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Method and apparatus for use in switched capacitor systems

  • US 6,917,321 B1
  • Filed: 05/21/2000
  • Issued: 07/12/2005
  • Est. Priority Date: 05/21/2000
  • Status: Expired due to Term
First Claim
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1. A DAC comprising:

  • a switched capacitor network that receives a multi-bit digital signal, the switched capacitor network having a plurality of sub DACs that each receive an associated bit of the multi-bit digital signal, each of the plurality of sub DACs having an associated capacitance that receives an associated amount of charge in response to the associated bit, wherein the associated amount of charge for each of the plurality of sub DACs is in direct proportion to a weight of the bit, the DAC having a charge sharing operating state in which at least two of the plurality of sub DACs share charge with one another, and having an operating state, initiated subsequent to the charge sharing operating state, in which the switched capacitor network outputs at least one analog signal indicative of a sum of values of each bit in the multi-bit signal.

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