Datasheet > S1M8837

S1M8837

更新时间： 2024-01-23 20:32:03

品牌	Logo	应用领域
三星 - SAMSUNG		/
页数	文件大小	规格书
29页	236K
描述
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL

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S1M8837 数据手册

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL

S1M8836/37

INTRODUCTION

24-QFN-3.5´ 4.5

The S1M8836/37 is a Fractional-N frequency synthesizer with integrated

prescalers, designed for RF operation up to 1.0GHz/2.5GHz and for IF

operation up to 520MHz. The fractional-N synthesizer allows fast-locking, low

phase noise phase-locked loops to be built easily, thus having rapid channel

switching and reducing standby time for extended battery life. The S1M8836/37

based on S - D fractional-N techniques solves the fractional spur problems in

other fractional-N synthesizers based on charge pump compensation. The

synthesizer also has an additional feature that the PCS/CDMA channel

frequency in steps of 10kHz can be accurately programmed.

The S1M8836/37 contains quadruple-modulus prescalers. The S1M8836 RF

synthesizer adopts an 8/9/12/13 prescaler(16/17/20/21 for the S1M8837) and the IF synthesizer adopts an 8/9

prescaler. Phase detector gain is user-programmable for maximum flexibility to address IS-95 CDMA and

IMT2000. Various program-controlled power down options as well as low supply voltage help the design of

wireless cell phones having minimum power consumption.

Using the Samsung's proprietary digital phase-locked-loop technique, the S1M8836/37 has a linear phase

detector characteristic and can be used for very stable, low noise PLL's. Supply voltage can range from 2.7V to

4.0V. The S1M8836/37 is available in a 24-QFN package.

FEATURES

High operating frequency dual synthesizer

Operating voltage range : 2.7 to 4.0V

Low current consumption(S1M8836: 5.5mA, S1M8837: 7.5mA)

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

Quadruple-modulus prescaler and Fractional-N/Integer-N:

S1M8836

(RF) 8/9/12/13

(RF) 16/17/20/21

(IF) 8/9

Fractional-N

Integer-N

S1M8837

S1M8836/37

S1M8836: 250MHz to 1.0GHz(RF) / 45MHz to 520MHz(IF)

S1M8837: 500MHz to 2.5GHz(RF) / 45MHz to 520MHz(IF)

Excellent in-band phase noise ( – 85dBc/Hz @ PCS, – 90dBc/Hz @ CDMA)

Improved fractional spurious performance ( < 80dBc )

Frequency resolution (= 10kHz/64 @ f_ref= 9.84MHz)

Fast channel switching time: <500us

Programmable charge pump output current: from 50mA to 800mA in 50mA steps

Programmability via on-chip serial bus interface

12 3 4 5 6 7...29

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与S1M8837相关器件

型号	品牌	获取价格	描述	数据表
S1M8837X01-G0T0	SAMSUNG	获取价格	FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
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S1MAF	LGE	获取价格	普通整流二极管
S1MAF	CZSTARSEA	获取价格	SMAF
S1MAS	CZSTARSEA	获取价格	SMAS
S1MB	SEMTECH	获取价格	SURFACE MOUNT GENERAL RECTIFIER
S1MB	DIODES	获取价格	1.0A SURFACE MOUNT GLASS PASSIVATED RECTIFIER
S1MB	SSE	获取价格	SURFACE MOUNT GLASS PASSIVATED RECTIFIER