Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2010-04-14
2011-10-04
Mai, Lam T (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C327S091000
Reexamination Certificate
active
08031097
ABSTRACT:
A multiplying digital-to-analog converter includes an operational amplifier (OP-amp) operated under a first power supply voltage and a second power supply voltage; an OP-amp input switch block coupled to a common mode voltage for selectively coupling the common mode voltage to input nodes of the OP-amp, wherein the common mode voltage is substantially equal to the first power supply voltage; a capacitor block coupled to the OP-amp input switch block; a sampling switch block coupled to the input signal for selectively coupling the input signal to the capacitor block; a reference voltage switch block coupled to the capacitor block for selectively coupling the reference signal to the capacitor block; and a feedback switch block coupled between the capacitor block and output nodes of the OP-amp.
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Bjornar Hernes, A 1.2V 220MS/s 10b Pipeline ADC Implemented in 0.13umDigital CMOS, Feb. 17, 2004.
Kang Tzung-Hung
Tu Wei-Hsuan
Hsu Winston
Mai Lam T
Margo Scott
Mediatek Inc.
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