LMX1602 datasheet(1/17 Pages) NSC

Part #	LMX1602

Description	PLLatinum??Low Cost Dual Frequency Synthesizer

PDF	17 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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LMX1600

2.0 GHz/500 MHz

LMX1601

1.1 GHz/500 MHz

LMX1602

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.

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

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

serial interface (Data, Clock, LE).

V

CC

supply 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.

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

mount plastic package.

Features

n

V

CC = 2.7V to 3.6V operation

n

Low current consumption:

4mA @ 3V (typ) for LMX1601

5mA @ 3V (typ) for LMX1600 or LMX1602

n

PLL Powerdown mode: I

CC = 1 µA typical

n

Digital Filtered Lock Detects

n

Dual modulus prescaler:

— 2 GHz/500 MHz option:

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

— 1.1 GHz/500 MHz option:

(Main) 16/17 (Aux) 8/9

— 1.1 GHz/1.1 GHz option:

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

Applications

n

Cordless / Cellular / PCS phones

n

Other digital mobile phones

Functional Block Diagram

10012901

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

MICROWIRE™ and PLLatinum™ are trademarks of National Semiconductor Corporation.

June 2005

DS100129

www.national.com

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LMX1602 Datasheet(PDF) 1 Page - National Semiconductor (TI)

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