摘要:
An operational amplifier comprising two cascaded differential stages and suitable for an RC filter An operational amplifier with a differential input and a differential output comprises two cascaded differential stages 4 and 6 of relatively low gain, a dominant pole compensation capacitor being placed between the output nodes of the second stage 6. The propagation delay and power consumption may be low. The output common-mode voltage of the first or second stage may be controlled by use of a local replica circuit adjusting the current sources 12, 30. The amplifier may be used in a leapfrog active RC filter (figure 2).
摘要:
A wide-band differential amplifier includes four MOS transistors connected in a source-follower configuration for gm-cancellation. Accurate gain and low distortion of the amplified signals results over the frequency band.
摘要:
A differential driver includes a switching module and first and second voltage controlled voltage sources. The switching module has a plurality of switches each controlled by an input signal, a first voltage input and a second voltage input, and a signal output. The first voltage controlled voltage source is connected to the first voltage input. The first voltage controlled voltage source has a low impedance. The second voltage controlled voltage source is connected to the second voltage input. The second voltage controlled voltage source also has a low impedance. The switching circuit outputs an output signal having an output voltage and current controlled by the first and second voltage controlled voltage sources. The output signal is based upon the input signal.
摘要:
A differential driver includes a switching module and first and second voltage controlled voltage sources. The switching module has a plurality of switches each controlled by an input signal, a first voltage input and a second voltage input, and a signal output. The first voltage controlled voltage source is connected to the first voltage input. The first voltage controlled voltage source has a low impedance. The second voltage controlled voltage source is connected to the second voltage input. The second voltage controlled voltage source also has a low impedance. The switching circuit outputs an output signal having an output voltage and current controlled by the first and second voltage controlled voltage sources. The output signal is based upon the input signal.
摘要:
Die Erfindung betrifft einen rückgekoppelten Verstärker oder Schwellwertschalter für eine stromgespeiste Differenzstufe. Der erste Ausgang der Differenzstufe ist mit dem Emitter eines ersten Transistors und der zweite Ausgang mit dem Emitter eines zweiten Transistors verbunden. Ein Widerstand ist zwischen beide Ausgänge geschaltet. Zwei an die Versorgungsspannung angeschlossene Arbeitswiderstände sind vorgesehen, wobei der erste Arbeitswiderstand an den Kollektor des ersten Transistors und die Basis des zweiten Transistors angeschlossen ist und der zweite Arbeitswiderstand an den Kollektor des zweiten Transistors und die Basis des ersten Transistors angeschlossen ist.