Current Sensors
High accuracy, high S/N Ratio, and the fastest response time in open-type current sensors.
Asahi Kasei Microdevices, the leading company of magnetic sensors, provides long-awaited current sensor products 'CQ' series based on its accumulated experience and know-how.
'CQ' series are open-type current sensors which have the world's smallest package(*1), high accuracy, high S/N ratio, and the world's fastest response time(*2). With these advantages, we will offer the best current sensing solution to wide-ranging applications, such as inverter control, overcurrent detection, and electrical power detection.
*1 AKM's own investigation, among the current sensors with core in the world
*2 AKM's own investigation, among the open-type current sensors in the world
Ultra-high Accuracy Coreless Current Sensor supporting 60Arms
CZ-3A0x series:
CZ-3A01, CZ-3A02, CZ-3A03, CZ-3A04, CZ-3A05, CZ-3A06, CZ-3A07
Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-3A0x series coreless current sensor, which achieves both creepage distance and clearance greater than 8mm.
With a wide current detection lineup from ±12.9 to ±129.1App, 50Arms, and two overcurrent protection circuits, the CZ-3A0x series can be used for many applications including AC motors and general-purpose inverters.
In addition, it is suitable for a sensor signal input to a 3.3V A/D converter.
| Product Name |
Linear Sensing Range (A) |
Sensitivity (mV/A) |
Temperature Drift of Sensitivity (%) *1 |
Temperature Drift of Zero-Current Output (mV) *1 |
Total Accuracy (%F.S.) *2 |
Response Time (μs) |
|---|---|---|---|---|---|---|
| CZ-3A01 | ±12.9 | 120 |
±0.6 | ±2.8 | 0.2 (Typ.) 0.4 (Max.) |
1 |
| CZ-3A02 | ±15.5 | 100 |
||||
| CZ-3A03 | ±22.1 | 70 |
||||
| CZ-3A04 | ±32.2 | 48 |
||||
| CZ-3A05 | ±64.5 | 24 |
||||
| CZ-3A06 | ±103.3 | 15 |
||||
| CZ-3A07 | ±129.1 | 12 |
*1 It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.
*2 The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot. In the same manner, the minimum and maximum values are defined as the “average value ± 3σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.
Ultra-high Accuracy Unipolar Coreless Current Sensor supporting 60Arms
CZ-372x series:
CZ-3720, CZ-3721, CZ-3722, CZ-3723, CZ-3724, CZ-3725, CZ-3726
AKM develops new CZ-372x series of coreless current sensors of the unipolar detection type for power conditioner (DC side).
When measuring current flowing in one direction, higher SNR can be achieved compared to the bipolar detection type.
| Product Name |
Linear Sensing Range (A) |
Sensitivity (mV/A) |
Temperature Drift of Sensitivity (%) *1 |
Temperature Drift of Zero-Current Output (mV) *1 |
|---|---|---|---|---|
| CZ-3720 | -0.4 ~ 10.3 |
400 | ±0.6 | ±5.4 |
| CZ-3721 | -0.8 ~ 20.6 |
200 | ±4.4 | |
| CZ-3722 | -1.7 ~ 41.3 |
100 | ±3.8 | |
| CZ-3723 | -2.9 ~ 68.8 |
60 | ±3.6 | |
| CZ-3724 | -4.4 ~ 103.4 |
40 | ±3.5 | |
| CZ-3725 | -7.1 ~ 165.8 |
25 | ±3.5 | |
| CZ-3726 | -14.9 ~ 345.2 |
12 | ±3.4 |
*1 It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 0 to 90 °C) in a certain lot.
Ultra-high Accuracy Coreless Current Sensor supporting 60Arms
CZ-370x series:
CZ-3700, CZ-3701, CZ-3702, CZ-3703, CZ-3704, CZ-3705, CZ-3706
Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-370x series coreless current sensor, which achieving both creepage distance and clearance distance greater than 8 mm.
