Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2006-08-08
2006-08-08
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S155000
Reexamination Certificate
active
07088274
ABSTRACT:
An improved circuit is provided that buffers the output of a DAC while improving the bandwidth and linearity of the circuit. A DAC comprises an output signal of a switched DAC circuit coupled to an inverting node of an output buffer configured as a difference amplifier, while a non-inverting node of the difference amplifier is coupled to a fixed reference potential. As a result, the difference amplifier buffers the output of the switched DAC circuit while permitting the use of N-type input stages in the amplifier, which can enhance the bandwidth capability of the circuit.
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Analog Devices, inc., pp. 1-6, AD557, 1992, no month.
Brady W. James
Hoel Carlton H.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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