
Nippon Precision Circuits
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