PATENT CLAIM ANALYSIS

Application Number: 15995189
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["323", "313000"]

Abstract:
A current reference circuit and a semiconductor IC including the current reference circuit, the current reference circuit including a proportional to absolute temperature (PTAT) current generator configured to generate, in an output branch, a first current proportional to a temperature; and a current subtractor configured to generate a reference current by subtracting a second current generated based on a current flowing in an internal branch of the PTAT current generator, from the first current flowing in the output branch. The second current is set to have a same temperature-based change characteristic as the first current and a level different from a level of the first current.

Claim (Index 1):
A current reference circuit comprising:\n a current generator including an amplifier, a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor; and a current subtractor including a sixth transistor and a seventh transistor, wherein a first input terminal of the amplifier is connected to a first node that is connected to the first transistor, a second input terminal of the amplifier is connected to a second node that is connected to the second transistor, an output terminal of the amplifier is connected to a third node that is connected to a gate of the first transistor and a gate of the second transistor, the amplifier amplifies a voltage difference between the first node and the second node, and supplies an output voltage to the third node, the fourth transistor is connected to a resistor that is connected to the first node, the fifth transistor is connected to the second node and to the sixth transistor, the first transistor, the second transistor and the third transistor form a first current mirror circuit and are controlled by the output voltage of the amplifier, a first current is applied to the current subtractor through the third transistor that is connected to the third node, the first current being proportional to a temperature, the current subtractor generates a second current that flows through the sixth transistor based on a third current that flows through the second transistor, and generates a reference current by subtracting the second current from the first current, and the reference current that flows through the seventh transistor is insensitive to the temperature.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 94.0
- Lexical Diversity: 2.3
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15236502', '14518246', '13913082', '15870252', '15194438']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7375718281881292
- 35 USC 102 Novelty (BERT): 0.541883934982145
- Combined Prediction Score: 0.7180030388675307
- Mean Citation Score: 279.34209
- Max Citation Score: 412.44257000000016
- Similarity Product: 327.6452038493622

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

Dataset: test