Fig. 1.
Block diagram of the proposed digital isolator.
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| Citation: |
Feng Zhang, Ting Zhao, Chunyu Ma, Dongfang Pan. 4-port digital isolator based on on-chip transformer[J]. Journal of Semiconductors, 2018, 39(11): 115003. doi: 10.1088/1674-4926/39/11/115003
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F Zhang, T Zhao, C Y Ma, D F Pan, 4-port digital isolator based on on-chip transformer[J]. J. Semicond., 2018, 39(11): 115003. doi: 10.1088/1674-4926/39/11/115003.
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4-port digital isolator based on on-chip transformer
doi: 10.1088/1674-4926/39/11/115003
More Information-
Abstract
The design and fabrication results of a 4-port digital isolator based on an on-chip transformer for galvanic isolation are presented. An ON–OFF keying modulation scheme is used to transmit the digital signal. The proposed digital isolator is fabricated by the 0.18 μm CMOS process. A test chip can achieve a 1 MHz signal bandwidth, a 40 ns propagation delay, a 35.5 mW input power and a 50 mA drive output current. The proposed digital isolator is pin-compatible, of small volume and low power replacement for the common 4-port optocoupler.-
Keywords:
- optocoupler,
- 4-port,
- digital isolator,
- on-chip transformer
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References
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