发明名称 |
Voltage mode DAC with calibration circuit using current mode DAC and ROM lookup |
摘要 |
The invention is a novel scheme of calibrating a voltage-mode digital to analog converter using a current-mode digital to analog converter. A DAC system is comprised of a voltage-mode DAC with an R-2R architecture structure and includes a ROM lookup table where calibration codes associated with each of a plurality of input codes are stored. A reference current is scaled with the calibration codes to output a calibration current that induces adjustments in an output voltage to counteract non-linearities that may be induced by resistor mismatch. |
申请公布号 |
US8089380(B2) |
申请公布日期 |
2012.01.03 |
申请号 |
US20090603883 |
申请日期 |
2009.10.22 |
申请人 |
MCLACHLAN RODERICK;BLACKBURN SAMUEL;ANALOG DEVICES, INC. |
发明人 |
MCLACHLAN RODERICK;BLACKBURN SAMUEL |
分类号 |
H03M1/10 |
主分类号 |
H03M1/10 |
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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