Abstract
The parameter extraction of device models is critically important for circuit simulation. The device models in the existing parameter extraction software are physics-based analytical models, or embedded Simulation program with integrated circuit emphasis (SPICE) functions. The programming implementation of physics-based analytical models is tedious and error prone, while it is time consuming to run the device model evaluation for the device model parameter extraction software by calling the SPICE. We propose a novel modeling technique based on a neural network (NN) for the optimal extraction of device model parameters in this paper, and further integrate the NN model into device model parameter extraction software. The technique does not require developers to understand the device model, which enables faster and less error-prone parameter extraction software developing. Furthermore, the NN model improves the extraction speed compared with the embedded SPICE, which expedites the process of parameter extraction. The technique has been verified on the BSIM-SOI model with a multilayer perceptron (MLP) neural network. The training error of the NN model is 4.14%, and the testing error is 5.38%. Experimental results show that the trained NN model obtains an extraction error of less than 6%, and its extraction speed is thousands of times faster than SPICE in device model parameter extraction.
Highlights
In the process of device model parameter extraction, the model parameter values are substituted into the device model for calculation
A novel device modeling technique based on neural network (NN) for the optimal exIn this this paper, paper,aanovel noveldevice devicemodeling modeling technique based on
This technique does not require developers to manually implement. This technique technique does not require developers totomanually implement physics-based analytical. This does not require developers manually implement physics-based analytical models, which vastly accelerates the developing of parameter extraction software
Summary
In the process of device model parameter extraction, the model parameter values are substituted into the device model for calculation. The optimization engine will adjust the model parameter values and substitute them into the model calculation The device models in the existing parameter extraction software are manually implemented, physics-based analytical models, or embedded SPICE. The implementation of physics-based analytical models requires the developer to be skilled in device physics and have a deep understanding of the models. The NN model improves the extraction speed physics-based analytical model. We use the MLP neural network to build a device model for parameter extraction. The MLP neural network inputs network to build a device model for parameter extraction. The MLP neural network inputs include the voltages, device geometries, temperature, and model parameters.
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