ADRF6655
FEATURES
Broadband active mixer with integrated fractional-N PLL RF input frequency range: 100 MHz to 2500 MHz Internal LO frequency range: 1050 MHz to 2300 MHz Flexible IF output interface Input P1d B: 12 d Bm Input IP3: 29 d Bm Noise figure (SSB): 12 d B Voltage conversion gain: 6 d B Matched 200 Ω output impedance SPI serial interface for PLL programming 40-lead 6 mm × 6 mm LFCSP
GENERAL DESCRIPTION
The ADRF6655 is a high dynamic range active mixer with integrated PLL and VCO. The synthesizer uses a programmable integer-N/fractional-N PLL to generate a local oscillator input to the mixer. The PLL reference input is nominally 20 MHz. The reference input can be divided by or multiplied by and then applied to the PLL phase detector. The PLL can support input reference frequencies from 10 MHz to 160 MHz. The phase detector output controls a charge pump whose output is integrated in an off-chip loop filter. The loop filter output is then applied to an integrated VCO. The VCO output at 2 × f...
