Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1997-12-08
1999-11-30
Pascal, Robert
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330256, H03F 345
Patent
active
059949619
ABSTRACT:
A gain control signal (VCTRL) is provided to a temperature compensating circuit (12) which produces a differential temperature compensating gain control signal (VDT). A gain compensating circuit (14) receives the differential temperature compensating gain control signal (VDT) and provides a differential gain and temperature compensating gain control signal (VDTG) to an amplifier (16). The differential gain and temperature compensating gain control signal (VDTG) varies the gain of the amplifier (16) to be substantially linear with respect to variation of the gain control signal (VCTRL) and to compensate for variation in temperature.
REFERENCES:
patent: 3942191 (1976-03-01), Berrod et al.
patent: 4101841 (1978-07-01), Okada et al.
patent: 4323854 (1982-04-01), Hester
patent: 5132632 (1992-07-01), Russel et al.
patent: 5471173 (1995-11-01), Moore et al.
patent: 5471654 (1995-11-01), Okazaki et al.
Au-Yeung On
Lunn Gerald
Ortiz Jeff
Wong Ka Hung Derek
Dover Rennie W.
Motorola Inc.
Nguyen Khanh Van
Pascal Robert
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