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CQ-2065 Schematic ( PDF Datasheet ) - Asahi Kasei Microsystems

Teilenummer CQ-2065
Beschreibung High-Speed Small-Sized Current Sensor
Hersteller Asahi Kasei Microsystems
Logo Asahi Kasei Microsystems Logo 




Gesamt 13 Seiten
CQ-2065 Datasheet, Funktion
[CQ-2065]
CQ-2065
High-Speed Small-Sized Current Sensor
Overview
CQ-2065 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
- Bidirectional 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
N DATA_IO SCLK
Figure 1. Functional block diagram of CQ-2065
MS1264-E-05
-1-
2013/06






CQ-2065 Datasheet, Funktion
[CQ-2065]
(5) Temperature drift of offset voltage Vof-d [mV]
Temperature drift of offset voltage is defined as the drift value between the offset voltage (Vof) at Ta=Ta1
(40C<Ta1<90C) and the Vof at Ta=35C, and calculated from the formula below:
Vof-d = Vof(Ta = Ta1) Vof(Ta = 35C)
Maximum temperature drift of offset voltage (Vof-dmax) is defined as the maximum value of |Vof-d| through the
defined temperature range.
Reference data of the temperature drift of offset voltage of CQ-2065 is shown in Figure 7.
5
4
3
VDD=5.0V
IIN=±85A
2
1
0
-1
-2
-3
-4
-5
-60 -40 -20 0 20 40 60 80 100 120
Ta [°C]
Figure 6. Temperature drift of sensitivity
of CQ-2065
(for reference, n=1)
40
30
VDD=5.0V
IIN=0A
20
10
0
-10
-20
-30
-40
-60 -40 -20 0 20 40 60 80 100 120
Ta [°C]
Figure 7. Temperature drift of offset voltage
of CQ-2065
(for reference, n=3)
(6) Rise response time tr [μs] and fall response time tf [μs]
Rise response time (or fall response time) is defined as the time delay from the 90% (or 10%) of input
primary current (IIN) to the 90% (or 10%) of the VOUT voltage (VOUT) under the pulse input of primary
current (see Figure 8.)
IIN IIN
VOUT
90% IIN
Time
VOUT
10% IIN
Time
90% Vout
10% Vout
tr
Time
tf
Time
Rise response time (tr)
Fall response time (tf)
Figure 8. Definition of response time
MS1264-E-05
-6-
2013/06

6 Page









CQ-2065 pdf, datenblatt
[CQ-2065]
Precautions
<Storage Environment>
Products should be stored at an appropriate temperature and humidity (5 to 35C, 40 to 85%RH).
Keep products away from chlorine and corrosive gas.
<Long-term Storage>
Long-term storage may result in poor lead solderability and degraded electrical performance even under proper
conditions. For those parts, which stored long –term shall be check solderability before it is used.
For storage longer than 2 years, it is recommended to store in nitrogen atmosphere. Oxygen of atmosphere oxidizes
leads of products and lead solderability get worse.
<Other precautions>
1) This product should not be used under the environment with corrosive gas including chlorine or sulfur.
2) This product is lead (Pb) free. All leads are plated with 100% tin. Do not store this product alone in high
temperature and high humidity environment. Moreover, this product should be mounted on substrate within
six months after delivery.
3) This product is damaged when it is used on the following conditions:
Supply voltage is applied in the opposite way.
Overvoltage which is larger than the value indicated in the specification.
4) This product will be damaged if it is used for a long time with the current (effective current) which exceeds the
current rating. Careful attention must be paid so that maximum effective current is smaller than current rating.
5) Since magnetic cores are fragile parts, do not use the fallen products.
6) The characteristic can change by the influences of nearby current and magnetic field. Please make sure of the
mounting position.
As this product contains gallium arsenide, observe the following procedures for safety.
1) Do not alter the form of this product into a gas, powder, liquid, through burning, crushing, or chemical processing.
2) Observe laws and company regulations when discarding this product.
MS1264-E-05
- 12 -
2013/06

12 Page





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