Pre-emphasis drive circuit based on cascade pseudo-differential structure

Abstract

The invention discloses a pre-emphasis drive circuit based on a cascade pseudo-differential structure. The drive circuit comprises a biasing circuit, a first MOS transistor, a second MOS transistor, athird MOS transistor, a fourth MOS transistor, a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor, a tenth MOS transistor, an eleventh MOS transistor and a twelfth MOS transistor, wherein all the first MOS transistor, the second MOS transistor, the third MOS transistor, the seventh MOS transistor, the eighth MOS transistor and the ninth MOS transistor are P-type MOS transistors; all the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the tenth MOS transistor, the eleventh MOS transistor and thetwelfth MOS transistor are N-type MOS transistors. The drive circuit provided by the invention has the advantages that output flexibility is high on the basis of a simple circuit structure, differentpre-emphasis voltage drive signals can be output as needed, and different environment requirements are met.

Description

technical field [0001] The invention relates to a pre-emphasis driving circuit, in particular to a pre-emphasis driving circuit based on a cascode pseudo-differential structure. Background technique [0002] With the continuous improvement of network and communication data transmission rates, people's demand for bandwidth is increasing. However, traditional electrical interconnection has serious disadvantages such as dielectric loss and channel attenuation. Therefore, the improvement of the bandwidth is greatly limited. [0003] Optical interconnection uses light waves as a transmission method to transmit information carriers, and performs parallel transmission and processing of optical information. Optical interconnection technology has incomparable advantages in high-speed data transmission environment - small crosstalk, high density, fast speed, low power consumption, etc., and will gradually replace traditional electrical interconnection. Among them, photonic devices t...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned pre-emphasis driving circuits are all designed by pre-calculating the required voltage value requirements, so they are mainly limited to the output of a single pre-emphasis voltage value, and the complexity of FIR filter design limits multiple pre-emphasis voltages. The output of the value makes the pre-emphasis circuit lack of flexibility in voltage output, and cannot meet different environments well.

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