MAR.8

The Mini-Circuits MAR.8 is an RF amplifier designed to offer advantages in stability and power dissipation. It operates with a typical bias current of 36mA and features specific bias resistor values that vary with the DC supply voltage. For a 10V DC supply, the recommended bias resistor is 174 Ohms; for 12V, it is 226 Ohms; and for 15V, it is 309 Ohms. The device voltage is typically 3.8V, allowing for a minimum DC supply voltage of 7V for stable bias current over temperature.

This amplifier series is noted for being unconditionally stable, with a stability factor k > 1 and stability measure beta > 0 at all frequencies. It also offers less power dissipation compared to previous models, leading to lower junction temperatures and higher reliability. The higher resistor values used in the MAR-8A and MAR-8ASM series can allow users to omit the RF choke in some applications, potentially saving costs. The typical device voltage is 3.8V, which is lower than the 7.8V of older models, enabling operation with lower DC supply voltages.