100 MHz to 2400 MHz I/Q Modulator with Integrated Fractional-N PLL and VCO ADRF6755ACPZ

FEATURES

I/Q modulator with integrated fractional-N PLL and VCO

Gain control span: 47 dB in 1 dB steps

Output frequency range: 100 MHz to 2400 MHz

Output 1 dB compression: 8 dBm at LO = 1800 MHz

Output IP3: 20.5 dBm at LO = 1800 MHz

Noise floor: −161 dBm/Hz at LO = 1800 MHz

Baseband modulation bandwidth: 600 MHz (3 dB)

Output frequency resolution: 1 Hz

SPI and I²C-compatible serial interfaces

Power supply: 5 V/380 mA

GENERAL DESCRIPTION

The ADRF6755 is a highly integrated quadrature modulator,

frequency synthesizer, and programmable attenuator. The device

covers an operating frequency range from 100 MHz to 2400 MHz

for use in satellite, cellular, and broadband communications.

The ADRF6755 modulator includes a high modulus, fractional-N

frequency synthesizer with integrated VCO, providing less than

1 Hz frequency resolution, and a 47 dB digitally controlled output

attenuator with 1 dB steps.

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 4.75 V to 5.25 V.