High-Performance Voltage-Controlled Attenuators at RFMD

http://www.rfmd.com/

RF Micro Devices (RFMD.com) is known as the leader in the design and manufacture of quality semiconductor technologies and RF systems. RFMD's RFSA2013 and RFSA2023 are fully monolithic analog voltage controlled attenuators (VCAs) that simultaneously provide variable signal attenuation, with high linearity across a broad 50MHz to 4000MHz band. These VCAs feature exceptional linearity over a minimum temperature compensated 30dB gain control range. They also incorporate a revolutionary circuit architecture to solve a long-standing industry problem: high IP3, high attenuation range, low DC current, broad bandwidth and temperature compensated linear in dB control voltage characteristic. These voltage controlled attenuators are controlled by a single positive control voltage with on chip DC conditioning circuitry. The slope of the control voltage versus gain is selectable. The VCAs draws a very low 1mA current and are packaged in a small 3mm x 3mm QFN. Typical VCA's in this performance category have poor inherent attenuation versus temperature, and poor nonlinear attenuation versus control voltage characteristics. To correct these shortcomings, other VCA's require extensive off chip analog support circuitry that consume valuable PCB area and additional DC power. These game-changing products incorporate the complete solution in a small 3mm x 3mm QFN package, reducing reduces the footprint by 20X in area and reduces the DC power by 10X over conventional PIN diode approaches. Additional features of these VCAs include: Broadband 50MHz to 6000MHz Frequency Range, Linear in dB Attenuation Profile, Virtually no Profile Shift over Temperature, Simple Operation, Solution Cost Lower than Typical PIN Diode with Temperature Compensation, Current 10x Less than Typical PIN Diode Attenuation, and Mode Pin Allows Reversing Attenuation Slope.

VCA Applications:
Cellular, 3G Infrastructure
WiBro, WiMax, LTE
Microwave Radio
High-Linearity Power Control

To learn more about RFMD's products and these VCAs, please visit RFMD.com or call 336.678.5570. You can view RFMD's VCAs here: https://estore.rfmd.com/RFMD_OnlineSt... AND https://estore.rfmd.com/RFMD_OnlineSt...