Multiple-output neuron MOS current mirror with bias circuit suitable for Digital-to-Analog converter

This paper proposes a multiple-output neuron MOS current mirror with bias circuit suitable for a 14-bit current-steering D/A converter. Area of the D/A converter is decreased by sharing a floating-gate of a neuron MOSFET. A novel bias circuit is needed for sharing the floating-gate. The multiple-output neuron MOS current mirror with bias circuit reduces the total gate area to 1/811 the multiple-output neuron MOS current mirror without bias circuit. The performance of the proposed circuit is evaluated by HSPICE simulation with On-Semiconductor 1.2μm CMOS device parameters. Simulation results show that the proposed circuit realizes saturation region in V out >; 0.2[V], the current copy accuracy is 99.99863%.