SP5848QP1T 2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL

SP5848QP1T 2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL

The SP5848 is a dual PLL frequency synthesizer controlled by a 3-wire bus optimised for application in double conversion tuners. Each synthesiser loop within the SP5848 is independently addressable and contains an RF programmable divider, phase/frequency detector and charge pump/loop amplifier secti.

Features

G Ordering Information SP5848/KG/QP1S SP5848/KG/QP1T G G G Dual independent PLL frequency synthesisers in a single package, optimised for double conversion cable tuners, offering improved application 2.2GHz up-synthesiser optimised for low phase noise up to comparison frequencies of 4MHz 1.3GHz down-synthesiser optimised for low phase noise AND small step size Common reference oscillator and divider with independently selectable ratios for each synthesiser 10:1 programmable charge pump current ratio in up synthesiser 3-Wire bus programmable, each synthesiser indepently addressable Low power.