OVERVIEW

The SM5168 series are PLL synthesizer ICs fabricated using NPC’s Molybdenum-gate CMOS process. They provide several combinations of reference and comparator frequency divider ratios, set in master-slice, making them ideal for frequency synthesizers in IF stages of mobile communications devices. They also feature a lock detect signal output (LD).

FEATURES

■ 2.7 to 3.6V operating supply voltage range

■ Maximum operating frequency

• SM5168A× series: 200MHz, VDD = 2.7V

• SM5168C× series: 340MHz, VDD = 2.7V

■ Operating current consumption

• SM5168A× series: 3.3mA (typ, 200MHz at 0.3Vp-p, VDD = 3.0 V)

• SM5168C× series: 4mA (typ, 340MHz at 0.3Vp-p, VDD = 3.0 V)

■ SM5168A× (built-in standby function) and SM168C× (dual frequency divider ratios) series available, as set by master-slice

■ Charge pump output with output polarity for connection to passive filter

■ Lock detect function output

■ −30 to 85°C operating temperature range

■ 8-pin plastic VSOP

APPLICATIONS

■ Mobile communications

■ Portable telephones

■ Related applications