Title: Digital analog converter using capacitor and operational amplifier
Application Number: 200610171885 Application Date: 2006.11.08
Publication Number: 1968022 Publication Date: 2007.05.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03M1/66;H03M3/02
Applicant(s) Name: Samsung Electronics Co., Ltd. Address:
Inventor(s) Name: Chang Il-kwon;Kang Min-gwang
Attorney & Agent: luxiao zhang lixiao shu
Abstract:
    There is provided a digital-to-analog converter using capacitors and an operational amplifier, which is capable of being highly integrated due to its small area and which is capable of rapidly performing a stable converting operation. The digital-to-analog converter includes a data input unit, a first conversion unit, a second conversion unit, and a signal output unit. When digital data is input to the data input unit, the data input unit is connected to the first conversion unit or the second conversion unit. The first conversion unit charges a first charging capacitor with a voltage corresponding to the input digital data and distributes the charged charges to a first distribution capacitor. The second conversion unit charges a second charging capacitor with the voltage corresponding to the input digital data and distributes the charged charges to a second distribution capacitor. The signal output unit outputs an analog data signal corresponding to the voltage across the first distribution capacitor or the voltage across the second distribution capacitor in response to a select control signal.
Time: 14
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