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A 1.2 V 12-bit 150 MS/s pipelined ADC with low-gain op-amps (DC gain ≈15 dB) is fabricated in a 65-nm CMOS process. The proposed 5-transistor single stage op-amp enables simple analog circuit to achieve low power and high speed. Digital background calibration technique is exploited to compensate the inter-stage gain error, capacitor mismatch and(More)
This paper presents an improved DC-offset cancellation (DCOC) circuit for programmable-gain amplifier (PGA) in power line communication. It is a speed-enhanced and low-noisy method by using current-mode feedback. The output DC-offset can be reduced from several hundred millivolts to less than 5mV over 64 dB gain range. Furthermore, this proposed technique(More)
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