GRF5126

High Gain Linear Driver

Tuning Range: 1.8 to 5 GHz

High Gain Linear Driver

Tuning Range: 1.8 to 5 GHz

The GRF5126 is a high-gain, two-stage driver amplifier targeting 3.3 to 3.8 GHz wireless infrastructure applications. Custom tuning allows the device to work from 1.8 to 5 GHz. The device delivers 24.6 dBm of OP1dB, 31.1 dBm of OIP3 and a low Noise Figure (NF) of 1.9 dB. The device also provides two selectable gain modes allowing a single component to address multiple use cases.

For optimal efficiency and linearity, the amplifier was designed to operate with a single 5 V supply voltage while using only 85-100 mA of quiescent current. 3.3 V supplies can also be used while still yielding 21 dBm of OP1dB. If desired, I_DDQ can be increased beyond the native biasing point for enhanced linearity performance.

The GRF5126 is designed for 50 Ω systems, typically needing only a two-element shunt-series match on the input and output ports. Separate tunes allow the GRF5126 to maintain its excellent performance over bandwidths exceeding 400 MHz.

Categories & Markets

Applications

• Linear Driver / Pre-driver Amplifiers
• 5G Sub-6 GHz Massive MIMO Base Stations
• Small Cells and Cellular Repeaters
• Millimeter Wave IF Stages
• High-performance RF Infrastructure

Features

Reference: High Gain Mode/5V/100mA/3.55GHz

• Noise Figure: 1.9 dB
• Gain: 37.5 dB
• OP1dB: 24.6 dBm
• OIP3: 31.1 dBm
• Two Selectable Gain Modes
• Gain Flatness as Low as 0.5 dB Over 400 MHz Tuning Bands 
• Excellent Linearity Performance Over Wide Bandwidths
• 3.3 V and 5 V Supply Voltages
• Flexible Biasing Provides Latitude for Linearity Optimization
• 100 mA Native Mode Quiescent Current Consumption
• 50 Ω Single-ended Input and Output Impedances
• -40 to 115 °C Operating Temperature Range
• Compact 3 x 3 mm QFN-16 Package
• Process: GaAs pHEMT
• RoHS Compliant