Driving voltage generator and digital to analog converter

摘要

A digital to analog converter is disclosed. The digital to analog converter includes a voltage selector, M voltage transmitting switches and a selecting signal decoder. The voltage selector receives N first voltages among a plurality of analog input voltages, and receives a plurality of digital selecting signals. The voltage selector selects at most one of the first voltages for providing to an output terminal. One terminals of the voltage transmitting switches receives M second voltages among the input voltages respectively, and the voltage transmitting switches are turned on or off according to M transmitting enable signals respectively. The selecting signal decoder generates the transmitting enable signals according to the selecting signals. Wherein, M and N are positive integers.

主权项

1. A digital to analog converter, comprising:
a voltage selector, receiving N first voltages among a plurality of input voltages of an analog format, and the voltage selector receiving a plurality of selecting signals of a digital format, wherein the voltage selector selects at most one of the first voltages for providing to an output terminal according to the selecting signals; M voltage transmitting switches, terminals of the voltage transmitting switches respectively receiving M second voltages different from the first voltages among the input voltages, and other terminals of the voltage transmitting switches being commonly coupled to the output terminal, wherein the voltage transmitting switches are respectively turned on or turned off according to M transmitting enable signals; and a selecting signal decoder, coupled to the voltage transmitting switches, and generating the transmitting enable signals according to the selecting signals, wherein M and N are positive integers.