Pre-emphasis driving circuit based on cascode pseudo-differential structure

Abstract

The invention discloses a pre-emphasis driving circuit based on a cascode pseudo-differential structure, including a bias circuit, a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor, The sixth MOS tube, the seventh MOS tube, the eighth MOS tube, the ninth MOS tube, the tenth MOS tube, the eleventh MOS tube and the twelfth MOS tube, the first MOS tube, the second MOS tube, the third MOS tube The seventh MOS tube, the eighth MOS tube and the ninth MOS tube are all P-type MOS tubes, the fourth MOS tube, the fifth MOS tube, the sixth MOS tube, the tenth MOS tube, the eleventh MOS tube and the The twelve MOS tubes are all N-type MOS tubes; the advantage is that on the basis of a simple circuit structure, the output flexibility is high, and different pre-emphasis voltage drive signals can be output according to needs to meet different environmental requirements.

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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