CQ-206B Datasheet PDF - Asahi Kasei Microsystems
| Part Number | CQ-206B | |
| Description | High-Speed Small-Sized Current Sensor | |
| Manufacturers | Asahi Kasei Microsystems | |
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[CQ-206B]
CQ-206B
High-Speed Small-Sized Current Sensor
Overview
CQ-206B 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. Simple AI-Shell package with the Hall sensor,
magnetic core, and primary conductor realizes the space-saving and high reliability.
Features
- Unidirectional type
- Electrical isolation between the primary conductor and the sensor signal
- 5V single supply operation
- Ratiometric output
- Low variation and low temperature drift of sensitivity and offset voltage
- Low noise output: 2.1mVrms (max.)
- Fast response time: 1μs (typ.)
- Small-sized package, halogen free
Functional Block Diagram
P
Magnetic
Core
Amplifier
Buffer
VOUT
Hall
Sensor
Compensation
VSS
Bias Unit
EEPROM Unit
VDD
DATA_IO SCLK
N
Figure 1. Functional block diagram of CQ-206B
MS1444-E-01
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2013/06
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[CQ-206B]
Characteristics Definitions
(1) Sensitivity Vh [mV/mT], offset 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 voltage (VOUT) when the primary current (IIN) is swept within the range of linear
sensing range (INS). Offset voltage is defined as the intercept of the approximate straight line above.
(2) Linearity error ρ [%F.S.]
Linearity error is defined as the ratio of the maximum error voltage (Vd) to the full scale (F.S.), where Vd is
the maximum difference between the VOUT voltage (VOUT) and the approximate straight line calculated in
the sensitivity and offset voltage definition. Definition formula is shown in below:
ρ = Vd / F.S. × 100
NOTE) Full scale (F.S.) is defined by the multiplication of the linear sensing range and sensitivity (See
Figure 5).
VOUT(V)
Approximate straight line
by least square method
Vd
F.S.
=Vh×INS
0 IIN (A)
Figure 5. Output characteristics of CQ-206B
(3) Ratiometric error of sensitivity Vh-R [%] and ratiometric error of offset voltage Vof-R [%]
Output of CQ-206B is ratiometric, which means the values of sensitivity (Vh) and offset 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 = 5V)) − (VDD1 / 5)} / (VDD1 / 5)
Vof-R = 100 × ( Vof(VDD = VDD1) − Vof(VDD = 5V) × (VDD1 / 5 ) / F.S.
(4) Temperature drift of sensitivity Vh-d [%]
Temperature drift of sensitivity is defined as the drift ratio of the sensitivity (Vh) at Ta=Ta1 (−40C<Ta1<90C)
to the Vh at Ta=35C, and calculated from the formula below:
Vh-d = 100 × (Vh(Ta1) / Vh(35C) − 1)
Maximum temperature drift of sensitivity (Vh-dmax) is defined as the maximum value of |Vh-d| through
−40C<Ta1<90C. (continued)
MS1444-E-01
-5-
2013/06
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CQ-206B electronic component. |
| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ CQ-206B.PDF Datasheet ] | |
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