Product Details
- Independent quad channels for FDD TX applications
- 400MHz to 1100MHz
- 28dB typical max gain at 900MHz
- Precise SPI-controlled Glitch-Free™ gain adjustment
- 31.5dB gain range with 0.5dB step size
- 5.7dB NF at 900MHz
- +35dBm OIP3 at 900MHz
- +17dBm output P1dB at 900MHz
- 3.3V supply voltage
- ICC = 524mA
- 100Ω differential input impedances
- 50Ω single-ended output impedances
- 1.8V and 3.3V logic support
- Independent channel standby modes for power savings
- Operating temperature (TEP) range: -40 °C to +115 °C
- 8mm × 8mm, 56-LGA package
The F4481 is a 400MHz to 1100MHz quad path TX Digital Variable Gain Amplifier (DVGA) outfitted with 100Ω differential inputs and 50Ω single-ended outputs. The device is part of a complete family of VGAs targeting Frequency Division Duplex (FDD) or Time Division Duplex (TDD) applications within the 400MHz to 4200MHz frequency range. Using a single 3.3V power supply and only 520mA of ICC, the F4481 provides four independent transmit paths, each with 28dB typical maximum gain, +35dBm OIP3, +17dBm output P1dB, and 5.7dB NF. Each channel includes a Glitch-Free™ digital step attenuator that reduces gain by up to 31.5dB in precise 0.5dB steps.
The F4481 is packaged in an 8mm × 8mm 56-LGA, with matched 100Ω differential input and 50Ω single-ended output impedances for ease of integration into the signal path.
- 4G and 5G multi-mode, multi-carrier transmitters
- LTE and UMTS/WCDMA base stations
- Active antenna systems
- Digital radio
.PNG)
