Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1996-11-18
1999-05-25
Mottola, Steven J.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330257, 330265, H03F 326
Patent
active
059072628
ABSTRACT:
An amplifier circuit that offers high bandwidth operation and a high slew rate is disclosed. The amplifier circuit may also have an input voltage swing down to the negative rail which is particularly suitable for low voltage applications having a single power source. In one embodiment, the amplifier circuit amplifies a difference voltage between first and second input voltages to produce an output voltage, and includes: an analog voltage-to-current converter for receiving the first and second input voltages and producing complementary current signals; and a complementary mirror output stage coupled to receive the complementary current signals at respective mirror circuits. Each of the respective mirror circuits includes a pair of base-coupled transistors having their emitters respectively connected to supply potentials through resistors, and the complementary current signals from the analog voltage-to-current converter are respectively connected to at least one of the emitter of the base-coupled transistors for the respective mirror circuits.
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Graeme Jerald G.
Kolluri Madhav V.
Gain Technology Corporation
Maxim Integrated Products Inc.
Mottola Steven J.
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