Overview: F1456
TX Digital VGA 1500 MHz to 2950 MHz Datasheet The F1456 is a High Gain / High Linearity 1500MHz to 2950MHz TX Digital Variable Gain Amplifier used in transmitter applications.
The F1456 TX DVGA provides 32.1dB maximum gain with +38dBm OIP3 and 3.9 dB noise figure. Up to 31.5dB gain control is achieved using the combination of a digital step attenuator (DSA) and a KLINTM RF Digital Gain Amplifier. This device uses a single 5V supply and 215mA of ICC.
This device is packaged in a 6 mm x 6 mm, 28VFQFPN with 50Ω single-ended RF input and RF output impedances for ease of integration into the signal-path.
Competitive Advantage
In typical Base Stations, RF VGAs are used in the TX traffic paths to drive the transmit power amplifier. The F1456 TX DVGA offers very high reliability due to its construction from a monolithic silicon die in a QFN package. The F1456 is configured to provide an optimum balance of noise and linearity performance consisting of a KLINTM RF amplifier, digital step attenuator (DSA) and a PA driver amplifier. The KLINTM amplifier maintains the OIP3 and output P1dB performance over an extended attenuation range when compared to competitive devices.
