Two-stage fully-differential low-noise low-offset chopping operational amplifier
An operational amplifier and low-noise technology, which is applied in the field of two-stage fully differential low-noise and low-offset chopper operational amplifiers, can solve the problems of switching noise residual, complex circuit structure, and low chopping frequency, etc., and achieve low offset voltage and low noise , expand the output range, increase the effect of the bandwidth range
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0022] see figure 2 , The two-stage fully differential low-noise low-offset chopper operational amplifier of the embodiment of the present invention includes three choppers S1, S2, S3 and a two-stage folded cascode operational amplifier. see image 3 , the choppers S1, S2, S3 are composed of four NMOS transistors M1, M1b, M2, M2b controlled by two-way non-overlapping clocks. The horizontal NMOS transistors M1, M2 and the vertical NMOS transistors M1b, M2b are turned on alternately, similar to Based on the function of the multiplier, the clock signal, that is, the chopping signal, is multiplied by the input signal to complete the function of modulating the input signal to the frequency of the chopping signal.
[0023] The chopper S1 first m...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap