MAR-6SM+
Overview
The MAR-6SM+ is a high-performance Darlington-pair monolithic amplifier designed for wideband gain applications from DC to 2 GHz. It operates as a 50-ohm gain block, providing stable performance with a low noise figure of approximately 2.3 dB. This versatile component is housed in a compact 4-pin Micro-X package, making it suitable for high-density PCB layouts requiring consistent RF amplification.
Why Choose This Part
The MAR-6SM+ offers an excellent balance of low noise and wide frequency response up to 2 GHz in a tiny footprint. Its internal 50-ohm matching simplifies RF design by eliminating the need for complex external impedance matching networks. The device is also internally biased, requiring only a simple external dropping resistor and a bias tee to operate from a standard voltage rail.
Applications
Getting Started
When integrating the MAR-6SM+, ensure proper PCB grounding by using thermal vias directly under the device ground pins to minimize parasitic inductance. Use a bias resistor calculated to maintain the device current near 16mA based on your supply voltage. High-quality DC-blocking capacitors should be placed at the input and output ports to maintain 50-ohm signal integrity.
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