Bipolar multiplier with wide input voltage range using multitail

Details Bipolar multiplier with wide input voltage range using multitail Bipolar multiplier with wide input voltage range using multitail

1996-04-08

1997-09-16

Ngo, Chuong D.

Boots, shoes, and leggings

327356, G06G 716, G06F 7556

Patent

active

056687508

ABSTRACT:
A bipolar four-quadrant analog multiplier that is formed on a semiconductor integrated circuit device and is capable of low-voltage operation at a voltage as low as 1 V while the input voltage range providing a good linearity is enlarged. This multiplier contains a multitail cell made of a first transistor pair of first and second bipolar transistors, a second transistor pair of third and fourth bipolar transistors, and at least one bipolar transistor. The first and second transistors have output ends coupled together to form one of differential output ends of the multiplier. The third and fourth transistors have output ends coupled together to form the other of the differential output ends. The first to fifth transistors are driven by a common tail current. The first, second, third, fourth and fifth transistors are applied with (aV.sub.x +bV.sub.y), [(a-1)V.sub.x +(b-1)V.sub.y ], [(a-1)V.sub.x +bV.sub.y ], [aV.sub.x +(b-1)V.sub.y ], and [{a-(1/2}V.sub.x +{b-(1/2)}V.sub.y +V.sub.c ], respectively, where V.sub.x and V.sub.y are initial input signals to be multiplied, a and b are constants, and V.sub.c is a positive dc voltage.

REFERENCES:
patent: 5357149 (1994-10-01), Kimura
patent: 5438296 (1995-08-01), Kimura
patent: 5485119 (1996-01-01), Kimura
patent: 5521542 (1996-05-01), Kimura
patent: 5578965 (1996-11-01), Kimura
patent: 5581210 (1996-12-01), Kimura
patent: 5581211 (1996-12-01), Kimura
patent: 5583456 (1996-12-01), Kimura
K. Kimura, "Bipolar and MOS Four-Quadrant Analog Multipliers with the Same Transfer Curves of . . . Quadritail Cell", Technical Report of IEICE, CAS93-78, Nov. 1993, pp. 31-35.
K. Kimura, "A Unified Analysis of Four-Quadrant Analog Multipliers Consisting of Emitter and . . . Voltage", IEICE Trans. Electron., vol. E76-C, No. 5, May 1993, pp. 714-737.
K. Kimura, "A New Bipolar Multiplier Core", Proceedings of the Engineering Sciences at the 1994 Society Conference of IEICE (A-11), p. 11.
K. Kimura, "An MOS Four-Quadrant Analog Multiplier Based on the Multitail Technique . . . Core", IEEE Trans on Cir and Sys--I: Fund. Theory and Applns, vol. 42, No. 8, Aug. 1995, pp. 448-454.
K. Kimura, "A Bipolar Very Low-Voltage Multiplier Core Using a Quadritail Cell", IEICE Trans. Fundamentals, vol. E78-A, No. 5, May 1995, pp. 560-565 .

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