Patent ID: 7982649

Claim:
A device for the low-distortion conversion or amplification of signals, the device including a digital-to-analog converter with adjustable reference voltages, the digital-to-analog converter furthermore including: per each bit a group of four switches S 1 -S 4 , an inversely operated R-2R-R conductor network, a generator for the generation of clock-synchronous increasing and decreasing ramp voltages and per each bit a control logic which controls the switches S 1 -S 4 wherein the control logic through the switches S 1 -S 4 applies either Uref+, Uref−, URampUp or URampDown to a point of the resistor 2R such that the value of a bit of two successive clocks is evaluated wherein at a L/L sequence S 1 is closed, at a L/H sequence S 3 is closed, at a H/L sequence S 4 is closed, and at a H/H sequence S 2 is closed.