Differential pair arrangement

Details Differential pair arrangement Differential pair arrangement

1994-03-15

1996-05-07

Nguyen, Matthew V.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323312, 330288, 330257, G05F 316, H03F 304

Patent

active

055149502

ABSTRACT:
A differential pair arrangement is disclosed which includes between the poles of a DC supply source the series connection of two parallel first branches and a common second branch. Each first branch includes the series connection of a first impedance Q2, Q3, RL/ Q2', Q3', RL', a main path of a transistor Q1/ Q1'and a second impedance RE/RE', the control electrodes of transistors Q1/ Q1' constituting respective input terminals IN1/ IN2 of the arrangement. The second branch includes a first current source (CCS). The arrangement further includes two third branches between the DC supply source poles, each consisting of the series connection of a second current source ICS/ICS', a respective transistor main path and a resistive impedance means R11, S11, R12, S12/ R11', S11', R12', S12'. These third branches result in an increased DC current through the corresponding transistor, thereby increasing the linearity of the arrangement, whilst the DC current through the first and second impedances does not increase, thereby not increasing the needed supply voltage nor the offset voltage of the arrangement.

REFERENCES:
patent: 4480337 (1984-10-01), Graziadei et al.
patent: 4525663 (1985-06-01), Henry
patent: 4814724 (1989-03-01), Tanigawa
patent: 5099205 (1992-03-01), Lewyn
patent: 5373228 (1994-12-01), Holle
patent: 5374897 (1994-12-01), Moraveji
patent: 5404097 (1995-04-01), Barou
patent: 5424681 (1995-06-01), Yotsuyanagi
Patent Abstract of Japan vol. 7, No. 107 (E-174) (1252) May 11, 1983 & JP-A-58 027 407 (Tokyo Shibaura Denki K.K.) 18 Feb. 1983 *abstract*.
Patent Abstract of Japan, vol. 6, No. 28 (E-95) (906) 19 Feb. 1982 & JP-A-56.149 803 (Fujitsu K.K.) 19 Nov. 1981 *abstract*.
Analysis and Design of Analog Integrated Circuits by P. R. Gray and R. G. Meyer, J. Wiley & Sons, New York, 1977.

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