Abstract: A non-linear digital-to-analog converter is disclosed, which realizes non-linear output with overlapped resistor string. The non-linear digital-to-analog converter includes a first reference voltage select switching portion for selectively outputting first and second reference voltages Vh1 and Vc1 from externally applied reference voltages Vref[1, . . . 2N/2] and third and fourth reference voltages Vh2 and Vc2 from externally applied reference voltages Vref[0, . . . 2N/2−1] if N bit digital value is input, a resistor string block for outputting Vh[0, . . . 2N/2−1] number of level voltages, Vc[0, . . . 2N/2−1] number of level voltages, and V1[0, . . . 2N/2−1] number of level voltages from any one of the reference voltages Vh1 and Vc1 and any one of the reference voltages Vh2 and Vc2, a second reference voltage select switching portion for outputting a first analog conversion voltage V1 from the Vh[0, . . .

Abstract: A CMOS (Complementary Metal Oxide Semiconductor) digital level shift circuit converts a first source voltage which ranges from Vcc to the ground, into a second source voltage which ranges from Vdd to the ground. The circuit includes an inverter and a latch circuit. The latch circuit includes a latch unit and a voltage distributor having a plurality of PMOS and NMOS transistors. The plurality of MOS transistors are serially connected in the voltage distributor, whereby the second source voltage which is higher than the channel breakdown voltages of the respective MOS transistors, is externally output.