PATENT CLAIM ANALYSIS

Application Number: 16212234
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-08
Patent Classification: ["323", "280000"]

Abstract:
A band-gap reference circuit including a low drop-out (LDO) regulator and a reference circuit is disclosed. The LDO regulator outputs a regulating voltage which is provided to the reference circuit, and wherein the regulating voltage is maintained constant and powers the reference circuit such that the reference circuit outputs a band-gap reference voltage. According to the reference circuitry, the LDO regulator can output a stable voltage such that the regulating voltage can be maintained constant, therefore, causing the band-gap reference voltage output from the reference circuit to be maintained constant, hence improving the reliability of the band-gap reference voltage.

Claim (Index 11):
A band-gap reference circuit, comprising a first operational amplifier, a second operational amplifier, first to third transistors and a voltage feedback circuit, wherein:\n each of the first to third transistors is implemented as a P-channel field-effect transistor; a source of the first transistor is coupled to a supply voltage and a drain of the first transistor is connected to the voltage feedback circuit and coupled to a regulating voltage; the first operational amplifier outputs a first gate control voltage to a gate of the first transistor to switch on or switch off the first transistor; the voltage feedback circuit provides a feedback voltage which is positively correlated with the first gate control voltage to a non-inverting input of the first operational amplifier; a source of the second transistor and a source of the third transistor are connected to the regulating voltage; a gate of the second transistor and a gate of the third transistor are connected to each other and further connected to an output of the second operational amplifier; a drain of the second transistor is connected to an inverting input of the second operational amplifier, and a drain of the third transistor is connected to a non-inverting input of the second operational amplifier; and a band-gap reference voltage is output from a node between the drain of the third transistor and the non-inverting input of the second operational amplifier, the band-gap reference voltage being applied to an inverting input of the first operational amplifier.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 98.0
- Lexical Diversity: 2.47727
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16210936', '12407390', '12195260', '14566113', '15387678']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7010321830702221
- 35 USC 102 Novelty (BERT): 0.4997973843196445
- Combined Prediction Score: 0.6809087031951644
- Mean Citation Score: 238.1664
- Max Citation Score: 265.70877
- Similarity Product: 207.1061779623843

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test