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CQ36 series

Coreless Current Sensor with ΣΔ Digital Output - Optimized for AC Servo Amplifiers and Robots

Significantly Reduces Heat Generation and Contributes to System Miniaturization

CQ36 series CQ36 series

Overview

  • Digital ΣΔ output
  • Low resistance
  • Low noise

The CQ36 contributes to: 

  • System miniaturization
  • Low heat generation
  • Precise torque control of robots

The CQ36 series has a built-in ΣΔ modulator that can replace both shunt resistor + isolated ADC a single component.

It is highly compatible with AC servo amplifiers and robots while contributing to system miniaturization.

Features

1. System downsizing

The current sensor and ΣΔ modulator are integrated into a single package. 

System downsizing can be achieved by omitting the necessary parts required for the conventional solution with a shunt resistor and an isolated ADC. 

No isolated power supply is required on the high-voltage side.

2. Low heat generation

AKM has developed a unique package to achieve a low primary conductor resistance of 0.27mΩ.

Compared to shunt resistors, this reduces heat generation, making thermal design easier.

3. Precise Torque control for AC servo amplifiers and robots

A low noise performance is achieved by leveraging the high sensitivity of compound Hall elements. This contributes to the precise torque control required for AC servo amplifiers and robots.

Applications

  • AC Servo amplifiers
  • Multi-axis robots
  • Collaborative Robots
  • Well-suited for applications requiring isolation, reduced heat generation, and system miniaturization.
    (Example: Suitable as a replacement for shunt + isolated ADC configurations.)

Product Information

CQ36 Series Block Diagram CQ36 Series Block Diagram

 

Series CQ36 Series
Current Sensor Type Coreless Current Sensor IC 
Currentier
Package Size  [mm] 12.7 x 10.9 x 2.25
Package Type Small-Sized
Surface Mount Package (SMD)
Power Supply Voltage [V]

AVDD = 5.0
(4.5 to 5.5)

DVDD =3.3
(3.0 to 3.6) 
Operating Temperature [℃] -40 to 125
Maximum Primary Current [Arms] 60
Working Voltage [Vrms]
(Pollution Degree=2)		 557
(Reinforced Insulation)
Creepage / Clearance Distance (Min.) [mm] 8.0
Primary Conductor Resistance (Typ.) [mΩ] 0.27
Isolation Voltage [kVrms] 5
(AC50Hz, 60s)
Stray Magnetic Field Reduction Yes
Ratiometric / Non-Ratiometric Non-Ratiometric
Safety Standards IEC/UL62368-1 Certified
UL1577 Certified
Pb Free Yes
Halogen Free Yes
MSL MSL2a
Packing Tape
Minimum Order Quantity [pcs.] 1000
Part Status MP

Example of replacement for shunt + isolated ADC

Example of replacement for shunt + isolated ADC

Lineup / Datasheet

Product 
Name		 CLK type


CLK Frequencty

[MHz]		 Linear 
Sensing 
Range
 Sensitivity
 Temperature 
Drift of 
Sensitivity *1		 Temperature 
Drift of 
Zero-Current
Output *1		 Total
Accuracy *2		 Datasheet 
Download
(PDF)
[A] [%/A] [%] [%F.S.] [%F.S.]
CQ-3601 Input 20 ±10.5 4 0.8 ±0.04 0.9 CQ-360x DS
CQ-3602 Input 20 ±21 2 0.8 ±0.02 0.8
CQ-3603 Input 20 ±42 1 0.8 ±0.01 0.8
CQ-3604 Input 20 ±60 0.7 0.8 ±0.01 0.8
CQ-3605 Input 20 ±84 0.5 0.8 ±0.01 0.8
CQ-3606 Input 20 ±168 0.25 0.8 ±0.01 0.9
CQ-3611 output 20 ±10.5 4 0.8 ±0.04 0.9 CQ-361x DS
CQ-3612 output 20 ±21 2 0.8 ±0.02 0.8
CQ-3613 output 20 ±42 1 0.8 ±0.01 0.8
CQ-3614 output 20 ±60 0.7 0.8 ±0.01 0.8
CQ-3615 output 20 ±84 0.5 0.8 ±0.01 0.8
CQ-3616 output 20 ±168 0.25 0.8 ±0.01 0.9
CQ-3621 Input 10 ±10.5 4 0.8 ±0.04 0.9 CQ-362x DS
CQ-3622 Input 10 ±21 2 0.8 ±0.02 0.8
CQ-3623 Input 10 ±42 1 0.8 ±0.01 0.8
CQ-3624 Input 10 ±60 0.7 0.8 ±0.01 0.8
CQ-3625 Input 10 ±84 0.5 0.8 ±0.01 0.8
CQ-3626 Input 10 ±168 0.25 0.8 ±0.01 0.9
CQ-3631 output 10 ±10.5 4 0.8 ±0.04 0.9 CQ-363x DS
CQ-3632 output 10 ±21 2 0.8 ±0.02 0.8
CQ-3633 output 10 ±42 1 0.8 ±0.01 0.8
CQ-3634 output 10 ±60 0.7 0.8 ±0.01 0.8
CQ-3635 output 10 ±84 0.5 0.8 ±0.01 0.8
CQ-3636 output 10 ±168 0.25 0.8 ±0.01 0.9

[Notes]

*1 It is defined as the "average value ± 1σ" of the actual measurement result (Ta = -10~85℃) in a certain lot.
*2 The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = -10~85℃) 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 = 0 to 90 °C) in a certain lot.

Technical information

You can use useful simulation or calculation tools for your design.Please note that you are required to register your information when using some of those tools.

Application Note

Application Note

Download our guide to the CQ36 series for key insights and design tips.

PDF

Download
PCB Design Kit

PCB Design Kit

We provide evaluation board Gerber data, PCB symbol, footprint, and 3D model.

 ZIP (1.43MB)

Download
MATLAB Simulation Model

MATLAB Simulation Model

We provide MATLAB/Simulink simulation models

Comming soon

FAQ

Product-related FAQs

Learn More

Quality Data

The AKM Group prepares quality data.

Certified with safety standards

The CQ36 series has UL62368, IEC62368, and UL1577 certifications. You can download a detailed PDF file below.

Design Support

You can use useful simulation or calculation tools for your design.Please note that you are required to register your information when using some of those tools.

Series lineup

Application Supply
Voltage
 Output
Voltage
 Effective
Current
 Measurement
Range
 Ratiometric/
Non-Ratiometric		 Creepage
Clearance
 Working
Voltage *
 Product
Series		 Part
Status
(V) (V) (Arms) (Apeak) (mm) (Vrms)
Industrial  5.0 5.0 100 ± 115 to ± 225 Ratiometric ≧ 8.0 1118 CZ375 Series MP
60 ± 5.3 to ± 180
 CZ370 Series MP
0 to 345.2 CZ372 Series MP
3.0 50 ± 11.6 to ± 166.6 Non-Ratiometric CZ3A Series MP
3.3 3.3 ± 12.9 to ± 129.1
AVDD=5.0V
DVDD=3.3V		 60 ± 10.5 to ± 168.0 CQ36 Series
(ΣΔ digital output) 		 MP
Automotive / Industrial 5.0 5.0 40 ± 20.9 to ± 154.0 Ratiometric ≧ 7.2 1013 CZ39 Series MP

* Pollution Degree II with basic insulation

Inquiries about Current Sensors

For any inquiries regarding products, samples, technology, consultations, estimates, or purchases, please feel free to contact us.

Contact AKM