A small analog VLSI inner hair cell model

In this paper we present a simplified analog VLSI inner hair cell model, which models the main characteristics of the biological inner hair cell, i.e., I ) soil half-wave rectification, 2 ) low-pass filtering at IkHz, and 3) adaptation to sustained input. The main challenge lies in the creation of the long time constant associated with the lkHz low-pass filter and the adaptation. A modified current mirror structure has been used to create a nonlinear low-pass filter which has a cut-off frequency of lkHz or lower with reasonable component and bias values. Comparison of measurements of the biological inner hair cell and the circuit show a good agreement between the two.