100 MHz to 2400 MHz I/Q Modulator with Integrated Fractional-N PLL and VCO ADRF6755ACPZ
ic programmer circuit
,programmable audio chip
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.