摘要:
A pseudo-differential amplifier circuit 1 is constructed from two equivalent amplifiers 2 and 3 that amplify a pair of input signals without using a differential pair. This pseudo-differential amplifier circuit 1 is used in an arithmetic unit in each of the A-D converter circuits AD1 through ADm in a parallel pipeline A-D converter 10.
摘要:
The invention provides a method of analyzing a source current at a higher speed and an enhanced accuracy in a semiconductor integrated circuit including a digital circuit. The method to analyze a waveform of the source current, with consideration of re-distribution of charges throughout the digital circuit in the semiconductor integrated circuit, expressing the digital circuit with series of parasitic capacitors ΣC ch,↑ (nT) and ΣC ch,↓ (nT) to be charged and connected between the source and the ground lines. The capacitor series are calculated in time series based on the distribution of switching operations of the logic gates included in the digital circuit. An analysis model for determining the waveform of the source current in the digital circuit is obtained by connecting the parasitic capacitor series with a couple of respective parasitic impedances Z d and Z g of the source line and the ground line.
摘要:
Disclosed are a computing circuit capable of computing an absolute difference with high-speed analog computation, a computing apparatus capable of computing the sum of absolute differences, and a semiconductor computing circuit achievable with simple circuitry and suitable for use in such a computing circuit or apparatus. The computing circuit capable of computing the absolute difference comprises a large input selection circuit 1 which outputs either a first signal or a second signal whichever is larger, a small input selection circuit 2 which outputs either the first and second signals whichever signal is smaller, and a subtraction circuit 3 which subtracts the output of the small input selection circuit 2 from the output of the large input selection circuit 1. The subtraction circuit 3 comprises a capacitor 6, a first switch 4 provided between a first terminal of the capacitor 6 and the output of the large input selection circuit 1, a second switch 5 provided between the first terminal of the capacitor 6 and the output of the small input selection circuit 2, and a third switch 7 provided between a second terminal of the capacitor 6 and a terminal connected to a prescribed potential. The computing apparatus capable of computing the sum of absolute differences comprises a plurality of such computing circuits, and computes the sum of the outputs of the computing circuits by using a summing circuit.
摘要:
A ferroelectric non-volatile memory device comprising a MOS cell transistor (Q1), two ferroelectric capacitors (C A , C B ) each of which has one terminal connected to the gate electrode of the cell transistor (Q1) and has almost the same remanent polarization, and a selector transistor (Q2) connected to the other terminal of one ferroelectric capacitor C B , wherein data is stored by polarizing the ferroelectric thin films of the capacitors in opposite directions with respect to the gate electrode of the cell transistor (Q1).
摘要:
A ferroelectric non-volatile memory device comprising a MOS cell transistor (Q1), two ferroelectric capacitors (C A , C B ) each of which has one terminal connected to the gate electrode of the cell transistor (Q1) and has almost the same remanent polarization, and a selector transistor (Q2) connected to the other terminal of one ferroelectric capacitor C B , wherein data is stored by polarizing the ferroelectric thin films of the capacitors in opposite directions with respect to the gate electrode of the cell transistor (Q1).
摘要:
A production process standardization system (1) of a semiconductor device for standardizing design rules among companies and smoothening requests for semiconductor production and distribution and re-use of design assets among companies wherein standardized design rules of a semiconductor are commonly managed by a common database management server (21) and wherein a plurality of companies (61, 62, 63) acquire the standardized design rules via the Internet (30) and design the semiconductor device according to the commonly managed design rules, a method of the same, and a storage medium storing that method.
摘要:
A ferroelectric non-volatile memory device comprising a MOS cell transistor (Q1), two ferroelectric capacitors (C A , C B ) each of which has one terminal connected to the gate electrode of the cell transistor (Q1) and has almost the same remanent polarization, and a selector transistor (Q2) connected to the other terminal of one ferroelectric capacitor C B , wherein data is stored by polarizing the ferroelectric thin films of the capacitors in opposite directions with respect to the gate electrode of the cell transistor (Q1).
摘要:
A sampling and hold circuit that can suppress voltage variation at the input terminals, which are virtual grounds, of a differential amplifier, depending on the frequency of input signals. During sampling operation, a serial circuit composed of a capacitor C1, to which a positive-side input voltage ViP is applied, and an NMOS transistor Q4, which is always turned on, is connected to an input terminal INP of a differential amplifier circuit 2. A serial circuit having the same impedance as that serial circuit and composed of a capacitor C3, to which a negative-side input voltage ViM is applied, and an NMOS transistor Q9 is also connected to the input terminal INP. A serial circuit composed of a capacitor C2, to which a negative-side input voltage ViM is applied, and an NMOS transistor Q5, which is always turned on, is connected to the other input terminal INM of a differential amplifier circuit 2. A serial circuit having the same impedance as that serial circuit and composed of a capacitor C4, to which a positive-side input voltage ViP is applied, and an NMOS transistor Q10 is also connected to the input terminal INM.