Title :
The verification of the substrate mathematics model and optimization of the substrate noise canceling technique in mixed signal ICs
Author :
Cheng, Dongfang ; Yang, Wenrong ; Wang, Jiongming
Author_Institution :
Microelectron. R&D Center, Shanghai Univ., Shanghai, China
Abstract :
The substrate noise becomes more serious with the increasing frequency and decreasing process geometries. In this paper, a mathematics model of the substrate noise will be proposed. The current methods for solving the substrate noise will be analyzed using the model, and a new method is proposed based on the inverse relationship between the varying voltage of the power supply line and the one of ground line. In this method, there are two important units, which are high-pass filter and adder circuit. The noise is reduced by 26 dB, compared with triple-well techniques.
Keywords :
adders; high-pass filters; interference suppression; mixed analogue-digital integrated circuits; optimisation; adder circuit; ground line; high-pass filter; mixed signal IC; optimization verification; power supply line; substrate mathematics model; substrate noise canceling technique; triple-well techniques; Adders; Circuit noise; Filters; Frequency; Geometry; Mathematical model; Mathematics; Noise cancellation; Power supplies; Voltage; adder circuit; auto-compatibility; di/dt detector; substrate noise; triple-well;
Conference_Titel :
ASIC, 2009. ASICON '09. IEEE 8th International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-1-4244-3868-6
Electronic_ISBN :
978-1-4244-3870-9
DOI :
10.1109/ASICON.2009.5351218
