Analog Devices Inc.

ADG918BRM  

RF Switches

ADG918BRM Description

The ADG918BRM from Analog Devices Inc. is a high-performance SPDT (Single Pole Double Throw) RF switch designed for general-purpose RF applications up to 2GHz. Housed in an 8-pin MSOP package, this surface-mount switch offers low insertion loss (0.8dB @ 1GHz) and high isolation (37dB), making it ideal for signal routing in demanding RF systems. With an absorptive topology, it minimizes reflections, ensuring stable performance in impedance-sensitive circuits. The device operates on a low supply voltage (1.65V to 2.75V), making it suitable for portable and battery-powered applications. Although marked as obsolete, its robust IIP3 (36dBm) and P1dB (17dBm) specifications ensure reliable linearity and power handling in legacy designs.

ADG918BRM Features

• Frequency Range: 0Hz to 2GHz, covering DC to mid-band RF applications.
• Low Insertion Loss: 0.8dB at 1GHz, preserving signal integrity.
• High Isolation: 37dB to minimize crosstalk between channels.
• High Linearity: IIP3 of 36dBm and P1dB of 17dBm for distortion-free switching.
• Absorptive Topology: Reduces unwanted reflections, critical for impedance-matched systems.
• Low Voltage Operation: 1.65V to 2.75V supply range, ideal for portable devices.
• Surface-Mount MSOP Package: Compact form factor for space-constrained designs.
• General-Purpose RF Switch: Versatile for diverse RF signal routing needs.

ADG918BRM Applications

• Wireless Communication Systems: Signal routing in transceivers, base stations, and RF front-ends.
• Test & Measurement Equipment: Switching between test paths with minimal loss.
• Portable/Battery-Powered Devices: Low-voltage operation suits IoT, wearables, and handheld radios.
• Military/Aerospace: Reliable performance in legacy systems due to high linearity and isolation.
• Medical RF Systems: Precision signal switching in imaging and diagnostic equipment.

Conclusion of ADG918BRM

The ADG918BRM stands out for its low insertion loss, high isolation, and excellent linearity, making it a dependable choice for RF switching in both commercial and legacy systems. While obsolete, its absorptive design and low-voltage operation ensure compatibility with modern low-power applications. Engineers seeking a compact, high-performance SPDT switch for frequencies up to 2GHz will find this device well-suited for wireless, test, and portable systems. For new designs, consider Analog Devices' latest alternatives, but the ADG918BRM remains a proven solution for existing implementations.

ADG918BRM Documents

Download datasheets and manufacturer documentation for ADG918BRM

PCN Assembly/Origin :

Assembly Site Chg 26/Jan/2016      

Datasheets :

ADG918,919      

PCN Obsolescence/ EOL :

Lead(Pb)- Bearing Dev OBS 19/Jun/2017      

HTML Datasheet :

ADG918,919