SiGe Low Noise Amplifier
The new LNA T0952 with 3-stage amplifier and switchable gain provides the perfect combination of low noise (NF = 2.5 dB in high-gain mode), large signal capability (IIP3= -8 dBm in low-gain mode) and high reverse isolation (>40 dB). A high reverse isolation ensures that no power will be emitted between mixer and antenna in direct-conversion applications. The resulting high dynamic range ensures maximum reception quality at both very small and very large signal levels.
The new circuits are easy to use. Design-in can be carried out quickly with only few external components. The low noise figure at simultaneously good 50 ohm matching additionally simplifies design-in. Both low current consumption (IS = 10 mA at low gain mode) and power-down function help to extend battery lifetime. The calibration mode is especially suited for direct conversion receivers (DCR) during DC-calibration period and offers a better impedance matching at the output compared to the output matching of inactive LNA.