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VOLUME -26 NUMBER 7
Publication Date: 07/1/2011
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Special Features: SMT and Production
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July 2011 Issue
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RFMD Adds 2 New VC Attenuators
Greensboro, NC — RF Micro Devices, Inc. (RFMD) has released of two new voltage controlled attenuators (VCAs), the RFSA2013 and RFSA2023. The new VCA components, which operate from 5V and 3V supplies, respectively, cover a wideband frequency range of 50 to 4000MHz and satisfy a wide range of applications across end markets.
These fully monolithic VCAs are said to provide excellent linearity with a third order intercept point greater than 50dBm over a 30dB gain control range. The devices incorporate a new circuit architecture that provides exceptional overall performance in linearity, attenuation range, DC current and bandwidth, as well as a linear attenuation profile versus control voltage.
These VCAs also employ internal temperature compensation to provide a stable attenuation profile over an operating temperature range from -40 to +85°C. Competing VCAs, typically using PIN diodes, have poor attenuation over temperature and a nonlinear attenuation profile versus control voltage. To correct performance shortcomings, these competing VCAs require further off-chip calibration and correction circuitry, which consumes valuable board space, adds cost and requires additional DC power. By comparison, RFMD's innovative products provide customers a complete monolithic solution in a small 3 x 3mm QFN package.
Contact: RF Micro Devices (RFMD), 7628 Thorndike Road, Greensboro, NC 27409-9421
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