A successive approximation analog-to-digital converter (SA-ADC) for biomedical application is presented. It is based on 0.18μm standard CMOS technology and operates at low supply voltage at IV. Boosted switch for sample-and-hold stage, split capacitor array for DAC, and clocked rail-to-rail comparator are used to achieve low-power consumption. The ADC has signal-to-noise-and-distortion ratio of 53dB for supply voltage of IV, at sampling rate of 100KS/s and power consumption of 8μW.
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