AC-coupled complementary push-pull ECL circuit with 34 fJ power-delay product

The authors describe the first experimental result of a high-speed low-power ECL-based AC-coupled complementary push-pull circuit. Implemented in a 0.8 mu m high-performance fully complementary bipolar technology with 50 GHz n-p-n transistors and 13 GHz p-n-p transistors, a power-delay product of 34 fJ (23.2 ps at 1.48 mW) has been achieved compared with 67 fJ (45 ps at 1.48 mW) for the n-p-n only ECL circuit.