What is atf-54143?

Data Sheet Description Agilent Technologies’s ATF-54143 is a high dynamic range, low noise, E-PHEMT housed in a 4-lead SC-70 (SOT-343) surface mount plastic package. The combination of high gain, high linearity and low noise makes the ATF-54143 ideal for cellular/PCS base stations, MMDS, and other systems in the 450 MHz to 6 GHz frequency range.

What is the Avago atf-54143?

The Avago ATF-54143 is one of a family of high dynamic range, low noise enhancement mode PHEMT discrete transistors designed for use in low cost commercial applications in the VHF through 6 GHz frequency range. It is housed in a 4-lead SC-70 (SOT- 343) surface mount plastic package, and operates from a single regulated supply.

What is the active bias scheme of atf-54143 LNA?

Typical ATF-54143 LNA with Active Biasing. An active bias scheme is shown in Figure 2. R1 and R2 provide a constant voltage source at the base of a PNP transistor at Q2. The constant voltage at the base of Q2 is raised by 0.7 volts at the emitter. The constant emitter voltage plus the regulated V DD supply are present across resis- tor R3.

What is the difference between the atf-54143 die and package model?

The non-linear model describing the ATF-54143 includes both the die and associated package model. The package model includes the effect of the pins but does not include the effect of the additional source inductance associated with grounding the source leads through the printed circuit board.