Integrated Circuit Electromagnetic Susceptibility Investigation - Phase 2. MOS NAND Gate Study
Abstract
The increasing availability of CMOS devices vis a vis to military system designers presents the possibility of significant differences from bipolar devices RF susceptibility. This report documents a preliminary investigation into possible differences between functionally similar devices (the 7400 bipolar NAND gate and the 4011 CMOS NAND gate) at four frequencies: . 22, .91, 3.0, and 5.6 GHz. While it is difficult to compare the observed susceptibility modes, it appears that the CMOS 4011 device is slightly less susceptible than the bipolar 7400 device. The underlying susceptibility mechanism can be explained by rectification of the RF signal in parasitic and protective pn junctions as in the bipolar devices, but the circuit reaction to these rectified currents and voltages is different.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 1974
- Accession Number
- ADB002276
Entities
People
- C. E. Clous
- J. M. Roe
- J. R. Chott
Organizations
- McDonnell Douglas