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CQ-206B Datasheet Download - Asahi Kasei Microsystems

Номер произв CQ-206B
Описание High-Speed Small-Sized Current Sensor
Производители Asahi Kasei Microsystems
логотип Asahi Kasei Microsystems логотип 

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CQ-206B Даташит, Описание, Даташиты
[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
-1-
2013/06







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CQ-206B Даташит, Описание, Даташиты
[CQ-206B]
Circuit Blocks
Circuit Block
Hall Sensor
Amplifier
Buffer
Compensation
Bias Unit
EEPROM Unit
Magnetic Core
Table 1. Explanation of circuit blocks
Function
Hall element which detects magnetic flux density generated from the measured current.
Amplifier of Hall elements output.
Output buffer with gain. This block outputs the voltage (VOUT) proportional to the current
applied to the primary conductor.
Compensation circuit which adjusts the temperature drifts of sensitivity and offset voltage.
Drive circuit for Hall element.
Non-volatile memory for setting adjustment parameters. The parameters are adjusted before
the shipment.
Magnetic core which gathers the magnetic flux density to the Hall element.
Typical Output Characteristics
VOUT
VDD
NP
VsatH
CQ-206B
(Top View)
IIN
VDD
VOUT
0.45V
VsatL
0 P→N
Figure 2. Typical output characteristics of CQ-206B
INS
IIN
Pin/Function
Table 2. Pin-out description
No. Name
I/O
Description
1 DATA_IO
- Test pin (connect to ground)
2 VDD
- Power supply pin (5V)
3 VSS
- Ground pin (0V)
4 VOUT
O Analog output pin
5 SCLK
- Test pin (connect to ground)
6P
7N
I Primary current pin (+)
I Primary current pin ()
MS1444-E-01
-2-
76
CQ-206B
(Top View)
1 2 345
Figure 3. Pin-out diagram
2013/06







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CQ-206B Даташит, Описание, Даташиты
[CQ-206B]
Absolute Maximum Ratings
Table 3. Absolute maximum ratings
Parameter
Symbol
Min.
Max.
Units
Notes
Supply Voltage
Analog Output Current
Storage Temperature
VDD
IOUT
Tstg
0.3
1
40
6.5 V VDD
1 mA VOUT
125 C
WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal
operation is not guaranteed at these extremes.
Primary Current Derating Curve
Conditions: Mounted on the test board complying with the EIA/JEDEC Standards (EIA/JESD51.)
60
50
40
30
20
10
0
-60 -40 -20 0 20 40 60
Ta []
NOTE) Cooling or thermal radiation will improve the derating curve above.
80
Figure 4. Primary current derating curve of CQ-206B
100
Recommended Operating Conditions
Table 4. Recommended operating conditions
Parameter
Symbol Min. Typ. Max. Units
Notes
Supply Voltage
Output Current
Output Load
Capacitance
VDD 4.5 5.0
IOUT 0.5
CL
5.5 V
0.5 mA VOUT
100 pF VOUT
Operating Ambient
Temperature
Ta
40
90 C
NOTE: Electrical characteristics are not guaranteed when operated at or beyond these conditions.
MS1444-E-01
-3-
2013/06










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