IC Simplifies Receiver Design

June 25, 2013
An IC combines a mixer and synthesizer for communications receiver applications from 700 to 2700 MHz.

Model ADRF6620 from Analog Devices, Inc. is an integrated circuit (IC) that combines an active mixer and a frequency synthesizer for next-generation communications applications from 700 to 2700 MHz. Ideal for cellular-communications base stations, the device consists of a high-linearity, broadband active mixer, an integrated fractional-N phase-locked loop (PLL), a low phase noise multi-core voltage-controlled oscillator (VCO), and a variable-gain intermediate-frequency (IF) amplifier (VGA). It also integrates a 4:1 RF switch, an on-chip tunable RF balun, and a programmable RF attenuator. The integrated synthesizer enables continuous LO coverage from 350 to 2850 MHz. The integrated attenuator offers an attenuation range of 0 to 15 dB with 1-dB step size. The integrated high-linearity VGA provides additional gain range from 0 to 12 dB in 0.5-dB steps for maximum flexibility in driving an analog-to-digital converter (ADC). The ADRF6620 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 48 pin, RoHS-compliant, 7 x 7 mm LFCSP package with an exposed paddle for operating temperatures from -40 to +85°C.

Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106; (781) 329-4700, FAX: (781) 461-3113, www.analog.com.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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