| Autor: |
Su Li, Qiu Yulin |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
2005 IEEE Conference on Electron Devices and Solid-State Circuits. |
| DOI: |
10.1109/edssc.2005.1635302 |
| Popis: |
A single stage fully differential operational amplifier was designed in SMIC 0.25um mix-signal CMOS technology with 2.5V power supply. The designed op amp utilizes gain-boosting technique. The main op amp is a fully differential folded-cascode op amp with switched-capacitor CMFB. Two fully differential folded-cascode op amps with continuous-time CMFBs are used as auxiliary op amps to increase the open-loop gain of the main op amp. In addition, a simulation-based optimization method for the high-speed design of gain-boosted op amp was also presented. The simulation results show that the designed op amp achieves a dc gain of 102dB with a unity-gain frequency of 822 MHz. With the high-speed optimization, the 0.0488% settling time is 3.5ns. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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