摘要:
The present invention is a high density integrated circuit analog signal recording and playback system. The recording and playback system is based upon an array storing analog signals. The array has rows and columns of non-volatile memory cells to store the signal information. Analog column read/write circuitry is used to both store the analog information and retrieve it on a real time basis, using interleaving of analog information on a plurality of sample/hold circuits prior to storage in the array to increase throughput.
摘要:
Zur Realisierung einer Abtast-Halte-Schaltungsanordnung für differenzielle Signale mit geringer Haltekapazität wird ein Verstärker angegeben, bei dem im Kollektorkreis und im Emitterkreis die gleichen Stromverhältnisse herrschen, indem die Basisströme über zusätzliche Transistoren abgezogen werden und somit in den Kollektor- und Emitterwiderständen die gleichen Ströme fließen und gleiche Spannungsverhältnisse herrschen, indem in den Kollektorkreis jeweils eine zusätzliche Diode geschaltet wird.
摘要:
Dispositif pour s'affranchir des perturbations engendrées par un ou plusieurs commutateurs de puissance sur un signal électrique donné, caractérisé en ce qu'il comprend : - un interrupteur électronique (I) interposé sur la ligne (E,S) de propagation du signal, - un générateur (G) d'une impulsion de durée programmée commandant le fonctionnement de cet interrupteur (I), et - un circuit à retard (R) recevant l'ordre de commutation du ou des commutateurs perturbateurs, pour déclencher le générateur d'impulsion (G) au moment où la commutation de puissance a lieu.
摘要:
A sample holding circuit applicable as an output circuit for CCD (charge coupled device) or other delay line. The sample holding circuit includes a sample holding stage (11, 12) and at least one amplifier circuit (14,15) connected to the input and/or output of the sample holding stage (11, 12). The amplifier circuit (14, 15) is arranged to amplify a signal at a gain substantially equal to 1 without introducing any DC level shift.
摘要:
A sample-and-hold circuit for sampling a time-varying signal comprises a main sample-and-hold subcircuit (44) extending between input and output terminals (42, 46) and an auxiliary sample-and-hold subcircuit (48) extending between the input terminal (42) and a portion of the main subcircuit. Each sample-and-hold subcircuit (44, 48) comprises an input buffer amplifier (52, 82), a diode-bridge switch (56, 84) responsive to a control signal and coupled to the input buffer amplifier, a charge-holding capacitor (76, 100) coupled to the switch, and an output buffer amplifier (78, 98) coupled to the capacitor. The output of the auxiliary output amplifier (98) is further coupled to the main switch and the output of the main output amplifier (78) is coupled to the output terminal (46). A generator (62) generates the control signal for controlling the switches (56, 84) such that the same part of the time-varying signal passing through the main and auxiliary subcircuits (44, 48) is sampled. The time-varying signal passing through the main subcircuit (44) is delayed such that the time-varying signals traveling through the main and auxiliary subcircuits reach the main switch at substantially the same time.
摘要:
A sample-hold circuit comprises a large number of sample-hold elements (2Am, ..., 2Am+5), and a mult-stage shift register (7A) for controlling sampling timings of the sample-hold elements, including a large number of stages corresponding to respective sample-hold elements, characterized in that each of stages (20, 20m, ..., 20m+5) of the multi-stage shift register includes an input gate (21, 21m, ..., 21m+5) for taking a signal shifted from the preceding stage thereinto, an output gate (22, 22m, ..., 22m+5) for shifting the signal taken in by the input gate to the succeeding stage, respective sampling timings of said sample-hold elements corresponding to respective stages being determined by signals taken in between the input and output gates through the input gates at the respective stages. Waveforms of output signals from respective stages for determining the sampling timing are not affected by interstage wiring capacity. Accordingly, where a multi-stage shift register is made up as a folded array, unevenness occurs in the interstage wiring capacity, but such an unevenness has no bad influence on the sampling timing.
摘要:
The circuit arrangement includes a low voltage cascode current mirror circuit arrangement having an input branch comprising first and second FETs (T1,T3) and an output branch comprising third and fourth FETs (T2,T4). In order to provide the correct bias potential of V t +2V on at the gate electrodes of the second and fourth FETs (T3,T4) a second output branch comprising two further FETs (T5,T6) and a further current mirror circuit comprising FETs (T7,T8) pass a current through the diode connected FET (T9) so that it produces the voltage V t +V on . If this current is equal to the input current then the diode connected FET (T9) is constructed to have a gate width to length ratio of one quarter of that of the cascode connected transistors (T3,T4). The current mirror circuit is incorporated into current scaling and current memory circuits for signal current manipulation.