Current switching digital-to-analog converter with hybrid current switching circuit having low-memory effect

摘要

In one embodiment of the invention, a digital to analog convertor (DAC) is disclosed for converting a digital input signal into an analog output signal. The DAC includes a switch controller coupled to a digital input signal; a bias voltage generator coupled to a first terminal of an analog voltage power supply; and a switched current source array coupled to the switch controller and the bias voltage generator. The bias voltage generator generates a bias voltage. The switch controller generates a plurality of digital enable signals. The switched current source array includes a plurality of hybrid switched current cells coupled to the switch controller and the bias voltage generator. The plurality of hybrid switched current cells are coupled together at an analog output terminal to sum unit currents together, if any, and form the analog output signal in response to the digital input signal.