发明名称 |
2-PHASE GAIN CALIBRATION AND SCALING SCHEME FOR SWITCHED CAPACITOR SIGMA-DELTA MODULATOR |
摘要 |
A sigma-delta modulator may have a plurality of capacitor pairs, a plurality of switches to couple any pair of capacitors from the plurality of capacitor pairs selectively to an input signal or a reference signal, and a control unit operable to control sampling through the switches to perform a charge transfer in two phases wherein any pair of capacitors can be selected to be assigned to the input signal or the reference signal, and wherein after a plurality of charge transfers a gain error cancellation is performed by rotating the capacitor pairs cyclically such that after a rotation cycle, each capacitor pair has been assigned a first predetermined number of times to the input signal, and has also been assigned a second predetermined number of times to the reference signal. |
申请公布号 |
WO2011008928(A3) |
申请公布日期 |
2011.03.10 |
申请号 |
WO2010US42096 |
申请日期 |
2010.07.15 |
申请人 |
MICROCHIP TECHNOLOGY INCORPORATED;DEVAL, PHILIPPE;QUIQUEMPOIX, VINCENT |
发明人 |
DEVAL, PHILIPPE;QUIQUEMPOIX, VINCENT |
分类号 |
H03M3/00;H03M1/06 |
主分类号 |
H03M3/00 |
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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