Borui Jixin New Product Recommendation: Noise Figure of 0.35 dB | Ultra-Low-Noise Amplifier for L- and S-Bands
Product Overview
● L- and S-band ultra-low-noise amplifier
Recently, Borei Jixin has launched two new ultra-low-noise amplifiers—BR9918DAJ and BR9919DAJ. Operating in the frequency range of 0.4 GHz to 3 GHz, both amplifiers come in a DFN8 package. While achieving ultra-low noise performance, they also deliver high linearity and a compact size. In addition, both products operate on a single +5V supply and support external current adjustment, allowing for flexible tuning to meet varying power consumption and performance requirements.
Among them, the BR9919DAJ stands out particularly. At 1.2 GHz, its noise figure is only 0.35 dB, while its OIP3 reaches 38.2 dBm. This significantly optimizes the system's noise floor and receiver sensitivity, thereby extending communication range and enhancing the ability to stably capture and decode weak signals.
These two products are ideal front-end receivers for ultra-long-distance communication systems such as Beidou, TianTong, and radar, providing reliable assurance for critical links.
● This product series summary
Introduction to BR9919DAJ
Operating frequency: 0.8 GHz ~ 3 GHz
Small-signal gain: 25.8 dB @ 1.2 GHz
Output power 1 dB compression point: 19.9 dBm at 1.2 GHz
Third-order intermodulation point of output power: 38.2 dBm @ 1.2 GHz
Noise figure: 0.35 dB @ 1.2 GHz
Vdd = +5V, static current 78mA
Package type: DFN8 (2mm × 2mm)
RF characteristics 
Chip rendering
(Source: Zhongborui Jixin official website; please contact us for removal if there is any infringement.)
Hot News
2026 MCU Industry Outlook: Market Expansion, Technological Upgrades, and Supply Chain Restructuring
In 2026, the global microcontroller (MCU) industry is expected to maintain steady growth, driven by robust demand across multiple sectors, including automotive electrification, industrial automation, and IoT and AI infrastructure. At the same time, supply-chain constraints and successive price hikes will persist throughout the year. International industry leaders are accelerating their localization strategies, while domestic manufacturers continue to make breakthroughs in high-end offerings and product differentiation.
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