With a wide current detection lineup from ±5.3 to ±180 App, 60 Arms, the CZ-370x series can be used for many applications including AC motors and general inverters.
| Product Name |
Linear Sensing Range (A) |
Sensitivity (mV/A) |
Temperature Drift of Sensitivity (%) *1 |
Temperature Drift of Zero-Current Output (mV) *1 |
|---|---|---|---|---|
| CZ-3700 | ±5.3 | 400 | ±0.6 | ±5.4 |
| CZ-3701 | ±10.7 | 200 | ±4.4 | |
| CZ-3702 | ±21.5 | 100 | ±3.8 | |
| CZ-3703 | ±36 | 60 | ±3.6 | |
| CZ-3704 | ±54 | 40 | ±3.5 | |
| CZ-3705 | ±86.4 | 25 | ±3.5 | |
| CZ-3706 | ±180 | 12 | ±3.4 |
*1 It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 0 to 90 °C) in a certain lot.
Ultra-low Noise Coreless Current Sensor
AK310x series:
AK3101, AK3102, AK3103, AK3104, AK310H
AKM has developed ultra-low noise coreless current sensors for improving audio quality of large sized speakers such as subwoofers.
The AK310x series is suitable for a system which controls voicecoil motion in speakers (Motional Feedback) by current feedback. This series can be used for controlling industrial motors, since it is certified to UL safety standards.
Ultra-high Accuracy Coreless Current Sensor supporting operation up to 125°C
CZ-381x series:
CZ-3813, CZ-3814, CZ-3815
Even in a coreless architecture, CZ-381x series has a disturbing magnetic field suppression function on chip. This sensor measures the magnetic flux created by the current, but it will not sense the magnetic flux which wraps the whole sensor such as the disturbing magnetic field.
It is a current sensor that can take a more accurate measurement under large disturbing magnetic field. Because of the small package, it is very suitable for applications that have many current paths in a limited area such as the distribution board and the three-phase inverter circuit.
AKM can provide three types of different current sensing range products.
| Product Name |
Operating Ambient Temperature (°C) |
Linear Sensing Range (A) |
Sensitivity (mV/A) |
Temperature Drift of Sensitivity (%) *1 |
|---|---|---|---|---|
| CZ-3813 | -40 to 125 | ±33 | 60 | ±0.9 |
| CZ-3814 | ±50 | 40 | ||
| CZ-3815 | ±60 | 33 |
*1 It is defined as the "average value ± 1σ" of the actual measurement result (Ta = -40 to 125 °C) in a certain lot.
Ultra-small Coreless Current Sensor
CQ-320x series:
CQ-3200, CQ-3201, CQ-3202, CQ-320A, CQ-3203, CQ-3204, CQ-320B
CQ-320x series is a coreless current sensor in small size package with high galvanic isolation, especially designed for sensing the current range from 8.5 to 44A in 3.3V operation.
This low-voltage operating current sensor is suitable for air conditioning and solar power conditioner applications. Seven types of different current sensing range products are available.
| Product Name |
Sensitivity | Linear Sensing Range |
Maximum Effective Current |
Zero Current Voltage |
|---|---|---|---|---|
| CQ-3200 | 155mV/A | ±8.5A | ±20A | 1.65V |
| CQ-3201 | 130mV/A | ±10.1A | ||
| CQ-3202 | 62.5mV/A | ±21A | ||
| CQ-320A | 45mV/A | ±29.3A | ||
| CQ-3203 | 37mV/A | ±35A | ||
| CQ-3204 | 30mV/A | ±44A | ||
| CQ-320B | 120mV/A | -1 to 20.9A | 0.45V |
The open loop type coreless current sensors
CQ-330x series:
CQ-3300, CQ-3301, CQ-3302, CQ-3303, CQ-330A, CQ-330B, CQ-330E, CQ-330F, CQ-330G, CQ-330H
CQ-330x series are the open loop type coreless current sensors with fast response and high accuracy.
The open loop type current sensors
CQ-2 Series :
CQ-209x, CQ-206x, CQ-223x, CQ-233x
CQ-2 series are the open loop type current sensors with fast response and high accuracy.
