A Compact 3V, 70mW, 12-bit Video-Speed CMOS ADC

A 12-bit video speed pipelined switched capacitor analog-to-digitalconverter (ADC) has been implemented in a 0.5 µmstandard CMOS process. It operates from a single 2.6–;3.3Vsupply, dissipates 23mA (independent of supply voltage) at 20MSPS and occupies only 1.1mm 2. A 61dB SINAD (fin = 4.5 MHz) and an effective resolution bandwidthof 9 MHz is achieved.