
Switched-Capacitor Data Converters
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the digital error correction module [11]. Thus, the most critical analog building block
in a two-step ADC is the front-end S&H (S&H1), which must be capable of sampling
with a high precision at a high clock rate. In [48], a simple and yet high-performance
integrated SC S&H appropriate for CMOS two-step ADCs was reported.
Pipelined ADCs
The pipelined (or n-step) ADC may be considered the generalization of the two-step
ADC. Figure 5.8 illustrates a conceptual block diagram of a 10-bit pipelined ADC.
As the schematic shows, the 10-bit pipelined ADC consists of an input S&H and
nine cascaded (or pipelined) ADC ...