An ultra-high-speed, master-slave voltage comparator circuit is designed and fabricated using InP/GaInAs double heterojunction bipolar transistor technology with a current gain cutoff frequency of 170 GHz. The complet...An ultra-high-speed, master-slave voltage comparator circuit is designed and fabricated using InP/GaInAs double heterojunction bipolar transistor technology with a current gain cutoff frequency of 170 GHz. The complete chip die, including bondpads, is 0.75 × 1.04 mm22. It consumes 440 mW from a single M V power supply, excluding the clock part. 77 DHBTs have been used in the monolithic comparator. A full Nyquist test has been performed up to 20 GHz, with the input sensitivity varying from 6 mV at l0 GHz to 16 mV at 20 GHz. To our knowledge, this is the first InP based integrated circuit including more than 70 DHBTs, and it achieves the highest sampling rate found on the mainland of China.展开更多
A new explanation of quaternary Q gate expression in Post algebra is given in this paper by using transmission function theory proposed in [1] and the quaternary ECL Q gate circuit is de- signed.The SPICE2 simulation ...A new explanation of quaternary Q gate expression in Post algebra is given in this paper by using transmission function theory proposed in [1] and the quaternary ECL Q gate circuit is de- signed.The SPICE2 simulation to this circuit has confirmed that it has desired logical function and is totally compatible with various quaternary ECL circuits proposed before.展开更多
文摘An ultra-high-speed, master-slave voltage comparator circuit is designed and fabricated using InP/GaInAs double heterojunction bipolar transistor technology with a current gain cutoff frequency of 170 GHz. The complete chip die, including bondpads, is 0.75 × 1.04 mm22. It consumes 440 mW from a single M V power supply, excluding the clock part. 77 DHBTs have been used in the monolithic comparator. A full Nyquist test has been performed up to 20 GHz, with the input sensitivity varying from 6 mV at l0 GHz to 16 mV at 20 GHz. To our knowledge, this is the first InP based integrated circuit including more than 70 DHBTs, and it achieves the highest sampling rate found on the mainland of China.
基金The subject is supported by Zhejiang Provincial Natural Science Foundation.
文摘A new explanation of quaternary Q gate expression in Post algebra is given in this paper by using transmission function theory proposed in [1] and the quaternary ECL Q gate circuit is de- signed.The SPICE2 simulation to this circuit has confirmed that it has desired logical function and is totally compatible with various quaternary ECL circuits proposed before.
