摘要:
The invention relates to an electronic circuit comprising differential signal input means, a combining stage, a discriminating stage and differential signal output means. The discriminating stage comprises four transistors (Q8, Q9, Q10, Q11) each having first electrodes (83, 93, 103, 113) and second electrodes (81, 91, 101, 111) and a respective gate electrode (82, 92, 102, 112). The first electrodes of said four transistors are connected to a common node. The combining stage is arranged to convert differential input signals into gate signals applied to the gate electrodes of some of said four transistors respectively.
摘要:
The invention relates to a flip-flop circuit assembly comprising at least four differential amplifiers (1, 2, 3, 4) which are interconnected in such a way that a flip-flop D is formed. According to said invention principle, the emitter nodes (E1, E2) of the differential amplifiers (1, 2, 3, 4) are switched by means of the pair of switches (S1, S2) with respect to a power potential and are controlled by a differential input clock signal applied to a control input (CN, CP). The inventive flip-flop operates at a particularly low power voltage (VCC) and is particularly suitable for designing frequency dividers and shift registers.
摘要:
The invention provides a logic circuit which has a sufficient load driving capacity even in its operation with a low power supply voltage and can operate at a high speed. In a next stage to a differential circuit (11) having an output stage for which an emitter followers (Q13, Q14) are used, a folding circuit (12) in which a pair of transistors (Q15, Q16) of a diode connection are used to raise the signal level of differential outputs of the differential circuit (11).
摘要:
A DC-coupled active pull-down ECL circuit ("LS-APD") has a pull-down drive that self adjusts to lead conditions. A current source (Q3) sinks emitter current from first (Q1) and second (Q2) bipolar transistors. The input signal (IN) is coupled to the base of the first transistor, whose collector signal is coupled to the base of a pull-up transistor (Qpu) whose emitter is the LS-APD output voltage node (OUT). The pull-up transistor is coupled between the upper rail (Vcc) and the second transistor's collector load resistor (R2). A pull-down transistor (Qpd) has its base coupled to the second transistor's collector, its collector coupled to the LS-APD output node, and its emitter coupled to a node receiving a regulated (Vreg) voltage. As load capacitance increases, the output voltage takes longer to drop sufficiently to turn off the pull-down transistor.
摘要:
Disclosed is a circuit for compensating variations in an ECL circuit (200). The compensation circuit (210) is coupled to the differential pair (Q1/Q2) and the output stage (Q3/Q4) and is operative to develop a compensating voltage drop in the differential pair so as to compensate the DC output voltage level against temperature variations.
摘要:
A new family of current mode logic (CML) gates (14) which, in one embodiment includes OR/NOR and AND/NAND gates, as well as more complex logic functions. The circuit uses a complementary signal to drive the gate of a feedback transistor (19) which has the effect of pseudo differential operation. Although it uses only single-ended inputs (A, B), because of this feedback aspect, the circuit has many of the advantages of a differential circuit such as low-voltage operation, higher immunity to noise, and less sensitivity to parasitic elements.
摘要:
Treiberschaltung zum Treiben einer zwischen einen Ausgangsanschluß (1) und ein Bezugspotential (5) geschalteten Last
mit einem ersten Transistor (2), dessen Kollektor an ein erstes Versorgungspotential (4) angeschlossen ist und dessen Emitter mit dem Ausgangsanschluß (1) verbunden ist, mit einem zweiten Transistor (3), dessen Kollektor mit dem Ausgangsanschluß (1) verbunden ist und dessen Emitter an das Bezugspotential (5) angeschlossen ist, mit einem emittergekoppelten Transistorpaar (6, 7), an dessen Basen ein symmetrisches Steuersignal (13, 14) angelegt ist, dessen einer Kollektor über einen ersten Widerstand (11) mit dem ersten Versorgungspotential (4) und dessen anderer Kollektor über einen zweiten Widerstand (12) mit dem Ausgangsanschluß (1) gekoppelt ist, mit einer steuerbaren Stromquelle (9, 10) zur Speisung des Transistorpaares (6, 7) und mit einer Steuereinrichtung (15, 16, 17) zum Steuern der Stromquelle (9, 10) proportional zu der zwischen erstem Versorgungspotential (4) und Bezugspotential (5) auftretenden Versorgungsspannung (Uv).