Designed for use in the front end of a receiver chain in TDD-based systems, pSemi Corp., a Murata company, introduced two multi-chip modules – the PE53230 for 3.3–3.8 GHz and the PE53231 for 3.5–4.0 GHz. Each module combines two switches and two low-noise amplifiers (LNAs) for high- and low-band frequencies.
Dual-channel switch LNA module block diagram. Click for a larger image. (Source: pSemi)
The dual-channel switch LNA modules claim the lowest noise figure in the industry, at less than 1 dB. This enables best-in-class receiver sensitivity and performance while handling 20-W average input power, eliminating the need for external circuitry, said pSemi.
Targeting applications across wireless infrastructure including TDD-LTE macro and micro cells, 5G massive MIMO (mMIMO) systems and TDD-based communication systems, the modules can operate as a failsafe with unexpected high-power signals coming in from Tx, while improving receiver channel sensitivity with low noise figures, said the company.
Thanks to the high level of integration of the receiver front end, the modules can deliver high power handling, high linearity and a low noise figure for 5G mMIMO active antenna systems, said pSemi, and with high linearity (IIP3) and low power consumption, the highly integrated modules do not require any external matching networks.
Key features of the modules include a high gain of more than 36 dB, fast switching time of less than 600 ns and low power consumption of less than 500 mW/channel. They also claim the highest average input power handling at 20 W.
The PE53230 and PE53231 dual-channel switch LNA modules are housed in a 6 × 6-mm LGA package. Samples are available now, followed by commercial availability in the first quarter of 2024.
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