Abstract:
The present invention describes a bias potential distribution system which provides bias potentials to MOS devices while ensuring the devices' operating conditions remain constant over temperature, process, and power supply fluctuations. Further, bias potentials are generated at one main location within the logic circuit and then distributed throughout the logic circuit to all of the MOS devices or to bias voltage conversion circuits.
Abstract:
An ECL-to-CMOS level translator and BiCMOS buffer are described. The current supplied from the first input PMOS transistor (P1) is the input current to a current mirror comprising the first and second NMOS transistors (N1 and N2). The current mirror controls the current sourcing and sinking capability of the translator. Third and fourth NMOS transistors (N3 and N4) are coupled to the first and second NMOS transistors in the current mirror and function to vary the source-to-body voltage of the first and second NMOS transistors and consequently their gain which results in increased current drive and sinking capability. The BiCMOS differential buffer of the present invention provides a differential output signal on first and second output nodes (115 and 215). It is comprised of first and second cross-coupled buffers (100B and 200B). Cross-coupling the buffers results in improved high-to-low transition times.
Abstract:
Un transistor bipolaire à jonctions (TBJ) à effet Kirk supprimé comprend une région collectrice (11) de type n légèrement dopée formée sur une couche n+ (12) plus fortement dopée. Directement sur le collecteur se trouve une base de type p présentant une région extrinsèque (17) disposée latéralement autour d'une région intrinsèque (18). Un émetteur n+ (20) est positionné directement au-dessus de la région de base intrinsèque. Le TBJ comprend également une région n+ (15) localisée située directement au-dessous de la région de base intrinsèque, laquelle accroît significativement les capacités de traitement de courant du transistor.