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CQ-330E Data Sheet PDF ( 数据手册 , 数据表 )

零件编号 CQ-330E
描述 High-Speed Response Coreless Current Sensor
制造商 Asahi Kasei Microsystems
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CQ-330E 数据手册, 描述, 功能
[CQ-330E]
CQ-330E
High-Speed Response Coreless Current Sensor
1. General Description
CQ-330E is an open-type current sensor using a Hall sensor which outputs the analog voltage proportional
to the AC/DC current. Quantum well ultra- thin film InAs (Indium Arsenide) is used as the Hall sensor, which
enables the high-accuracy and high-speed current sensing. Coreless surface mount package realizes the space-
saving.
2. Features
- Small-sized surface mount package: VSOP-24
- High isolation voltage: 3.0kV (50/60Hz, 60sec)
- Compliant to safety standards of IEC/UL-60950 and UL-508
- Ultra-fast response time: 0.5μsec (typ.)
- Low variation and low temperature drift of sensitivity and zero-current output voltage
- No output hysteresis
- Low noise output: 1.7mVrms (typ.)
- Uni-directional type
- 5V single power supply
- Ratiometric output
- Halogen free
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CQ-330E pdf, 数据表
[CQ-330E]
10. Characteristics Definitions
10.1. Sensitivity Vh [mV/A], Zero-current output Voltage Vof [V]
Sensitivity is defined as the slope of the approximate straight line calculated by the least square method,
using the data of VOUT pin voltage (VOUT) when the primary current (IIN) is swept within 0~10A.
Zero-current output voltage is defined as the intercept of the approximate straight line above.
10.2. Linearity Error ρ [%F.S.]
Linearity error is defined as the ration of the maximum error voltage (Vd) to the full scale (F.S.), where Vd is
the maximum difference between the VOUT pin voltage (VOUT) and the approximate straight line calculated
in the sensitivity and zero-current output voltage definition. Definition formula is shown in below:
ρ = Vd / F.S. × 100
Full scale (F.S.) is defined by the multiplication of the linear sensing range and sensitivity (Figure 4).
VOUT(V)
Approximate straight line
by least square method
F.S.
=Vh×|INS|
Actual output voltage
(Peak time: 35msec)
Vd
0 |INS| IIN(A)
Figure 4. Output characteristics of CQ-330E
10.3. Ratiometric Error of Sensitivity Vh-R [%] and Ratiometric Error of Zero-Current Output Voltage Vof-R
[%F.S.]
Output of CQ-330E is ratiometric, which means the values of sensitivity (Vh) and zero-current output
voltage (Vof) are proportional to the supply voltage (VDD). Ratiometric error is defined as the difference
between the Vh (or Vof) and ideal Vh (or Vof) when the VDD is changed from 5.0V to VDD1 (4.5V VDD1
5.5V). Definition formula is shown in below:
Vh-R = 100 × {(Vh(VDD = VDD1) / Vh(VDD = 5.0V)) (VDD1 / 5.0)} / (VDD1 / 5.0)
Vof-R = 100 × (Vof(VDD = VDD1) Vof(VDD = 5.0V) × VDD1 / 5.0) / F.S.
Full scale (F.S.) is defined by the multiplication of the linear sensing range and sensitivity at the condition of
VDD = 5.0V (Figure 4).
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CQ-330E equivalent, schematic
13. Board Layout Sample
[CQ-330E]
(a) Top pattern
(b) Bottom pattern
Board size: 35.5mm × 42.0mm
Board thickness: 1.6mm
Copper layer thickness: 70µm
For more information about board layout, please see the application note provided in the AKM website.
Figure 12. Board layout sample of CQ-330E
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