LMX2522 datasheet(1/18 Pages) NSC

tên linh kiện	LMX2522

Giải thích chi tiết về linh kiện	PLLatinum Frequency Synthesizer System with Integrated VCOs

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LMX2522/LMX2532

PLLatinum™ Frequency Synthesizer System with

Integrated VCOs

General Description

LMX2522 and LMX2532 are highly integrated, high perfor-

mance, low power frequency synthesizer systems optimized

for Korean PCS (K-PCS) with GPS and Korean Cellular

(K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile hand-

sets. Using a proprietary digital phase locked loop tech-

nique, LMX2522 and LMX2532 generate very stable, low

noise local oscillator signals for up and down conversion in

wireless communications devices.

LMX2522 and LMX2532 include a RF voltage controlled

oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N

RF PLL based on a delta sigma modulator. In concert these

blocks form a closed loop RF and GPS synthesizer system.

LMX2522 supports the Korean PCS band with GPS and

LMX2532 supports the Korean Cellular band with GPS.

LMX2522 and LMX2532 include an Integer-N IF PLL also.

For more flexible loop filter designs, the IF PLL includes a

4-level programmable charge pump. Together with an exter-

nal VCO and loop filter, LMX2522 and LMX2532 make a

complete closed loop IF synthesizer system.

Serial data is transferred to the device via a three-wire

MICROWIRE interface (DATA, LE, CLK).

Operating supply voltage ranges from 2.7 V to 3.3 V.

LMX2502 and LMX2512 feature low current consumption:

17 mA at 2.8 V.

LMX2522 and LMX2532 are available in a 28-pin leadless

leadframe package (LLP).

Features

n

Small Size

Small 5.0 mm x 5.0 mm x 0.75 mm 28-Pin LLP Package

n

RF/GPS Synthesizer System

Integrated RF VCO

Integrated GPS VCO

Integrated Loop Filter

Low Spurious, Low Phase Noise Fractional-N RF PLL

Based on 11-bit Delta Sigma Modulator

10 kHz Frequency Resolution

n

IF Synthesizer System

Integer-N IF PLL

Programmable Charge Pump Current Levels

Programmable Frequencies

n

Supports Various Reference Oscillator Frequencies

19.20/19.68 MHz

n

Fast Lock Time: 500 µs

n

Low Current Consumption

17 mA at 2.8 V

n

2.7 V to 3.3 V Operation

n

Digital Filtered Lock Detect Output

n

Hardware and Software Power Down Control

Applications

n

Korean PCS CDMA Systems with GPS

n

Korean Cellular CDMA Systems with GPS

Functional Block Diagram

20067201

PLLatinum is a trademark of National Semiconductor Corporation.

June 2003

DS200672

www.national.com

Số phần tương tự - LMX2522

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LMX2522	853Kb / 26P	LMX2522/LMX2532 PLLatinum??Frequency Synthesizer System with Integrated VCOs
	LMX2522	405Kb / 25P	LMX2522/LMX2532 PLLatinum™ Frequency Synthesizer System with Integrated VCOs REVISED APRIL 2013
	LMX2522LQ1635	853Kb / 26P	LMX2522/LMX2532 PLLatinum??Frequency Synthesizer System with Integrated VCOs
	LMX2522LQ1635/NOPB	853Kb / 26P	LMX2522/LMX2532 PLLatinum??Frequency Synthesizer System with Integrated VCOs
	LMX2522LQ1635/NOPB	405Kb / 25P	LMX2522/LMX2532 PLLatinum™ Frequency Synthesizer System with Integrated VCOs REVISED APRIL 2013

More results

Mô tả tương tự - LMX2522

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	LMX2502	184Kb / 18P	PLLatinum??Frequency Synthesizer System with Integrated VCO
	LMX2542	253Kb / 22P	PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
	LMX2525	237Kb / 17P	PLLatinum Dual Frequency Synthesizer System with Integrated VCOs
	LMX2505	231Kb / 16P	PLLatinu Dual Frequency Synthesizer System with Integrated VCOs
Silicon Laboratories	SI2200	824Kb / 30P	RF SYNTHESIZER WITH INTEGRATED VCOS INTEGRATED VCOS
STMicroelectronics	STW81101	1Mb / 42P	Multi-band RF frequency synthesizer with integrated VCOs 06-Mar-2006
National Semiconductor ...	LMX2515	251Kb / 17P	PLLatinum??Frequency Synthesizer System with Integrated VCO
STMicroelectronics	STW81101	1Mb / 48P	Multi-band RF frequency synthesizer with integrated VCOs 13-Aug-2007
Texas Instruments	LMX2502	842Kb / 24P	LMX2502/LMX2512 PLLatinum??Frequency Synthesizer System with Integrated VCO
Texas Instruments	LMX2522	853Kb / 26P	LMX2522/LMX2532 PLLatinum??Frequency Synthesizer System with Integrated VCOs

More results

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