Product Overview
The CQ-2235 is a high-speed, small-sized, open-type current sensor that utilizes a Quantum Well ultra-thin film InAs Hall sensor. It provides an analog voltage output proportional to AC/DC current, enabling high-accuracy and high-speed current sensing. The integrated AI-Shell package, combining the Hall sensor, magnetic core, and primary conductor, ensures space-saving design and high reliability. It is suitable for applications requiring electrical isolation between the primary conductor and the sensor signal, operating on a 3.3V single supply.
Product Attributes
- Brand: Asahi Kasei Microdevices (AKM)
- Sensor Type: Hall Effect
- Package Type: AI-Shell
- Material: Quantum well ultra-thin film InAs (Indium Arsenide) for Hall sensor; Halogen-free
- Certifications: IEC/UL 60950-1, UL 508, CSA C22.2 No. 14 (IEC 62109 certification pending)
- RoHS Compliant: Yes
Technical Specifications
| Parameter | Symbol | Conditions | Min. | Typ. | Max. | Units | Notes |
|---|---|---|---|---|---|---|---|
| Maximum Primary Current (RMS) | IRMSmax | -50 | 50 | A | |||
| Current Consumption | IDD | No loads | 6.2 | 9.6 | mA | ||
| Sensitivity | Vh | See Figure 5 | 15.5 | mV/A | Note 1 | ||
| Offset Voltage | Vof | IIN = 0A | 1.650 | V | Note 1 | ||
| Linear Sensing Range | INS | -85 | 85 | A | |||
| Linearity Error | See Figure 5, Figure 6 | -1 | 1 | %F.S. | Note 1 | ||
| Rise Response Time | tr | CL = 100pF, See Figure 9 | 1 | s | |||
| Fall Response Time | tf | CL = 100pF, See Figure 9 | 1 | s | |||
| Bandwidth | fT | -3dB, CL = 100pF | 300 | kHz | |||
| Output Noise | VNrms | 100Hz to 4MHz | 1.2 | mVrms | Note 2 | ||
| Temperature Drift of Sensitivity | Vh-dmax | Ta = 40 to 110C, See Figure 7 | 0.4 | % | |||
| Temperature Drift of Offset Voltage | Vof-dmax | Ta = 40 to 110C, IIN = 0A, See Figure 8 | 2.5 | mV | |||
| Ratiometric Error of Sensitivity | Vh-R | VDD = 2.97V to 3.63V | -1 | 1 | % | Note 2 | |
| Ratiometric Error of Offset Voltage | Vof-R | VDD = 2.97V to 3.63V, IIN = 0A | -0.6 | 0.6 | %F.S. | Note 2 | |
| Total Accuracy | ETO | Ta = 40 to 110C, 54A IIN 54A | 1.3 | %F.S. | Note 3 | ||
| Primary Conductor Resistance | R1 | 100 | |||||
| Isolation Voltage | VINS | AC 50/60Hz, 60sec | 3 | kV | Note 2 | ||
| Isolation Resistance | RINS | DC 1kV | 500 | M | Note 2 | ||
| Clearance Distance | dCL | between the primary and the secondary | 13.3 | mm | Note 2 | ||
| Creepage Distance | dCP | between the primary and the secondary | 13.3 | mm | Note 2 | ||
| Supply Voltage | VDD | Recommended Operating Conditions | 2.7 | 3.3 | 3.63 | V | |
| Analog Output Current | IOUT | Recommended Operating Conditions | -0.5 | 0.5 | mA | VOUT pin | |
| Output Load Capacitance | CL | Recommended Operating Conditions | 100 | pF | VOUT pin | ||
| Operating Ambient Temperature | Ta | Recommended Operating Conditions | -40 | 110 | C | See Figure 4 |
Notes:
Note 1: These parameters can drift by the values in 14. Reliability Tests after the reflow and over the lifetime of this product.
Note 2: These parameters are guaranteed by design.
Note 3: Total accuracy ETO is calculated by the equation below. ETO = |100 (Vh_meas 15.5) / 15.5| + |100 (Vof_meas Vof_meas_35) / (15.5 85 2)| + |meas|
2411272100_AKM-CQ2235_C1574473.pdf
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