Attenuators

Attenuators

Analog Devices’ attenuators are available in a broad range of architectures and form factors, giving designers the flexibility to select a part best aligns with their system requirements. The parts are designed for the lowest insertion loss and best accuracy in the specified frequency range. Attenuators are manufactured in GaAs and Silicon (SOI) processes which make them versatile in performance and highly reliable in operation for a wide range of applications in instrumentation, communications, military and aerospace markets.

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Digital Step Attenuators

Analog Devices provides a range of broadband IC digital attenuators that come in low cost, leadless surface mount packages. Our digital attenuator family offers excellent attenuation and includes off chip ac ground capacitors for near dc operation, making it ideal for an extensive number of RF and IF applications. Applications • Cellular/3G infrastructure • Microwave radio and VSAT • Test equipment and sensors • CATV/satellite set-top Boxes • Data network equipment • WiMAX, WiBN, and fixed wireless • GSM, W-CDMA, and TD-SCDMA • Fiber optics and broadband telecom

Fixed Attenuators

The Analog Devices family of wideband, fixed value, 50 Ω matched attenuator products offers relative attenuation levels that range up to 20 dB. Our fixed attenuators are ideal for microstrip, hybrid, and multichip module applications that require extremely flat attenuation and excellent VSWR vs. frequency. Applications • Fiber optics • Microwave radio • Military and space hybrids • Test and measurement • Scientific instruments • RF/microwave circuit prototyping

Voltage Variable Attenuators

Analog Devices voltage variable attenuators (VVAs) ensure accurate control for a wide range of applications. Our absorptive VVAs are ideal for designs where an analog dc control signal controls RF signals levels over a 30 dB amplitude range, while our monolithic VVAs feature low insertion loss, high IP3, and wide dynamic range, as well as a balanced topology that delivers excellent return loss. Applications • Point-to-point and point-to-multipoint radios • Base station infrastructure • Fiber optics and broadband telecom • Microwave radio and VSAT • Military radios, radar, and ECM • Short haul/high capacity radios • SATCOM and sensors

Analog Design Tool: ADIsimRF™

ADIsimRF is an easy-to-use RF signal chain calculator. It calculates Cascaded Gain, Noise Figure, IP3, P1dB and Power Consumption. The number of stages can be varied up to a maximum of 20. Stages can be easily inserted, removed or temporarily muted.

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