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发布时间：2010-07-31 浏览：11218次
The CQ-121E and 131E are open-loop type linear current sensors offered in ultra-compact package, compliant to IEC standard for insulation. The devices incorporate AKEMD’s low noise InAs-base Hall Element and high accuracy OP amplifier, simplifying the design of current sensing on an electrical board. The CQ-121E operates over at current range of +/-30A, while the CQ-131E operates over at the range of +/-60A. The CQ-121E/131E are offered with AKEMD's patented housing architecture in an 8x20x14 mm package which performs high noise tolerance of current sensing and enables the system to save extra component cost and the real estate required.
Features
|
Product Specifications |
Unit | |||
| Sensing Type | Open Loop Based on the Hall Effect |
|||
| Sensed Current Type | AC or DC | |||
| Isolation Voltage (within 60sec) |
1500 Typ. | V | ||
| Sensed Current Range | CQ-121E | CQ-131E | ||
| Sence Range | ± 30 | ± 60 *1 | A | |
| Linear Range | ± 25 | ± 50 *1 | A | |
| Sensitivity *2 | Max | 72 | 30 | |
| Type | 63.5 | 27 | mV/A | |
| Min | 55 | 24 | ||
| Sensitivity Temp. Drift | 0.04 Max. | %/℃ | ||
| Offset Voltage at no current |
2.35 to 2.65 | V | ||
| Offset voltage Temp. Drift |
0.5 Max. | mV/℃ | ||
| Linearity Error | 1.0 Max. | %FS | ||
| Sensed Current Frequency Response |
100 Typ. at -3dB | KHz | ||
| Response Time | 5.0 Max. | µs | ||
| Supply Voltage | 3.0 to 5.5 | V | ||
| Supply Current | 9.0 Typ. | mA | ||
| Operating Temperature | -30 to 80 | ℃ | ||
| Storage Temperature | -30 to 85 | ℃ | ||
| Dimension | 8.0(D) x 20.0(W) x 14(H) | mm | ||
*1: Specified for RMS of current. For DC current, +/-30 A Max is
guaranteed.
*2: Screening models by ranging of current sensitivity are available.
For details,contact AKEMD marketing office.
Architecture and Block Diagram
Applications
Current sensing in home appliances features:
- Vector Control
- Current Monitoring
- Over Current Protection
- Current Feedback System
- Wattmeter
Dimension and Marking
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