CMOS voltage divider circuits

Details CMOS voltage divider circuits CMOS voltage divider circuits

1987-11-13

1989-07-11

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 307491, 307568, H03K 508, H02M 306, H02M 3135

Patent

active

048475181

ABSTRACT:
A CMOS fractional reference source or voltage divider circuit includes a string (chain) of CMOS pairs of transistors connected with their source-drain circuits in series and with ends of the string being connected across an input power (voltage) supply. The P-channel transistors are all matched to one another in a one to one ratio, the N-channel transistors are all similarly matched to one another. Output terminals are connected at the nodes between pairs of transistors. Accurate tracking of the voltage of the power supply is achieved by connecting each gate of the chain in a manner to insure the same source-to-gate voltage on each transistor of the pair. In the preferred form, the string comprises two pairs of CMOS transistors and the voltage appearing at the output terminal thereof is equal to one half of the voltage of the power supply.

REFERENCES:
patent: 3603811 (1971-09-01), Day et al.
patent: 3831041 (1974-08-01), Krambeck et al.
patent: 4663584 (1987-05-01), Okada et al.

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