Low voltage amplifying circuit

摘要

An amplifier (170) includes first and second depletion mode transistors (161, 162) operating in response to first and second complementary signals (VAMP+, VAMP-), respectively, which route a first current (ISTACK1) from a first supply terminal (171) to an output (169) of the amplifier. Third and fourth depletion mode transistors (163, 164) receive the first and second complementary signals to route a second current (ISTACK2) from a second supply terminal (Ground) to the output. The first and second currents are summed to produce an output signal (VAMP2).