DISCRETE TIME OPERATIONAL TRANSCONDUCTANCE AMPLIFIER FOR SWITCHED CAPACITOR CIRCUITS
摘要
A discrete-time operational transconductance amplifier (OTA) with large gain and large output signal swing is described. In an exemplary design, the discrete-time OTA includes a clocked comparator and an output circuit. The clocked comparator receives an input voltage and provides a digital comparator output. The output circuit receives the digital comparator output and provides current pulses. The output circuit detects for changes in the sign of the input voltage based on the digital comparator output and reduces the amplitude of the current pulses when a change in the sign of the input voltage is detected. The output circuit also generates the current pulses to have a polarity that is opposite of the polarity of the input voltage. The discrete-time OTA may be used for switched-capacitor circuits and other applications.
申请公布号
WO2011119632(A2)
申请公布日期
2011.09.29
申请号
WO2011US29464
申请日期
2011.03.22
申请人
QUALCOMM INCORPORATED;YAMAMOTO, KENTARO;MATHE, LENNART