Analog integrated circuit

Details Analog integrated circuit Analog integrated circuit

1985-04-08

1987-08-25

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, 330306, 330307, 357 51, H03F 345, H01L 2702

Patent

active

046895795

ABSTRACT:
A high-density analog integrated circuit having built-in resistor elements formed simultaneously with the formation of the base of transistor is disclosed in which a high-resistance element is formed of an ion-implanted resistor, a low-resistance element is formed of a base-diffused resistor, and a pair of high-resistance elements are connected in such a manner that a difference between a signal current flowing through one of the high-resistance elements and another signal current flowing through the other high-resistance element is outputted, and in which an ion-implanted resistor having a high resistance and a thin film capacitor having a small capacitance make up a built-in time constant circuit, which makes it possible to integrate on one semiconductor chip circuits such as a filter circuit for video signal and an input bias circuit.

REFERENCES:
patent: 3959040 (1976-05-01), Robertson
patent: 4001869 (1977-01-01), Brown
patent: 4253107 (1981-02-01), Macdougall
Kelson et al, IEEE J. of Solid State Circuits, vol. SC 8, No. 6, Dec. 1973, pp. 396-403.
Chanclou et al, IBM Tech. Discl. Bulletin, vol. 22, No. 4, Sep. 1979, pp. 1501-1502.
Marcus, "Sourcebook of Electronic Circuits", McGraw-Hill, N.Y., 1968, p. 196, bottom figure (from Electronics, 39:4, pp. 103-109) showing 702 differential amplifier.
National Semiconductor Linear Databook, 1977, (National Semiconductor, Santa Clara, Calif.), pp. 10-81 and 10-85, LM 733, LM 746.

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