Current steering digital-to-analog converter

Details Current steering digital-to-analog converter Current steering digital-to-analog converter

2007-12-25

2007-12-25

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

11306256

ABSTRACT:
A current steering digital-to-analog converter (DAC) is provided. At least two lower-resolution DACs are used for converting a high-resolution digital signal. One of the two lower-resolution DACs is used for converting the most significant bits (MSB) of the high-resolution digital signal. The other of the two lower-resolution DACs is used for converting the least significant bits (LSB) of the high-resolution digital signal. By such arrangement, a device mismatch problem is avoided and the chance of variation occurrence during manufacturing process is reduced. The arrangement also simplifies the layout in the significantly scaled-down chip area.

REFERENCES:
patent: 6288660 (2001-09-01), Nisbet
patent: 6507304 (2003-01-01), Lorenz
patent: 6583744 (2003-06-01), Bright
patent: 6967609 (2005-11-01), Bicakci et al.
patent: 2001/0026236 (2001-10-01), Toda
patent: 2004/0183706 (2004-09-01), Brauns et al.

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