The ADRF6655 active mixer or ADRF6510 dual programmable filter and VGA integrate multiple functions and discrete devices into a single monolithic chip, reducing component count by a factor of four over traditional discrete RF designs. Operating within the 100 to 2,500-MHz frequency range, the ADRF6655 features a fully integrated fractional-N PLL synthesizer, a VCO, and associated LDO regulator circuits. The mixer also provides exceptional performance for both up- and down-conversion applications.
The PLL and VCO provide a fully integrated LO circuit that can also be brought off-chip for external use. The ADRF6655 operates on a single 5 V supply and features an input linearity IP3 of 29 dBm; an input compression P1dB of 14 dBm; a conversion gain of 6 dB, a noise figure of 12 dB, and LO phase noise of –111 dBc at 100-kHz offset.
The ADRF6510 provides an adaptable multistage adjustable gain control range of 50 dB, a preamp prior to the filters provide a 6-dB step; while the variable-gain amplifiers that follow the filter networks provide a gain range of –5 to 45 dB. Features include greater than 60 dBc IMD3 — making it suited for high order QAM modulation, quadrature (I-Q) communications systems supporting high-bandwidth signals up to 56 MHz. The ADRF6655 is available now in a 6 x 6-mm 40-pin LFCSP package, while the ADRF6510 is housed in a 5 x 5-mm 32-pin LFCSP package. (Ea/1,000: ADRF6655, $9.98; ADRF6510, $8.99 — available now.)
