Mixed-signal circuitry and integrated circuit devices

Mixed-signal circuitry including:

• digital producing one or more first digital signals;
• analog circuitry having a plurality of inputs receiving respective second digital signals and producing one or more analog signals in dependence upon the received second digital signals;
• and
• signal control circuitry, interposed between said digital circuitry and said analog circuitry, comprising:
• a plurality of individual clocked circuits, each receiving one or more of said first digital signals and a first clock signal and deriving from each of the received first digital signals at least one corresponding second digital signal and applying the corresponding second digital signal to said analog-circuitry input at a time determined by the received first clock signal;
• and
• clock distribution circuitry including a plurality of clock buffer circuits receiving a basic timing signal, each of said plurality of clock buffer circuits deriving from the basic timing signal one of said first clock signals applied to one or more corresponding ones of said plurality of clocked circuits.

Mixed-signal circuitry comprising:

• digital circuitry producing one or more first digital signals;
• analog circuitry having a plurality of inputs receiving respective second digital signals and producing one or more analog signals in dependence upon the received second digital signals;
• and
• signal control circuitry, interposed between said digital circuitry and said analog circuitry, comprising:
• a plurality of individual clocked circuits, each receiving one or more of said first digital signals and a first clock signal and deriving from said one or more first digital signals at least one corresponding second digital signal applying the corresponding second digital signal to said analog-circuitry input at a time determined by the received first clock signal, and
• power supply decoupling circuitry dividing said plurality of clocked circuits into a plurality of units, each unit having at least one of said plurality of clocked circuits, said power supply decoupling circuitry decoupling respective power supplies of the plurality of units from one another.

An apparatus comprising:

• digital circuitry means for producing one or more first digital signals;
• analog circuitry means, having a plurality of inputs receiving respective second digital signals, for producing one or more analog signals dependent upon the received second digital signals;
• signal control circuitry means, connected to said digital circuitry means and said analog circuitry means, for deriving said second digital signals from said first digital signals and for controlling a timing of application of said second digital signals to said plurality of inputs;
• and
• a power supply means for supplying power independently to each of said digital circuitry means, said analog circuitry means, and said signal control circuitry means.

Mixed-signal circuitry comprising:

• digital circuitry means for producing one or more first digital signals;
• analog circuitry means, having a plurality of inputs receiving respective second digital signals, for producing one or more analog signals in dependence upon the received second digital signals;
• and
• signal control circuitry means, interposed between said digital circuitry means and said analog circuitry means, for comprising
• a plurality of individual clocked circuits, each receiving one or more of said first digital signals and a first clock signal and deriving from said one or more first digital signals at least one corresponding second digital signal and applying the corresponding second digital signal to said analog-circuitry input at a time determined by the received first clock signal, and
• a power supply decoupling means for dividing said plurality of clocked circuits into a plurality of units, each unit having at least one of said plurality of clocked circuits, and for decoupling respective power supplies of the plurality of units from one another.

A mixed-signal integrated circuit device comprising:

• digital circuitry;
• analog circuitry;
• and
• clock distribution circuitry distribution clock signals within the device, wherein power is supplied independently to each of said digital circuitry, said analog circuitry, and said clock distribution circuitry.

An apparatus comprising:

• digital circuitry producing one or more first digital signals;
• analog circuitry having a plurality of inputs receiving respective second digital signals, and producing one or more analog signals dependent upon the received second digital signals;
• and
• signal control circuitry comprising
• a plurality of clocked circuits each receiving a first clock signal, and
• clock distribution circuitry including a plurality of clock buffer circuits, wherein each of said plurality of clock buffer circuits derives, from a basic timing signal, one said first clock signal applied to one or more corresponding ones of said plurality of clocked circuits.

An apparatus comprising:

• digital circuitry producing one or more first digital signals;
• analog circuitry having a plurality of inputs receiving respective second digital signals, and producing one or more analog signals dependent upon the received second digital signals;
• and
• signal control circuitry comprising
• a plurality of clocked circuits individually receiving a clock signal, and
• a power supply circuit dividing said plurality of clocked circuits into a plurality of units, each of said plurality of units having at least one of said plurality of clocked circuits, and decoupling the respective power supplies of the said plurality of units from one another.