Lineup
Current Sensors
Part Number |
Part Status |
Package Type (Mounting style) |
Maximum Effective Current [Arms] |
Linear Sensing Range (MIN.) [A] |
Linear Sensing Range (MAX.) [A] |
Sensitivity [mV/A] |
Response Time [μsec] |
Power Supply Voltage (MIN.) [V] |
Power Supply Voltage (TYP.) [V] |
Power Supply Voltage (MAX.) [V] |
Other |
Operating Temperature [℃] |
Device Package |
Number of Pins |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▲
▼
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▼
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▼
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▲
▼
|
AK310H |
MP |
SMD |
20 |
-42 |
42 |
50 |
2 |
4.5 |
5 |
5.5 |
-40 to 90 |
SOP |
14 |
|
CZ3700 |
MP |
SMD |
60 |
-5.3 |
5.3 |
400 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ2235 |
MP |
through hole type |
50 |
-85 |
85 |
15.5 |
1 |
2.7 |
3.3 |
3.63 |
-30 to 80 |
SIP |
7 |
|
CQ3202 |
MP |
SMD |
20 |
-21.1 |
21.1 |
62.5 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CZ3725 |
MP |
SMD |
60 |
-7.1 |
165.8 |
25 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ330A |
MP |
SMD |
20 |
-31.8 |
31.8 |
66 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ236B |
MP |
through hole type |
50 |
0 |
25 |
160 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CZ3814 |
MP |
SMD |
40 |
-50 |
50 |
40 |
2 |
4.5 |
5 |
5.5 |
-40 to 125 |
SOP |
10 |
|
CQ209A |
MP |
SMD |
20 |
-31.8 |
31.8 |
66 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ330E |
MP |
SMD |
20 |
0 |
20.5 |
200 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ209B |
MP |
SMD |
20 |
-35 |
0 |
115 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CZ3A05 |
MP |
SMD |
50 |
-64.5 |
64.5 |
24 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CZ3A04 |
MP |
SMD |
50 |
-32.2 |
32.2 |
48 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CZ3726 |
MP |
SMD |
60 |
-14.9 |
345.2 |
12 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CZ3703 |
MP |
SMD |
60 |
-36 |
36 |
60 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ2332 |
MP |
through hole type |
50 |
-21 |
21 |
100 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ3303 |
MP |
SMD |
20 |
-35 |
35 |
60 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CZ3813 |
MP |
SMD |
40 |
-33 |
33 |
60 |
2 |
4.5 |
5 |
5.5 |
-40 to 125 |
SOP |
10 |
|
AK3103 |
MP |
SMD |
20 |
-35 |
35 |
60 |
2 |
4.5 |
5 |
5.5 |
-40 to 90 |
SOP |
14 |
|
CZ3706 |
MP |
SMD |
60 |
-180 |
180 |
12 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CZ3720 |
MP |
SMD |
60 |
-0.4 |
10.3 |
400 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ2065 |
MP |
through hole type |
50 |
-85 |
85 |
25 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ2093 |
MP |
SMD |
20 |
-35 |
35 |
60 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ2335 |
MP |
through hole type |
50 |
-85 |
85 |
25 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ320B |
MP |
SMD |
20 |
-1.1 |
20.9 |
120 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CQ330G |
MP |
SMD |
20 |
-4.5 |
4.5 |
450 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ2232 |
MP |
through hole type |
50 |
-21 |
21 |
62.5 |
1 |
2.7 |
3.3 |
3.63 |
-30 to 80 |
SIP |
7 |
|
CZ3702 |
MP |
SMD |
60 |
-21.5 |
21.5 |
100 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ206B |
MP |
through hole type |
50 |
0 |
45 |
90 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ330J |
MP |
SMD |
20 |
-2 |
42 |
82.7 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ3300 |
MP |
SMD |
20 |
-6.4 |
6.4 |
325 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CZ3AG6 |
MP |
SMD |
50 |
-93.3 |
93.3 |
15 |
3.6 |
4.5 |
5 |
5.5 |
-40 to 85 |
