摆率提升电路及运算放大器
By distributing bias current within different common-mode voltage ranges through a common-mode detection module and a slew rate enhancement current generation module, the problem of reduced slew rate in the slew rate enhancement circuit when the input common-mode voltage is close to the positive or negative power supply rail is solved, achieving a slew rate enhancement effect with small circuit area and low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV
- Filing Date
- 2026-04-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing slew rate enhancement circuits exhibit reduced slew rate when the input common-mode voltage approaches the positive or negative power rail, and their large circuit area leads to increased costs.
A common-mode detection module is used to detect the common-mode voltage, and the first and second slew rate boosting current generation modules distribute bias current in different common-mode voltage ranges to provide current for the P input pair and N input pair respectively, so as to maintain good operating conditions and constant slew rate when the common-mode voltage is close to the positive and negative power rails.
It achieves a constant slew rate within the range of the positive and negative power rails for common-mode voltage, reducing circuit area and lowering costs.
Smart Images
Figure CN122052718B_ABST