Description
The CMX90G301 is a low-power 50 Ω cascadable
MMIC gain block suitable for a wide variety of
wireless applications operating in the 1.4 –
7.1 GHz frequency range.
The gain block has a positive gain-slope of +1dB
across the band, eliminating the need for
equalisation and compensates for increasing
system losses with frequency.
CMX90G301 is highly integrated for ease of use,
minimising component count and board area. RF
ports are matched on-chip to 50 Ω with DCblocking
capacitors. An active bias circuit allows
the device to operate over a wide supply voltage
of 2.7V to 5V with typical current of 22 mA.
Using GaAs pHEMT to provide a combination of
low DC power, low noise and high gain.
An alternative part, CMX90G302, is available for
applications that require more gain-slope compensation.

Product Features
• Wide frequency range 1.4 – 7.1 GHz
• Positive gain-slope +1dB
• Small signal gain 14.8 – 16.0 dB
• Single positive DC supply 2.7 – 5 V
• Low noise figure 2 dB
• Input and output matched to 50 Ω
• Output P1dB +11.5 dBm @3.5 GHz
• 1.8 V logic compatible enable
• 105°C operating temperature

Applications
• Tx and Rx systems
• 4G / 5G wireless infrastructure
• TDD and FDD
• IF amplifier
• License-free bands
• General purpose gain block
• Eliminate passive equaliser