High-precision band-gap reference source with high power source rejection ratio
A technology of power supply rejection ratio and reference source, which is applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problem of insufficient accuracy of the bandgap reference source, and achieve the effect of stable output voltage and improved accuracy.
Inactive Publication Date: 2016-08-31
HUAZHONG UNIV OF SCI & TECH
View PDF8 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide a bandgap reference source with high precision and high power supply rejection ratio, aiming to solve the problem of insufficient precision of the current bandgap reference source
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022]The invention proposes a higher-precision bandgap reference source circuit, and further improves the precision of the circuit through a new compensation method. Such as figure 2 As shown, it includes a startup circuit 1 and a reference voltage generation module 2 (not shown in the figure), and the reference voltage generation module 2 includes a power supply rejection ratio enhancement circuit 21 , a reference voltage generation circuit 22 and a temperature compensation circuit 23 . The block diagram of the entire circuit is as follows figure 2 As shown, the startup circuit 1 is connected...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a high-precision band-gap reference source with a high power source rejection ratio. The high-precision band-gap reference source comprises a starting circuit and a reference voltage generating module; the reference voltage generating module comprises a power source rejection ratio intensifying circuit, a reference voltage generating circuit and a temperature compensating circuit, wherein a first input end of the power source rejection ratio intensifying circuit is connected with a first output end of the starting circuit, a first input end of the reference voltage generating circuit is connected to a second output end of the starting circuit, and a second input end of the reference voltage generating circuit is connected with a first output end of the power source rejection ratio intensifying circuit; a first input end of the temperature compensating circuit is connected to a second output end of the starting circuit, a second input end of the temperature compensating circuit is connected to an output end of the reference voltage generating circuit, a third input end of the temperature compensating circuit is connected to a second output end of the power source rejection ratio intensifying circuit, an output end of the temperature compensating circuit is connected to a second input end of the power source rejection ratio intensifying circuit, and a third output end of the power source rejection ratio intensifying circuit is used for outputting reference voltage.
Description
technical field [0001] The invention belongs to the technical field of integrated circuits, and more specifically relates to a bandgap reference source with high precision and high power supply rejection ratio. Background technique [0002] With the rapid development of system-on-chip (SOC), it is required to use CMOS technology to design analog integrated circuit units, but traditional reference voltages such as Zener reference source and buried Zener reference source are due to their high voltage, high power consumption and CMOS The manufacturing process is not compatible, so it is not suitable for the design of today's CMOS integrated circuits. The bandgap reference source is widely used in CMOS circuits due to its comprehensive consideration of temperature characteristics, power supply voltage suppression, power consumption, and process implementation. [0003] Common high precision high power supply rejection ratio bandgap reference source circuits such as figure 1 As...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G05F1/565
CPCG05F1/565
Inventor 郑朝霞刘政林玉冬刘谦袁意辉曾小刚吴旭峰
Owner HUAZHONG UNIV OF SCI & TECH