Research Article
Analysis and Design of High-Energy-Efficiency Amplifiers for Delta-Sigma Modulators
Table 1
FIA structure and performance comparison between the improved amplifiers.
| Parameters | Structure | FIA [7] | Cascode FIA [9] | INVINV FIA [10] | This work |
| DC gain | Low | Medium | Medium | High | Output swing | Large | Medium | Large | Medium | In-band noise | Low | Low | Medium | Medium | In-band noise with a chopper | Low | Low | Medium | Low |
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