PLL FREQUENCY SHNTHESIZER FOR PAGER

S5T8808A

1

INTRODUCTION

S5T8808A is a superior low-power-programmable PLL frequency

synthesizer which can be used in a high performance Wide Area

Pager system.

S5T8808A consists of 2 kinds of divider block including a 17bit Shift

register, 16-bit Latch, 14/16-bits Counter, Prescaler, and a phase

detector block including a Phase detector, Lock detector and a

Charge pump.

FEATURES

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Maximum operating frequency:

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On-chip reference oscillator supports external crystal which oscillates up to 18MHz

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Superior supply current:

•

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Reference frequency counter divider range: 1 / 28 ~ 1 / 65532 (Multiple 4)

But, the Divider range with FRC_High state: 1 / 7 ~ 1 / 16383

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RX frequency counter divider range: 1 / 28 ~ 1 / 65535

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Package type: 16

−TSSOP (0.65mm)

ORDERING INFORMATION

+: New Product

Device

Package

Operating Temperature

+S5T8808A01-R0B0

16

−TSSOP−0044

−25°C to +75°C

16

−TSSOP−0044

( Magnification = 1 : 4 )