Precision GaAs low-voltage DC amplifier

Details Precision GaAs low-voltage DC amplifier Precision GaAs low-voltage DC amplifier

1998-12-23

2000-09-19

Shingleton, Michael B

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330256, 330261, 330289, 330133, 330134, 330285, H03F 345

Patent

active

061218383

ABSTRACT:
A precision GaAs low-voltage DC amplifier includes a level shift circuit, an amplifier and a first and a second bias control circuit. The level shift circuit shifts an input signal to generate a level shifted input signal, whose bias level is controlled by a first bias control voltage. The amplifier amplifies the level shifted input signal to generate an output signal. The bias level of the output signal is controlled by a second bias control voltage. The first bias control circuit insures that the first bias control voltage varies as necessary with temperature to hold constant the bias level of the level shifted input signal. The second bias control circuit insures that the second bias control voltage varies as necessary with temperature to hold constant the bias level of the output signal.

REFERENCES:
patent: 4101841 (1978-07-01), Okada et al.
patent: 4868902 (1989-09-01), Sato
patent: 4897613 (1990-01-01), Rao et al.
patent: 5159288 (1992-10-01), Ito

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