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Everlight Product Introduction
The CEK87 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kV RMS according to DIN EN IEC 607 47 17 (VDE 0884 17) and UL1577. The high impedance input of the CEK87 is optimized for connection to high impedance res istive dividers or any other high impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed loop systems. The integrated missing high side supply voltage detection feature simplifies system level design and diagnostics.
Features
- -0,1V to 2,0V, high impedance Input Voltage range optimized for voltage measurement
- Low offset error and drift: 2.5mV (max), ±10μV/°C (max)Fixed Gain: 1
- Low Gain error and drift: ±0.3% (max), ±30ppm/°C (max)
- Low nonlinearity and drift: 0.04%, ±1ppm/°C (typical)
- 3,3V to 5V operation on high side
- Missing high-side supply indication
- Up to 25V VDD Output Drive Supply
- High CMTI: 150kV/ μs (typical)
- Operating Temperature -40°C to 125°C
- Pb-Free, RoHs compliant
- Compliant to EU REACH
Applications
- Isolated Voltages Sensing in:
- Motor Drives
- Frequency inverters
- Uninterruptible Power Supplies
