Electronic circuit apparatus

Details Electronic circuit apparatus Electronic circuit apparatus

2006-12-26

2006-12-26

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S160000

Reexamination Certificate

active

07154427

ABSTRACT:
A circuit including analog circuits processes an analog input signal. Further, the circuit including the analog circuits sends a coefficient to a coefficient detection/control circuit. The coefficient is indicative of a predetermined property of each of the analog circuits provided in the circuit. The coefficient detection/control circuit processes and detects the coefficient as a signal, with the result that the property of the analog circuit is detected. Then, the coefficient detection/control circuit sends a control signal to the circuit including the analog circuits. The control signal is generated according to a result of the detection of the coefficient. In accordance with the control signal, the coefficient detection/control circuit adjusts an operation state of the analog circuit so as to control an operation of the circuit including the analog circuits. The coefficient is sent from an external output terminal to outside. By monitoring the coefficient thus sent, circuit quality judgment is carried out.

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Chuang et al., “A Digitally Self-Calibrating 14-bit 10-MHz CMOS Pipelined A/D Converter”, IEEE Journal of Solid-State Circuits, vol. 37, No. 6, (2002), pp. 674-683, “no month”.

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