SM5170AV

SM5170AV NIPPON PRECISION CIRCUITS INC. PLL Synthesizer IC OVERVIEW The SM5170AV is a PLL synthesizer IC developed for application in pagers. It incorporates independently-controlled reference frequency and FIN input frequency dividers, and operates from a low-voltage supply to realize low power dissipation. It features a charge pump that operates at 3 V, making possible a wide range of VCO designs. FEATURES s s Supply voltages VDD1 = 0.95 to 1.2 V (prescaler, counters) VDD2 = 2.0 to 3.3 V (charge pump) FIN input frequency fFIN = 300 MHz (VDD1 = 0.95 V) fFIN = 330 MHz (VDD1 = 1.0 V) s s s s s Reference frequency fXIN = 25 MHz (VDD1 = 0.95 V) 20 to 262140 reference frequency divider ratio range (with 1/4 prescaler built-in) 1056 to 131071 FIN input frequency divider ratio range −10 to 60 °C operating temperature range 16-pin VSOP PINOUT (Top view) XIN XOUT VDD2 DB DO VSS FIN VDD1 1 16 TEST NC OPR LE DATA CLK LD 5170AV 8 9 NC ORDERING INFORMATION D e vice S M 5 1 7 0 AV P ackag e 16-pin V S O P NIPPON PRECISION CIRCUITS—1 SM5170AV PACKAGE DIMENSIONS Unit: mm 16-pin VSOP 4.4 0.2 6.4 0.2 0.10 0.05 5.1 0.2 1.15 0.1 0.275typ 0 0.15 - 0 + 0..1 05 0 10 0.65 0.10 + 0.10 0.22− 0.05 0.12 M 0.5 0.2 BLOCK DIAGRAM VDD1 AREA(1V) XIN XOUT 1/4 Prescaler 16Bit R−Counter Boost Signal Generator DB VDD2 AREA(3V) CLK DATA LE Latch Selector 16Bit R−Latch 22Bit Shift Register Level Shifter Phase Detector Charge Pump DO 17Bit N−Latch OPR VDD1 AREA...