A high speed current output stage with Digital assistant circuit

Author

Luo, Ping ; Shen, Lei ; Zhen, Shaowei

Author_Institution

State key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Since & Technol. of China, Chengdu, China

fYear

2010

fDate

28-30 July 2010

Firstpage

510

Lastpage

513

Abstract

This paper introduces a novel current output stage with a Digital assistant circuit, which can obtain high speed performance. The output current stage in this paper is used in a switching driving circuit. The principle of this proposed circuit is different with the conventional structure. The added Digital assistant circuit includes a charge and discharge block, a keep block. Depended on simple digital control logic, the rise time and the fall time of the switching output current are shorten remarkably. The complete circuit was designed with the model parameters of a 0.35 um mixed-signal CMOS process and simulated with HSPICE. The simulation results show the rise time of the proposed output current stage is 20 ns and the regulating time for output current to be steady is only 100 ns under the maximum 90 mA output current condition.

Keywords

CMOS integrated circuits; driver circuits; high-speed integrated circuits; switching circuits; HSPICE; current 90 mA; digital assistant circuit; high speed current output stage; mixed-signal CMOS process; size 0.35 mum; switching driving circuit; time 100 ns; time 20 ns; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems (ICCCAS), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-8224-5

Type

conf

DOI

10.1109/ICCCAS.2010.5581944

Filename

5581944