Low noise amplifiers for RF applications deliver low power consumption and high linearity

Mouser now stocks the HMC8400 low noise amplifiers from Analog Devices. Members of Analog Devices’ extensive series of single-ended, fixed-gain RF ICs, the devices are wideband distributed LNAs that operate between 2GHz and 30GHz. These GaAs pHEMT MMIC devices deliver low power consumption, high linearity, low noise figures and various fixed-gain options for use in a variety of applications. The amplifiers provide 13.5dB of gain, a 2dB noise figure, a 26.5dBm output third-order intercept (IP3), and 14.5dBm of output power at the 1dB compression point (P1db). These self-biased, cascade-distributed amplifiers operate from a 5V supply voltage, and require only a single positive supply to achieve a drain current of 67mA. The amplifiers include a second gate bias voltage pad for gain control to allow designers to change the gate bias of the upper FETs within the range of -2V through +2.6V. The amplifiers feature 50ohm internally matched and DC-blocked RF input and outputs to help facilitate integration into multichip modules. Both the inputs and outputs are AC-coupled, but have a large resistor to ground for electrostatic discharge (ESD) protection. Designed for excellent linearity at high output power, the device maintains good heat dissipation and high reliability at elevated temperatures. The devices offer industry-leading performance for use in a broad array of RF applications that include test instrumentation, microwave radios and VSATs, military and space equipment, telecommunications and fiber optics.