INTRODUCTION
KS8809 is a superior low-power-programmable PLL frequency synthesizer which can be used in a high performance / Simple application for a Wide Area Pager system.
KS8809 consists of 2 kinds of divider block including a 19-bit Shift register, 16/18bits Latch, 13/15bits R-counter and 16/18bit N=Counter, 32/33 Prescaler, and a phase detector block including a Phase detector, Lock detector and a Charge pump.
KS8809 also has a battery saving mode which can control each register block by serial control data from the μ-controller (MICOM) and it also has boost up signal output for fast lockkng.