Datasheet > LMX1600_05

LMX1600_05

更新时间： 2024-01-20 16:02:50

品牌	Logo	应用领域
美国国家半导体 - NSC		半导体
页数	文件大小	规格书
17页	629K
描述
PLLatinum⑩ Low Cost Dual Frequency Synthesizer

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数据手册

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LMX1600_05 数据手册

June 2005

LMX1600

LMX1601

LMX1602

2.0 GHz/500 MHz

1.1 GHz/500 MHz

1.1 GHz/1.1 GHz

™

PLLatinum Low Cost Dual Frequency Synthesizer

General Description

The LMX1600/01/02 is part of a family of monolithic inte-

grated dual frequency synthesizers designed to be used in a

local oscillator subsystem for a radio transceiver. It is fabri-

cated using National’s 0.5u ABiC V silicon BiCMOS process.

Features

n V_CC= 2.7V to 3.6V operation

n Low current consumption:

4 mA 3V (typ) for LMX1601

5 mA 3V (typ) for LMX1600 or LMX1602

n PLL Powerdown mode: I_CC= 1 µA typical

n Digital Filtered Lock Detects

n Dual modulus prescaler:

The LMX1600/01/02 contains two dual modulus prescalers,

four programmable counters, two phase detectors and two

selectable gain charge pumps necessary to provide the

control voltage for two external loop filters and VCO loops.

Digital filtered lock detects for both PLLs are included. Data

— 2 GHz/500 MHz option:

(Main) 32/33 (Aux) 8/9

— 1.1 GHz/500 MHz option: (Main) 16/17 (Aux) 8/9

™

is transferred into the LMX1600/01/02 via a MICROWIRE

serial interface (Data, Clock, LE).

— 1.1 GHz/1.1 GHz option:

(Main) 16/17 (Aux) 16/17

V_CCsupply voltage can range from 2.7V to 3.6V. The

LMX1600/01/02 features very low current consumption -

typically 4.0 mA at 3V for LMX1601, 5.0 mA at 3V for

LMX1600 or LMX1602. Powerdown for the PLL is hardware

controlled.

Applications

n Cordless / Cellular / PCS phones

n Other digital mobile phones

The LMX1600/01/02 is available in a 16 pin TSSOP surface

mount plastic package.

Functional Block Diagram

10012901

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

™

MICROWIRE and PLLatinum are trademarks of National Semiconductor Corporation.

DS100129

www.national.com

12 3 4 5 6 7...17

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