发明名称 |
DIGITAL-TO-ANALOG CONVERTER CIRCUIT USING CHARGE SUBTRACTION METHOD AND CHARGE TRANSFER INTERPOLATION METHOD |
摘要 |
A DAC circuit using a charge subtraction method and a change transfer interpolation method includes resistor cells configured to divide a voltage of data of total K bits (=upper M bits+lower N bits) by resistance dividers; a decoder group configured to receive digital data of the M bits and the N bits divided in the resistor cells, process the digital data by the unit of 2 bits, and output respective corresponding voltages; a capacitor group configured to receive the voltages outputted from the decoder group and realize charge charging by a charge subtraction method and charge transferring by a charge transfer interpolation method; and an operational amplifier having a first input terminal which receives a reference voltage and a second input terminal which receives an interpolation voltage corresponding to an amount of charges transferred from the capacitor group, and configured to generate an output voltage. |
申请公布号 |
US2011279298(A1) |
申请公布日期 |
2011.11.17 |
申请号 |
US201113100596 |
申请日期 |
2011.05.04 |
申请人 |
KIM JI-HUN;SON YEONG-JOON;NA JOON-HO;BAE JEONG-YEOL;LEE SANG-GUG;SILICON WORKS CO., LTD |
发明人 |
KIM JI-HUN;SON YEONG-JOON;NA JOON-HO;BAE JEONG-YEOL;LEE SANG-GUG |
分类号 |
H03M1/66 |
主分类号 |
H03M1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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