Cross-Coupling Low-Triggering Dual-Polarity CLTdSCR ESD Protection in CMOS

This letter reports a novel ultrafast cross-coupling low-triggering dual-polarity SCR (CLTdSCR) ESD protection network in a CMOS. The measurement shows ultralow and tunable triggering voltage V<sub>t1</sub> ~ 3.83 V, low discharging resistance R<sub>οn</sub> 0.26 Ω, low leakage I<sub>leak</sub> ~ 0.36 nA, low noise figure NF ~ 0.2 dB, low parasitic capacitance C<sub>ESD</sub> ~ 150 fF, and fast effective response t<sub>1</sub> ~ 100 ps. It achieves a very high ~7 V/μm<sup>2</sup> ESD protection level.