Systems and methods for auto gain control in Bi-CMOS digital...

Details Systems and methods for auto gain control in Bi-CMOS digital... Systems and methods for auto gain control in Bi-CMOS digital...

2006-04-18

2006-04-18

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S127000

Reexamination Certificate

active

07030790

ABSTRACT:
The accuracy of output power in a digital-to-analog converter (DAC) is critical in certain applications. When bi-CMOS technology is used to implement a DAC, a number of factors affect the gain accuracy of the DAC. The present invention provides a circuit architecture to reduce the variation in these factors to ensure the accuracy of the output power of a DAC. The architecture comprises a bandgap portion, replica circuit and a DAC. The bandgap portion of the architecture provides a constant voltage, while the replica circuit provide a correct current to drive the DAC.

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10-bit, 1000 Msps Digital-to-Analog Converter (DAC), Philips Semiconductors Product Specification No. TDA8776A, Jun. 4, 1996, pp 1-19.

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