Analog-to-digital converter and communication device and...

Details Analog-to-digital converter and communication device and... Analog-to-digital converter and communication device and...

2008-11-13

2010-11-30

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S118000, C341S119000, C341S121000, C341S151000, C455S126000, C455S127200, C455S232100, C455S246100

Reexamination Certificate

active

07843369

ABSTRACT:
In a wireless transmitter and receiver, a background calibration type analog-to-digital converter generally occupies a large area because of the phase compensating capacity of an op-amp included in a reference analog-to-digital conversion unit. Further, the calibration type analog-to-digital converter generally requires a sample and hold circuit to exclude influence of parasitic capacitance of wirings, thereby increasing power consumption. Digital calibration is performed by using, as a signal for calibration, an input signal of a digital-to-analog converter in a transmitter circuit of the wireless transmitter and receiver and inputting an output signal from the digital-to-analog converter to the analog-to-digital converter in the receiver circuit.

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