Methods and apparatus to balance reference settling in...

Details Methods and apparatus to balance reference settling in... Methods and apparatus to balance reference settling in...

2008-07-22

2008-07-22

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S136000, C341S144000, C341S172000

Reexamination Certificate

active

11811718

ABSTRACT:
The linearity of switched-capacitor, pipeline digital to analog converters is improved by balancing the settling behavior of its pre-charge switches. In more detail, a switched capacitor DAC includes a number of substantially identical cells, one cell for each bit of an input digital word. A number of switch driver circuits are used to apply respective switch control signals to turn respective switches on and off. Advantageously, the switch control signals differ by an amount determined to equalize the gate-to-source voltage difference between different switches.

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