Analog Devices Inc. CN0534 5.8GHz RF LNA Receiver Reference Design

Analog Devices Inc. CN0534 5.8GHz RF LNA Receiver Reference Design provides high gain, robust overpower monitoring, and protection, all in a small footprint. This feature is an excellent addition to any ISM band application where low signal strength or distance may be a complication. The circuit is a high-performance RF receiver system with +23dB of gain, optimized for operation at a center frequency of 5.8GHz. The input is unfiltered, maintaining a noise figure of 2dB, while a bandpass filter at the output attenuates out-of-band interferers.

Analog Devices Inc. CN0534 includes a high-speed overpower detector and switch that protects sensitive downstream equipment connected to the receiver system. The receiver system automatically returns to regular operation when the RF power level drops within the acceptable range. The RF inputs and outputs are standard SMA connectors, and the entire design is powered from a single micro USB connector. Parts used in reference design include HMC717A low noise amplifier, ADL5904 TruPwr detector, HMC802A 1-bit digital positive control attenuator, and LT8335 boost/SEPIC/inverting converter. It also consists of the ADM7150 ultra-low-noise/high PSRR LDO, ADP150 ultralow noise linear regulator, and LTC6991 low-frequency oscillator.

Features

23.5dB gain
5.8GHz optimized LNA

ISM band operation
USB powered

Required Equipment

EVAL-CN0534-EBZ board
ADALM-Pluto software-defined radio active learning module
Two (2) micro-USB power adaptors OR Two (2) micro-USB to USB cables for powering up ADALM-Pluto and EVAL-CN0534-EBZ

One (1) SMA male to SMA male cable
One (1) SMA 10dB RF Attenuator (6610_SMA-50-2/199_NE) OR any equivalent RF Attenuator with the same attenuation or higher