Datasheet > LMX2515

LMX2515

更新时间： 2024-01-06 23:50:35

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
17页	252K
描述
PLLatinum⑩ Frequency Synthesizer System with Integrated VCO

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LMX2515 数据手册

April 2004

LMX2515

™

PLLatinum Frequency Synthesizer System

with Integrated VCO

General Description

Features

n Small size

LMX2515 is a highly integrated, high performance, low

power frequency synthesizer system optimized for Japan

PDC mobile handsets. Using a proprietary digital phase

locked loop technique, LMX2515 generates very stable, low

noise local oscillator signals for up and down conversion in

wireless communications devices.

5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package

n RF Synthesizer System

Integrated RF VCO

Integrated Loop Filter

Low Spurious, Low Phase Noise Fractional-N RF PLL

Based on 10-Bit Delta Sigma Modulator

Frequency Resolution Down to 20 kHz

n Supports Various Reference Frequencies

12.6/14.4/25.2/26.0 MHz

n Fast Lock Time: 300 µs

n Low Current Consumption

LMX2515 includes a voltage controlled oscillator (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

synthesizer system. The LMX2515LQ0701 supports the Ja-

pan PDC800 band and the LMX2515LQ1321 supports Ja-

pan PDC1500 band.

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

MICROWIRE interface (DATA, LE, CLK).

n 2.5 V to 3.3 V operation

n Digital Filtered Lock Detect Output

n Hardware and Software Power Down Control

Operating supply voltage ranges from 2.5 V to 3.3 V.

LMX2515 features low current consumption.

LMX2515 is available in a 28-pin leadless leadframe pack-

age (LLP).

Applications

n Japan PDC systems at 800 MHz frequency band.

n Japan PDC systems at 1500 MHz frequency band.

Functional Block Diagram

20068807

™

FastLock is a trademark of National Semiconductor Corporation.

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

™

PLLatinum is a trademark of National Semiconductor Corporation.

DS200688

www.national.com

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与LMX2515相关器件

型号	品牌	获取价格	描述	数据表
LMX2515LQ0701	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2515LQ0701/NOPB	TI	获取价格	PLL FREQUENCY SYNTHESIZER, 26MHz, QCC28, 5 X 5 MM, 0.75 MM HEIGHT, LLP-28
LMX2515LQ1321	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2515LQX0701	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2515LQX1321	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2522	NSC	获取价格	PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2522	TI	获取价格	具有集成 VCO 的 PLLatinum 双路频率合成器系统
LMX2522LQ1635	NSC	获取价格	PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2522LQ1635	TI	获取价格	具有集成 VCO 的 PLLatinum 双路频率合成器系统 \| NJB \| 28 \| -
LMX2522LQ1635/NOPB	NSC	获取价格	IC PLL FREQUENCY SYNTHESIZER, 19.68 MHz, QCC28, 5 X 5 MM, 0.75 MM HEIGHT, LLP-28, PLL or F