Low-power LVDS I/O interface for above 2Gb/s-per-pin operation

Abstract

Low Voltage Differential Signaling (LVDS) has become a popular choice for high-speed serial links to conquer the bandwidth bottleneck of intra-chip data transmission. This paper presents the design and the implementation of LVDS Input/Output (I/O) interface circuits in a standard 0.18 μm CMOS technology using thick gate oxide devices (3.3 V), fully compatible with LVDS standard. In the proposed transmitter, a novel Common-Mode FeedBack (CMFB)circuit is utilized to keep the common-mode output voltage stable over Process, supply Voltage and Temperature (PVT) variations. Because there are no area greedy resistors in the CMFB circuitry, the disadvantage of large die area in existing transmitter structures is avoided. To obtain sufficient gain, the receiver consists of three amplifying stages: a voltage amplifying stage, a transconductance amplifying stage, and a transimpedance amplifying stage. And to exclude inner nodes with high RC time constant, shunt-shunt negative feedback is introduced in the receiver. A novel active inductor shunt peaking structure is used in the receiver to fulfill the stringent requirements of high speed and wide Common-Mode Input Region (CMIR) without voltage gain, power dissipation and silicon area penalty. Simulation results show that data rates of 2 Gbps and 2.5 Gbps are achieved for the transmitter and receiver with power consumption of 13.2 mW and 8.3 mW respectively.

Study of Starting Performance of a Series Hybrid Aero Propulsion System

“…Notably, during the starting process, the rectifier includes two states: uncontrolled rectification and controlled rectification. For the former, the rectifier output voltage is proportional to the input voltage, which is proportional to the speed of the power turbine; for the latter, the rectifier can output DC power with adjustable voltage by controlling the conduction and shutdown of the switching tube [27]. The experiment primarily measures the speed of the gas turbine and power turbine (N G and N P ), the exhaust temperature of the gas turbine and power turbine outlet (T 4 and T 5 ), DC bus voltage, that is, rectifier output voltage (U DC ), the operating speed and power consumption of motor/propeller (N M and P M ), and the power consumption of load and rectifier (P L and P R ).…”

“…Notably, during the starting process, the rectifier includes two states: uncontrolled rectification and controlled rectification. For the former, the rectifier output voltage is proportional to the input voltage, which is proportional to the speed of the power turbine; for the latter, the rectifier can output DC power with adjustable voltage by controlling the conduction and shutdown of the switching tube [27].…”

Research Based on Improved CNN-SVM Fault Diagnosis of V2G Charging Pile

“…(1) The original 5 × 5 convolution kernel was replaced by a 3 × 3 size convolution kernel to further reduce the complexity of the model. ( 2) Referring to the model structure of Yolo, ResNet, and other models [24,25], we modified the number of convolution channels to 4/8/16. (3) The convolutional layer was increased to three layers, replacing the original double fully connected layer to further reduce the amount of parameter input.…”

Techno-economic evaluation of post-combustion carbon capture based on chemical absorption for the thermal cracking furnace in ethylene manufacturing

“…After the cracking gas from TLE is cooled to about 220-230°C using quench oil in the quencher, it enters the gasoline fractionator. When naphtha is used for cracking, the temperature at the bottom of the gasoline fractionator is 180-190°C [56]. The quench oil from the bottom of the gasoline fractionator is sent to the dilution steam system as a heat source to generate dilution steam.…”