learning_curve
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View attachment BGAP_patent_architecture.pdf
Hello all,
I was having some problems understanding what M1 and RB are used for in the attached bandgap schematic.
I understand the rest of the circuitry.
In a typical bandgap circuit, the output of the opamp goes to a current mirror, and Vbg is taken at the output (Drain) of the current mirror.
In this patent, the output of opamp is driving a CS transistor whose load is RB, I do not understand how this circuit works.
Can anybody help me understand this.
Hello all,
I was having some problems understanding what M1 and RB are used for in the attached bandgap schematic.
I understand the rest of the circuitry.
In a typical bandgap circuit, the output of the opamp goes to a current mirror, and Vbg is taken at the output (Drain) of the current mirror.
In this patent, the output of opamp is driving a CS transistor whose load is RB, I do not understand how this circuit works.
Can anybody help me understand this.