PGA-103+

PGA-103+ is an E-PHEMT low-noise amplifier from Mini-Circuits in a SOT-89 package (Case DF782), spanning 0.05 GHz to 4 GHz with a noise figure of 0.6 dB at 1 GHz and 0.9 dB at 2 GHz, 11.0 dB of gain at 2 GHz, 22.5 dBm P1dB and 45 dBm OIP3, running from a 5 V or 3 V supply per the datasheet. The very low noise figure lifts receiver sensitivity at the first stage, while the high intercept point keeps strong in-band signals from generating intermodulation products that mask weak ones. That helps radio, instrumentation and communications designs hold link margin without adding a discrete low-noise front end. Selection advice: pick PGA-103+ when first-stage noise figure drives system sensitivity and a moderate 11 dB gain is enough; if the chain needs more gain, plan a second stage rather than overdriving this one, and review the datasheet biasing arrangement for your chosen supply rail before layout. Parameters verified against Mini-Circuits documentation.