LNA Boosts ISM Band Performance Without Penalty

Aug. 24, 2009
In many industrial, scientific, and medical (ISM) band wireless applications, receiver sensitivity greatly limits the range and reliability of the radio link. One way to get greater sensitivity is to add more gain. But that works well only if the noise fi

In many industrial, scientific, and medical (ISM) band wireless applications, receiver sensitivity greatly limits the range and reliability of the radio link. One way to get greater sensitivity is to add more gain. But that works well only if the noise figure is good enough. The Maxim Integrated Products MAX2634 solves that problem for some applications. This low-noise amplifier (LNA) for the 315- and 433-MHz ISM bands improves receiver sensitivity and offers an ultra-low 1.25-dB noise figure. Made from silicon-germanium (SiGe) biCMOS, the device generally outperforms discrete gallium-arsenide (GaAs) transistors and other CMOS circuits.

The MAX2634 suits automotive remote keyless entry (RKE) and tire-pressure monitoring designs, but it’s also a good match for any ISM application. It consumes 2.5 mA of current with a 2.2- to 5.5-V supply, and it has a temperature range of –40°C to 125°C. Also, its logic-enabled shutdown mode reduces supply current to less than 1 µA and eliminates the two discrete transistors normally needed to implement a shutdown function. No dc blocking capacitors are needed, keeping the footprint for key fob designs minimal.

The package is tiny 2- by 2-mm, six-pin SC70. Prices start at $0.50 in 1000-unit quantities. An evaluation kit is available for $50.

Maxim Integrated Products

www.maxim-ic.com/MAX2634

Sponsored Recommendations

Board-Mount DC/DC Converters in Medical Applications

March 27, 2024
AC/DC or board-mount DC/DC converters provide power for medical devices. This article explains why isolation might be needed and which safety standards apply.

Use Rugged Multiband Antennas to Solve the Mobile Connectivity Challenge

March 27, 2024
Selecting and using antennas for mobile applications requires attention to electrical, mechanical, and environmental characteristics: TE modules can help.

Out-of-the-box Cellular and Wi-Fi connectivity with AWS IoT ExpressLink

March 27, 2024
This demo shows how to enroll LTE-M and Wi-Fi evaluation boards with AWS IoT Core, set up a Connected Health Solution as well as AWS AT commands and AWS IoT ExpressLink security...

How to Quickly Leverage Bluetooth AoA and AoD for Indoor Logistics Tracking

March 27, 2024
Real-time asset tracking is an important aspect of Industry 4.0. Various technologies are available for deploying Real-Time Location.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!