Abstract: A voltage-level convertor including a switch and a capacitor which receives an input signal of a first voltage range and generates a level-converted signal of a second voltage range. The switch operates in a low voltage level, and hence, the switch can be implemented as a thin oxide device that responds quickly to the input signal. The capacitor is coupled between the switch and an output node. The capacitor is charged to a predetermined voltage. In response to receiving the output from the switch, an output signal with a converted voltage level is generated from the conductor of the capacitor connected to the output node.

Abstract: A synchronizing circuit compatible with a quad switching scheme in a digital-to-analog converter (DAC) to synchronize turning on or off of switches for steering current to a differential output. The synchronizing circuit receives signals from a decoder and synchronizes control signals to the switches by a clock signal. In one embodiment, the synchronizing circuit includes a predictor circuit and a latch circuit. The latch circuit may include four sets of cross-coupled inverters where a set of cross-coupled inverters are activated at a time. By using the synchronizing circuit in conjunction with the quad switching scheme, linearity of analog output from the DAC can be improved and data dependent noise in the analog output can be removed or reduced.

Abstract: A synchronizing circuit compatible with a quad switching scheme in a digital-to-analog converter (DAC) to synchronize turning on or off of switches for steering current to a differential output. The synchronizing circuit receives signals from a decoder and synchronizes control signals to the switches by a clock signal. In one embodiment, the synchronizing circuit includes a predictor circuit and a latch circuit. The latch circuit may include four sets of cross-coupled inverters where a set of cross-coupled inverters are activated at a time. By using the synchronizing circuit in conjunction with the quad switching scheme, linearity of analog output from the DAC can be improved and data dependent noise in the analog output can be removed or reduced.

Abstract: A voltage-level convertor including a switch and a capacitor which receives an input signal of a first voltage range and generates a level-converted signal of a second voltage range. The switch operates in a low voltage level, and hence, the switch can be implemented as a thin oxide device that responds quickly to the input signal. The capacitor is coupled between the switch and an output node. The capacitor is charged to a predetermined voltage. In response to receiving the output from the switch, an output signal with a converted voltage level is generated from the conductor of the capacitor connected to the output node.