Jinju Lee

A Multi-Channel Current-Mode CMOS Optical Receiver Array for Active Optical HDMI Cables

This paper introduces a four-channel optical receiver array implemented in a standard 1P4M 0.18μm CMOS technology for the applications of active optical HDMI cables. Each channel consists of a current-mirror transimpedance amplifier, a five-stage differential limiting amplifier, and an output buffer, demonstrating 81-dBΩ transimpedance gain, 1.8-GHz bandwidth even with 0.5-pF photodiode capacitance, −18.3-dBm optical sensitivity for 10−12 BER & 0.6-A/W responsivity, and 51.7-mW power dissipation from a single 1.8-V supply. The whole chip occupies the area of 1.35 × 2.46mm2 including pads. The measured eye-diagrams of the array confirms wide and clear eye-openings up to 4.0-Gb/s operations.

A low-power wideband transimpedance amplifier in 0.13µm CMOS

This paper presents a low-power wideband transimpedance amplifier (TIA) for the applications of multi-band wireless communication systems. Realized in a standard 0.13µm CMOS technology, the measured results of the TIA demonstrate the maximum gain of 16dB in the frequency range of 800MHz∼4.3GHz, the noise figure of < 5.88dB, the input-referred third order intercept point (IIP3) of −5.4dBm at 2.4GHz, and the power consumption of 12mW from a single 1.2V supply. The chip occupies the total area of 0.7×1.1mm2.

A 12mW 5GHz wideband low-noise amplifier in 0.13µm CMOS using noise cancellation

This paper presents a wideband low-noise amplifier (LNA) exploiting noise cancellation technique, which operates at 800MHz–5.7GHz for low-power multi-standard applications. Implemented in a 0.13µm CMOS technology, the measured results of the LNA demonstrate the maximum gain of 11.7dB in the frequency range of 811MHz∼5.7GHz, the noise figure of 2.58∼5.11dB within the bandwidth, the input-referred third order intercept point (IIP3) of 1.6dBm at 2.4GHz, and the power consumption of 12mW from a single 1.2V supply. The chip occupies the total area of 0.7×0.9mm2.