100 MHz to 1000 MHz Integrated Broadband Receiver

The ADRF6850 is a highly integrated broadband quadrature demodulator, frequency synthesizer, and variable gain amplifier (VGA). The device covers an operating frequency range from 100 MHz to 1000 MHz for use in both narrow-band and wideband communications applications, performing quadrature demodulation from IF directly to baseband frequencies.

The ADRF6850 demodulator includes a high modulus fractional-N frequency synthesizer with integrated VCO, providing better than 1 Hz frequency resolution, and a 60 dB gain control range provided by a front-end VGA.

Control of all the on-chip registers is through a user-selected SPI interface or I2C interface. The device operates from a single power supply ranging from 3.15 V to 3.45 V.

APPLICATIONS

* Broadband communications

* Cellular communications

* Satellite communications

* IQ quadrature demodulator

* Integrated fractional-N PLL and VCO

* Gain control range: 60 dB

* Input frequency range: 100 MHz to 1000 MHz

* Input P1dB: +12 dBm at 0 dB gain

* Input IP3: +22.5 dBm at 0 dB gain