Low frequency noise in npn and pnp polysilicon emitter bipolar junction transistors

Low frequency noise characteristics of a high voltage, high performance complementary polysilicon emitter (PE) bipolar transistors are described. The influence of the base biasing resistance, emitter geometry, and temperature on the noise spectra are discussed. The npn transistors studied exhibited 1/f and shot noise, but the pnp transistors, are characterized by significant generation-recombination noise contributions to the total noise. For …