Dual-Channel, 3.3 GHz to 4.0 GHz, 20 W Receiver Front End

The ADRF5515A is a dual-channel, integrated RF, front-end, multichip module designed for time division duplexing (TDD) applications. The device operates from 3.3 GHz to 4.0 GHz. The ADRF5515A is configured in dual channels with a cascading, two-stage low noise amplifier (LNA) and a high-power silicon singlepole, double-throw (SPDT) switch.

In high gain mode, the cascaded two-stage LNA and switch offer a low noise figure of 1.05 dB and a high gain of 36 dB at 3.6 GHz, with an output third-order intercept (OIP3) point of 35 dBm (typical). In low gain mode, one stage of the two-stage LNA is in bypass, providing 17 dB of gain at a lower current of 48 mA. In power-down mode, the LNAs are turned off and the device draws 13 mA.

In transmit operation, when RF inputs are connected to a termination pin (TERM-CHA or TERM-CHB), the switch provides low insertion loss of 0.5 dB and handles long-term evolution (LTE) average power (9 dB peak to average ratio (PAR)) of 43 dBm for full lifetime operation.

The device comes in an RoHS-compliant, compact, 6 mm × 6 mm, 40-lead lead frame chip scale package (LFCSP).

APPLICATION

* Wireless infrastructure

* TDD massive multiple input and multiple output and active antenna systems

* TDD-based communication systems

* Integrated dual-channel RF front end

* 2-stage LNA and high power silicon SPDT switch

* On-chip bias and matching

* Single-supply operation

* High power handling at TCASE = 105°C

* LTE average power (9 dB PAR) full lifetime: 43 dBm

* Gain

* High gain mode: 36 dB typical at 3.6 GHz

* Low gain mode: 17 dB typical at 3.6 GHz

* Low noise figure

* High gain mode: 1.05 dB typical at 3.6 GHz

* Low gain mode: 1.05 dB typical at 3.6 GHz