Sure chip
First Claim
1. A CMOS monolithic circuit comprising:
- an analog subsystem including analog receiving means for receiving analog signals;
a digital subsystem including digital receiving means for receiving digital signals;
producing means interconnected with said analog receiving means and said digital receiving means for producing an output signal responsive to said analog subsystem or said digital subsystem; and
means for resetting said digital subsystem responsive to said analog subsystem and said digital subsystem.
2 Assignments
0 Petitions
Accused Products
Abstract
A hybrid monolithic IC that is standardized for controlling various types of electrical equipment, such as circuit breakers, motor controllers and the like. The IC is a hybrid monolithic IC, fabricated in CMOS technology. The shortcomings of utilizing CMOS technology for linear or analog circuitry is overcome by the implementation of the IC to provide a hybrid monolithic IC that is relatively less expensive than using multiple IC'"'"'s or a single IC fabricated from biCMOS technology. Also, by utilizing a single IC, such control and monitoring circuitry can be located in existing electrical equipment. The IC includes an on-board microprocessor, an A/D subsystem and various input/output devices which make it adaptable for use in various types of electrical equipment. In order to improve the resolution of the A/D subsystem, circuitry is provided, which includes current and voltage ranging amplifiers for ranging analog input voltage and current signals and compensating internal offsets, in such amplifiers, inherent in CMOS linear circuits which can affect the accuracy of the least significant bit. The ranging circuitry is controlled either automatically or manually to provide additional resolution of the A/D subsystem.
93 Citations
14 Claims
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1. A CMOS monolithic circuit comprising:
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an analog subsystem including analog receiving means for receiving analog signals; a digital subsystem including digital receiving means for receiving digital signals; producing means interconnected with said analog receiving means and said digital receiving means for producing an output signal responsive to said analog subsystem or said digital subsystem; and means for resetting said digital subsystem responsive to said analog subsystem and said digital subsystem. - View Dependent Claims (2, 3, 4, 5)
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6. A CMOS monolithic circuit comprising:
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an analog subsystem including analog receiving means for receiving differential input signals and producing an output signal as a predetermined function of said input signals and bias currents internally generated by said receiving analog means which control an input offset voltage to said analog receiving means; a digital subsystem including digital receiving means for receiving digital signals; producing means interconnected with said analog receiving means and said digital receiving means for producing an output signal responsive to said analog or digital subsystems; and means for controlling said bias currents. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A CMOS monolithic integrated circuit comprising:
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securing means for securing digital input signals; receiving means for receiving analog signals; producing means interconnected with said securing means and said receiving means for producing digital output signals as a predetermined function of said analog signals or said digital signals; and disabling means for disabling said producing means as a predetermined function of said receiving means.
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Specification