Rectified Output. 3.3 V scaling and rectification application
for A-to-D converters. Replaces current transformer solutions with simpler
ACS circuit. C1 is a function of the load resistance and filtering desired.
R1 can be omitted if the full range is desired.
Application 5. 10 A Overcurrent Fault Latch. Fault threshold set by R1 and
R2. This circuit latches an overcurrent fault and holds it until the 5 V rail is
powered down.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
12
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