Analog Devices Inc. ADRF5549 Dual-Channel RF FEMs

Analog Devices Inc. ADRF5549 Dual-Channel RF Front-End Modules (FEMs) are designed for Time Division Duplexing (TDD) applications that operate from 1.8GHz to 2.8GHz. These multi-chip modules are configured in dual-channel with a cascading, two-stage, Low Noise Amplifier (LNA), and a high-power silicon Single-Pole Double-Throw (SPDT) switch. The ADRF5549 FEMs feature high-power handling capacity, low current supply, high-isolation, and low insertion loss. These modules come in a RoHS-compliant, compact 6mm x 6mm dimensions, and 40-lead, Lead Frame Chip-Scale Package (LFCSP). Typical applications include wireless infrastructure, TDD-based communication systems, TDD massive Multiple Input and Multiple Output (MIMO), and active antenna systems.

Features

Integrated dual-channel RF front end module:
- 2-stage LNA and high power SPDT switch
- On-chip bias and matching
- Single-supply operation
Gain:
- High gain mode: 35dB typical at 2.3GHz
- Low gain mode: 17dB typical at 2.3GHz
Low noise figure:
- High gain mode: 1.4dB typical at 2.3GHz
- Low gain mode: 1.4dB typical at 2.3GHz
High isolation:
- Between RxOUT-ChA and RxOUT-ChB: 50dB typical
- Between TERM-ChA and TERM-ChB: 62dB typical
Low insertion loss: 0.6dB typical at 2.3GHz
High power handling at T_CASE = 105°C

Full lifetime:
- LTE average power (9dB PAR): 40dBm
Single event (<10sec operation)
- LTE average power (9dB PAR): 43dBm
High OIP3: 32dBm typical
Power-down mode and low gain mode for LNA
Low supply current:
- High gain mode: 85mA typical at 5V
- Low gain mode: 35mA typical at 5V
Power-down mode: 12mA typical at 5V
Positive logic control
6mm × 6mm dimensions
40-lead LFCSP package