S1M8822 datasheet(1/22 Pages) SAMSUNG

Part #	S1M8822

Description	INTERGER RF/IF DUAL PLL

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Manufacturer	SAMSUNG [Samsung semiconductor]

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INTERGER RF/IF DUAL PLL

S1M8821/22/23

1

INTRODUCTION

The S1M8821/22/23 is a high performance dual frequency

synthesizer with integrated prescalers designed for RF operation up

to 1.2GHz/2.0GHz/2.5GHz and IF operation up to 520MHz.

The S1M8821/22/23 contains dual-modulus prescalers. The RF

synthesizer adopts a 64/65 or a 128/129 prescaler(32/33 or 64/65 for

the S1M8823) and the IF synthesizer adopts an 8/9 or a 16/17

prescaler.

Using a proprietary digital phase-locked-loop technique, the

S1M8821/22/23 has linear phase detector characteristic and can be

used for very stable, low noise local oscillator signal. Supply voltage

can range from 2.7V to 4.0V. The S1M8821/22/23 is now available in

a 20-TSSOP/24-QFN package.

FEATURES

•

High operating frequency dual synthesizer

— S1M8821 : 0.1 to 1.2GHz (RF)/ 45 to 520MHz (IF)

— S1M8822 : 0.2 to 2.0GHz (RF)/ 45 to 520MHz (IF)

— S1M8823 : 0.5 to 2.5GHz (RF)/ 45 to 520MHz (IF)

•

Very low current consumption(8821:3.5mA, 22:4.5mA, 23:5.5mA)

•

Operating voltage range : 2.7 to 4.0V

•

Selectable power saving mode(Icc=1uA typical @3V)

•

Dual modulus prescaler :

S1M8821/22

(RF) 64/65 or 128/129

S1M8823

(RF) 32/33 or 64/65

S1M8821/22/23

(IF) 8/9 or 16/17

•

Programmability via serial bus interface

•

No dead-zone PFD

•

Variable charge pump output current

•

High speed lock mode

APPLICATIONS

•

Cellular telephone systems : S1M8821

•

Portable wireless communications : S1M8822 (PCS/PCN, cordless)

•

Wireless Local Area Networks (W-LANs) : S1M8823

•

Other wireless communication systems

20-TSSOP-BD44

24-QFN-3.5

×4.5

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