Accurate global reference voltage distribution system with local reference voltages referred to local ground and locally supplied voltage

摘要

A system and method for accurately distributing a master reference voltage to a plurality of local circuits within a system. A central master reference voltage is distributed to a plurality of local circuits as a difference in the voltage of a pair of conductors oriented substantially spatially parallel. Local reference voltages are generated based on the master reference voltage and a local voltage source.

主权项

1. A system for providing a local reference voltage, the system comprising:
(a) a first master reference voltage line; (b) a second master reference voltage line oriented spatially parallel to said first master reference voltage line; (c) a single central master differential reference voltage source operationally connected to said first master reference voltage line and operationally connected to said second master reference voltage line, driven by a power supply terminal, and configured to provide a differential reference voltage; (d) a local voltage source supply configured to provide a local voltage; and (e) a local reference voltage generator operationally connected to said first master reference voltage line, operationally connected to said second master reference voltage line, driven by a first local power supply, and configured to generate a local reference voltage referred to said local voltage and substantially proportional to said differential reference voltage; wherein said single central master differential reference voltage source is further configured to distribute accurately said differential reference voltage using said first master reference voltage line with said second master reference voltage line for spatially parallel differential distribution, and wherein at least one of the supplies is different from at least one other of the supplies.