Datasheet > LMX2531_07

LMX2531_07

更新时间： 2024-11-21 04:19:55

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
26页	532K
描述
High Performance Frequency Synthesizer System with Integrated VCO

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LMX2531_07 数据手册

January 2007

LMX2531

High Performance Frequency Synthesizer System with

Integrated VCO

General Description

Features

The LMX2531 is a low power, high performance frequency

synthesizer system which includes a fully integrated delta-

sigma PLL and VCO with fully integrated tank circuit. The third

and fourth poles are also integrated and also adjustable. Also

included are integrated ultra-low noise and high precision

LDOs for the PLL and VCO which give higher supply noise

immunity and also more consistent performance. When com-

bined with a high quality reference oscillator, the LMX2531

generates very stable, low noise local oscillator signals for up

and down conversion in wireless communication devices.

The LMX2531 is a monolithic integrated circuit, fabricated in

an advanced BiCMOS process. There are several different

versions of this product in order to accomdate different fre-

quency bands.

Multiple Frequency Options Available

■

See Selection Guide Below

—

Frequencies from: 765 MHz - 2790 MHz

PLL Features

■

Fractional-N Delta Sigma Modulator Order

programmable up to 4th order

—

FastLock/Cycle Slip Reduction with Timeout Counter

Partially integrated, adjustable Loop Filter

Very low phase noise and spurs

—

VCO Features

■

Integrated tank inductor

Low phase noise

—

Other Features

Device programming is facilitated using

a three-wire

MICROWIRE Interface that can operate down to 1.8 volts.

2.8 V to 3.2 V Operation

Low Power-Down Current

1.8V MICROWIRE Support

Package: 36 Lead LLP

—

Supply voltage range is 2.8 to 3.2 Volts. The LMX2531 is

available in a 36 pin 6x6x0.8 mm Lead-Free Leadless Lead-

frame Package (LLP).

Part

Low Band

High Band

Target Applications

LMX2531LQ1570E 765 - 818 MHz 1530 - 1636 MHz

LMX2531LQ1650E 795 - 850 MHz 1590 - 1700 MHz

LMX2531LQ1700E 831 - 885 MHz 1662 - 1770 MHz

3G Cellular Base Stations (WCDMA, TD-

■

SCDMA,CDMA2000)

2G Cellular Base Stations (GSM/GPRS, EDGE,

CDMA1xRTT)

■

LMX2531LQ1742

880 - 933 MHz 1760 - 1866 MHz

Wireless LAN

■

LMX2531LQ1778E 863 - 920 MHz 1726 - 1840 MHz

LMX2531LQ1910E 917 - 1014 MHz 1834 - 2028 MHz

LMX2531LQ2080E 952 - 1137 MHz 1904 - 2274 MHz

LMX2531LQ2265E 1089 - 1200 MHz 2178 - 2400 MHz

LMX2531LQ2570E 1168 - 1395 MHz 2336 - 2790 MHz

Broadband Wireless Access

Satellite Communications

Wireless Radio

Automotive

CATV Equipment

Instrumentation and Test Equipment

RFID Readers

201011

www.national.com

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与LMX2531_07相关器件

型号	品牌	获取价格	描述	数据表
LMX25311742	NSC	获取价格	High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ	NSC	获取价格	High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1146E	NSC	获取价格	High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1146E	TI	获取价格	LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1146E/NOPB	TI	获取价格	具有集成 VCO 的高性能频率合成器系统 \| NJH \| 36 \| -40 to 85
LMX2531LQ1226E	TI	获取价格	LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1226E	NSC	获取价格	High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1226E/NOPB	TI	获取价格	具有集成 VCO 的高性能频率合成器系统 \| NJH \| 36 \| -40 to 85
LMX2531LQ1312E	TI	获取价格	LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
LMX2531LQ1312E	NSC	获取价格	High Performance Frequency Synthesizer System with Integrated VCO

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