Abstract
This thesis describes neural stimulation and recording circuits based on time encoding. The pulse generation circuit implemented for neural stimulation allows for programmable and flexible stimulation using a time encoding scheme. Experimental results are presented for the pulse generation circuit and demonstrate that the pulse generation circuit consumes 142μW from a 5-V supply. An exponential-logarithmic analog-to-digital converter is designed to minimize large pre-amplification for neural signal recording. The ADC performs A/D conversion using a logarithmic-exponential model. This architecture successfully achieves area conservation and therefore promises a significant reduction in cost.