CMOS gauge driver

Details CMOS gauge driver CMOS gauge driver

1992-10-08

1994-11-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including signal feedback means

324123C, 324144, 330294, 330307, H03F 134, G01R 130

Patent

active

053652002

ABSTRACT:
An integrated circuit apparatus comprises a first stage amplifier and a second stage amplifier. The first stage amplifier is characterized by a cross-coupled integrated layout providing a rail-to-rail swing and a linear gain, A, substantially defined as A=g.sub.m r.sub.o '. The second stage amplifier is coupled to the output of the first stage amplifier and comprises a high-voltage integrated circuit transistor with an AC feedback circuit, the AC feedback circuit comprising, in series, a capacitor, a N+ resistor and an N-WELL resistor, wherein the output of the second stage amplifier is used to directly drive an inductive load.

REFERENCES:
patent: 3624625 (1971-11-01), Stonestreet
patent: 4841238 (1989-06-01), Birch
patent: 4875041 (1989-10-01), Dannenberg
patent: 4914384 (1990-04-01), Taylor et al.
patent: 4935683 (1990-06-01), Kobler et al.
patent: 4991098 (1991-02-01), Dantzler
patent: 5059916 (1991-10-01), Johnson

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