Jeffrey Lynn Townsend

US Patent:

55370799, Jul 16, 1996

Filed:

Dec 5, 1994

Appl. No.:

8/349261

Inventors:

Royal A. Gosser - Reidsville NC
Jeffrey A. Townsend - North Chelmsford MA

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H03F 326

US Classification:

330265

Abstract:

An IC amplifier having first and second cascaded stages formed by respective pairs of symmetrical complementary bipolar transistors followed by a unity gain buffer amplifier and provided with overall current feedback. The quiescent collector currents of the second amplifier stage are controlled by respective transconductance generators with respective complementary bipolar transistors connected in parallel relationship to the transistors of the second stage. The collector currents of the transconductance generators are fixed at the levels of respective reference current generators.