Cross-coupled charge transfer sense amplifier circuits

Details Cross-coupled charge transfer sense amplifier circuits Cross-coupled charge transfer sense amplifier circuits

1976-02-09

1977-08-02

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307238, 307279, 307DIG3, 307DIG4, 340173CA, H03K 520, H03K 518, G11C 1140, H03K 3353

Patent

active

040398617

ABSTRACT:
Sense amplifiers employing charge-transfer techniques and cross-coupled devices for use with memory cell arrays or as comparators, polarity sensors and differential amplifiers are described which include a unique preamplifier circuit having cross-coupled actuable devices and which provides a cross-coupled charge-transfer feature. The sense amplifier also includes actuable devices which provide further amplification. The preamplifier circuit includes two precharge actuable devices which have their gate electrode connected to the phase 1 line and which have their source electrode connected through separate capacitors to the phase 2 line. The terminals of the two preamplifier charge-transfer devices which are cross-coupled are also connected at the aforesaid circuit nodes and to the bit/sense lines and to the further amplification devices. The disclosure describes two embodiments of a preamplifier circuit, each of which is shown in combination with a plurality of different further amplification circuits.

REFERENCES:
patent: 3774176 (1973-11-01), Stein et al.
patent: 3838295 (1974-09-01), Lindell
patent: 3882326 (1975-05-01), Kruggel
patent: 3949381 (1976-04-01), Dennard et al.
Furman et al, "Sense Latch Circuit for Memory Cells"; IBM Tech. Discl. Bull.; vol. 16, No. 9, pp. 2792-2793; Feb. 1974.
Spampinato, "Differential Sense Amplifier"; IBM Tech. Discl. Bull.; vol. 17, No. 6, pp. 1797-1798; Nov. 1974.
Jacobson et al, "Memory Bit Driver"; IBM Tech. Discl. Bull.; vol. 15, No. 6, pp. 1734-1735; Nov. 1972.

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