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A new operational amplifier based on the conventional TFC op-amp structure is presented. A novel method is used to increase the dc-gain of the triple folded cascode op-amp. This method does not limit the bandwidth, output voltage swing range and the phase margin of the triple folded cascode op-amp.
This paper presents a high speed, high resolution column-parallel ADC with global digital error correction. Proposed A/D converter is suitable for using in high-frame-rate CMOS image sensors. This new method has more valuable than conventional ramp ADC from viewpoint of speed and resolution. A prototype 11-bit ADC is implemented in 0.25µm CMOS technology. Moreover, an overall SNR of 63.8dB can be...
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