Demystifying Switched Capacitor Circuits

Switched-Capacitor Data Converters

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quantizers except for the last stage, which uses a multibit quantizer), and multibit/

1-bit multistage modulators (all stages use 1-bit quantizers except for the fi r s t stage,

which uses a multibit quantizer). Each type of ∆Σ modulator has its own share of

advantages and disadvantages. Table 5.4 summarizes the advantages and disadvan-

tages for each type. Note that the term power in the table means the total power

consumption, which accounts for both analog and digital portions of the circuit.

DS Modulators with Single-Bit Quantization

Since the late 1980s, ∆Σ modulators have been primarily used for the high ...