SOP |
10 |
|
AK3102 |
MP |
SMD |
20 |
-21 |
21 |
100 |
2 |
4.5 |
5 |
5.5 |
-40 to 90 |
SOP |
14 |
|
CZ3701 |
MP |
SMD |
60 |
-10.7 |
10.7 |
200 |
1 |
4.5 |
5.0 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ3201 |
MP |
SMD |
20 |
-10.1 |
10.1 |
130 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CZ3721 |
MP |
SMD |
60 |
-0.8 |
20.6 |
200 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CZ3722 |
MP |
SMD |
60 |
-1.7 |
41.3 |
100 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ3204 |
MP |
SMD |
20 |
-44 |
44 |
30 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CQ2234 |
MP |
through hole type |
50 |
-54 |
54 |
24.5 |
1 |
2.7 |
3.3 |
3.63 |
-30 to 80 |
SIP |
7 |
|
CQ2092 |
MP |
SMD |
20 |
-21 |
21 |
100 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CZ3723 |
MP |
SMD |
60 |
-2.9 |
68.8 |
60 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ206A |
MP |
through hole type |
50 |
-46 |
46 |
45 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ2064 |
MP |
through hole type |
50 |
-54 |
54 |
40 |
1 |
4.5 |
5 |
5.5 |
-40 to 90 |
SIP |
7 |
|
CZ3704 |
MP |
SMD |
60 |
-54 |
54 |
40 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ330H |
MP |
SMD |
20 |
-42 |
42 |
50 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ2366 |
MP |
through hole type |
50 |
-170 |
170 |
12 |
1.5 |
4.5 |
5 |
5.5 |
-40 to 110 |
SIP |
7 |
|
CZ3724 |
MP |
SMD |
60 |
-4.4 |
103.4 |
40 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CQ3302 |
MP |
SMD |
20 |
-21 |
21 |
100 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CZ3AG4 |
MP |
SMD |
50 |
-29.1 |
29.1 |
48 |
3.6 |
4.5 |
5 |
5.5 |
-40 to 85 |
SOP |
10 |
|
CZ3A07 |
MP |
SMD |
50 |
-129.1 |
129.1 |
12 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CQ3203 |
MP |
SMD |
20 |
-35.7 |
35.7 |
37 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CQ2334 |
MP |
through hole type |
50 |
-54 |
54 |
40 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CZ3705 |
MP |
SMD |
60 |
-86.4 |
86.4 |
25 |
1 |
4.5 |
5 |
5.5 |
-40 to 105 |
SOP |
10 |
|
CZ3AG1 |
MP |
SMD |
50 |
-11.6 |
11.6 |
120 |
3.6 |
4.5 |
5 |
5.5 |
-40 to 85 |
SOP |
10 |
|
CZ3AG5 |
MP |
SMD |
50 |
-58.3 |
58.3 |
24 |
3.6 |
4.5 |
5 |
5.5 |
-40 to 85 |
SOP |
10 |
|
CQ330F |
MP |
SMD |
20 |
-2 |
42 |
80 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CZ3815 |
MP |
SMD |
40 |
-60 |
60 |
33.3 |
2 |
4.5 |
5 |
5.5 |
-40 to 125 |
SOP |
10 |
|
CZ3A03 |
MP |
SMD |
50 |
-22.1 |
22.1 |
70 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CQ330B |
MP |
SMD |
20 |
0 |
21 |
195 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ2333 |
MP |
through hole type |
50 |
-35 |
35 |
60 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CQ3200 |
MP |
SMD |
20 |
-8.5 |
8.5 |
155 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CQ320A |
MP |
SMD |
20 |
-29.3 |
29.3 |
45 |
0.5 |
2.7 |
3.3 |
3.63 |
-40 to 85 |
VSOP |
10 |
|
CQ2063 |
MP |
through hole type |
50 |
-35 |
35 |
60 |
1 |
4.5 |
5 |
5.5 |
-40 to 90 |
SIP |
7 |
|
CQ3301 |
MP |
SMD |
20 |
-10.7 |
10.7 |
195 |
0.5 |
4.5 |
5 |
5.5 |
-40 to 85 |
VSOP |
10 |
|
CQ2233 |
MP |
through hole type |
50 |
-35 |
35 |
37.5 |
1 |
2.7 |
3.3 |
3.63 |
-30 to 80 |
SIP |
7 |
|
CZ3A02 |
MP |
SMD |
50 |
-15.5 |
15.5 |
100 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CQ209D |
MP |
SMD |
20 |
-41 |
41 |
50 |
1 |
4.5 |
5 |
5.5 |
-30 to 80 |
SIP |
7 |
|
CZ3A01 |
MP |
SMD |
50 |
-12.9 |
12.9 |
120 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
CZ3A06 |
MP |
SMD |
50 |
-103.3 |
103.3 |
15 |
1 |
3 |
3.3 |
3.6 |
-40 to 85 |
SOP |
10 |
|
AK3101 |
MP |
SMD |
20 |
-10.7 |
10.7 |
195 |
2 |
4.5 |
5 |
5.5 |
-40 to 90 |
SOP |
14 |
