We describe wavelength-routed switching technology for 25-Gbit/s optical packets using a tunable transmitter that monolithically integrates a parallel-ring-resonator tunable laser and an InGaAlAs electroabsorption modulator (EAM). The transmitter provided accurate wavelength tunability with 100-GHz spacing and small output power variation. A 25-Gbit/s burst-mode optical-packet data was encoded ...

The research of 60GHz CMOS transceivers has bloomed due to their capability of achieving low-cost multi-Gb/s short-range wireless communications [1]. Considering practical use of the 60GHz CMOS transceivers, longer operation lifetime with high output power is preferred to provide reliable products. Unfortunately, as indicated in [2], the output power capability of the transmitter will gradually...

A neuron-MOS transistor (νMOS) is applied to current-mode multi-valued logic (MVL) circuits. First, a novel low-voltage and low-power νMOS current mirror is presented. Then, a threshold detector and a quaternary T-gate using the proposed νMOS current mirrors are proposed. The minimum output voltage of the νMOS current mirror is decreased by VT (threshold voltage), compared with the conventional...

The implementation of currentfeedback op-amps (CFB op-amps) relies on the use of a semiconductor process with complementary device structures for class AB operation of the input and output stages. Thus, CMOS technology is an obvious candidate. However, commercial CFB opamps are all realized in bipolar processes. In this paper we identify some of the problems related to the application of CMOS t...

A low-power and small-area scan driver using depletion-mode amorphous-InGaZnO (a-IGZO) thin-film transistors (TFTs) is proposed for 10-inch quadruple extended graphics array (QXGA, 2048 × 1536) panels. The proposed scan driver is realised in a small area using 11 TFTs and improves power consumption by removing short circuit current. Measured results show that the power consumption of the propos...

A double sampled second order ΣΔ modulator with an analog look ahead (ALA) approach is presented. The proposed architecture provides an extra clock period to be used for the quantization. The feedforward path in both integrators allows the further reduction of the output voltage swing, relaxing also the slew-rate requirements of the op-amps. Moreover, the modulator enables the reduction of the ...

A very fast monolithic charge sensitive preamplifier using HF2CMOS technology featuring less than 45mW power dissipation for a 5V max imum output voltage swing, with a slew rate about 700Y/~csec for 150pF input capacitance (~ 7nsec rise time), has been realized . A front-end set up for the read out of more detectors and the shaping of the signal with a 20nsec RC-CR filter employing only monolit...

This paper proposes a shared-capacitor charge-sharing ROM (SCCS-ROM). The SCCS-ROM reduces the swing voltage using the charge-sharing technique of the charge-sharing ROM (CSROM) [4]. Although the CS-ROM needs three small capacitors per output, the SCCS-ROM shares the capacitors so that it needs only three capacitors. The SCCS-ROM implements the capacitors using dummy bit lines. This not only in...

A differentially excited symmetric inductor that enhances inductor quality ( ) factor on silicon RF ICs is presented. Compared with an equivalent single-ended configuration, experimental data demonstrate that the differential inductor offers a 50% greater factor and a broader range of operating frequencies. Predictions from full-wave simulations and a physics-based SPICE-compatible model are va...