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Analog Devices Inc. (ADI), a leader in high performance semiconductors for signal processing applications and RF ICs, introduced a new highly integrated demodulator for broadband applications, such as cellular base stations, satellite communications, point-to-point (PtP) radios and defense systems. ADI’s new ADRF6850 demodulator expands ADI’s RF/microwave product portfolio and offers the highest level of integration and functionality by combining five devices and three RF functions into one small-footprint, surface-mount chip.
Unlike discrete implementations that use a multi-chip approach, ADI’s single-chip ADRF6850 demodulator saves considerable board space, reduces cost and simplifies development by integrating a 60 dB VGA (variable gain amplifier), a fractional-N PLL (phase locked loop) synthesizer with VCO (voltage controlled oscillator) and two baseband ADC drivers all in an 8 x 8 mm LFCSP package.
The ADRF6850 operates over a broad frequency range from 100 to 1000 MHz and supports narrow band and wideband signal modes up to 250 MHz. The device offers best-in-class RF performance with an input IP3 (third order intercept) of 22.5 dBm, P1dB (input compression point) of 12 dB and a noise figure of 11 dB. Furthermore, the ADRF6850 also supports the user selected SPI/I2C serial interface and is fully supported by the latest version of ADI’s popular PLL design tool, ADIsimPLL.
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