| 摘要 |
A multibit data converter has an output parallel unit element converter fed by a multibit signal, and noise shaping dynamic element matching (DEM) apparatus for selectively activating units in the converter. The DEM apparatus includes a plurality of noise shaping components. Each components has as an input one signal to the converter, and each includes a first integrator having as its input the input to the component, and a second integrator having as its input the output of the first integrator, and forms one or more component outputs. A signal in the second integrator is clipped. A vector quantizer orders the component outputs and activates converter elements according to the ordering.
|
