Catalog
0.38 GHz to 15 GHz TxVGA
Key Features
• Broadband TxVGA interfacing RF-DAC to beamformer and PA
• Operating frequency range: 0.38 GHz to 15 GHz, 2 product variants
• ADL6331-A: 0.38 GHz to 8.0 GHz
• ADL6331-B: 1.0 GHz to 15.0 GHz
• Optimizes common-mode rejection of RF-DAC, even-order harmonics, and intermodulation
• 50 Ω differential inputs and 50 Ω single-ended outputs
• Integrated broadband RF output balun
• 70 dB of gain control range in 1 dB step
• RF DSA range: 24.0 dB with 1.0 dB step
• Amplifier bypass loss of 12 dB each
• Asynchronous toggle between multiple pre-defined attenuation values and bypass amplifier stages.
• Power gain at 4 GHz: 15.5 dB (ADL6331-A), 15.8 dB (ADL6331-B)
• Noise figure at 4 GHz: 7.5 dB (ADL6331-A), 8.1 dB (ADL6331-B)
• OIP3 at 4 GHz: 32.8 dBm (ADL6331-A), 31.8 dBm (ADL6331-B)
• OIP2 at 4 GHz: 59.7 dBm (ADL6331-A), 56.2 dBm (ADL6331-B)
• OP1dB at 4 GHz: 12.2 dBm (ADL6331-A), 12.3 dBm (ADL6331-B)
• Fully programmable through a 3- or 4-wire SPI
• Single 3.3 V supply
• 24-terminal, 4.0 mm × 4.0 mm land grid array (LGA)
Description
AI
The ADL6331 transmit variable gain amplifier (TxVGA) provides an interface from RF digital-to-analog converters (RF DACs) to a singled-ended power amplifier (PA) signal chain. Each ADL6331 IC is composed of a balun, two differential RF amplifiers with bypass attenuators, and a digital step attenuator (DSA) to provide suitable transmitter performance in a 24-terminal, 4.0 mm x 4.0 mm LGA package.Serial-port interface (SPI) control is available to configure RF signal paths or to optimize supply current vs. performance.An integrated RF balun is used to provide a single-ended output over 0.38 GHz to 8.0 GHz (ADL6331-A) or 1.0 GHz to 15.0 GHz (ADL6331-B) with good impedance match.ApplicationsAerospace and defenseInstrumentation and test equipmentCommunication systems
