LMX1501

更新时间： 2024-11-30 22:31:11

品牌	Logo	应用领域
美国国家半导体 - NSC		射频个人通信
页数	文件大小	规格书
22页	368K
描述
PLLatinumTM 1.1 GHz Frequency Synthesizer for RF Personal Communications

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数据手册

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LMX1501 数据手册

November 1995

LMX1501A/LMX1511 PLLatinum^TM

1.1 GHz Frequency Synthesizer

for RF Personal Communications

General Description

Features

RF operation up to 1.1 GHz

The LMX1501A and the LMX1511 are high performance fre-

quency synthesizers with integrated prescalers designed for

RF operation up to 1.1 GHz. They are fabricated using Na-

tional’s ABiC IV BiCMOS process.

2.7V to 5.5V operation

Low current consumption:

Dual modulus prescaler: 64/65 or 128/129

6 mA (typ) at V

The LMX1501A and the LMX1511 contain dual modulus

prescalers which can select either a 64/65 or a 128/129

divide ratio at input frequencies of up to 1.1 GHz. Using a

proprietary digital phase locked loop technique, the

LMX1501A/11’s linear phase detector characteristics can

generate very stable, low noise local oscillator signals.

Internal balanced, low leakage charge pump

Small-outline, plastic, surface mount JEDEC, 0.150

wide, (1501A) or TSSOP, 0.173 wide, (1511) package

Applications

Serial data is transferred into the LMX1501A and the

LMX1511 via a three line MICROWIRE^TMinterface (Data,

Enable, Clock). Supply voltage can range from 2.7V to 5.5V.

The LMX1501A and the LMX1511 feature very low current

consumption, typically 6 mA at 3V.

Cellular telephone systems

(AMPS, NMT, ETACS)

Portable wireless communications

(PCS/PCN, Cordless)

Advanced cordless telephone systems

The LMX1501A is available in a JEDEC 16-pin surface

mount plastic package. The LMX1511 is available in a

TSSOP 20-pin surface mount plastic package.

(CT-1/CT-1 , CT-2, ISM902-928)

Other wireless communication systems

Block Diagram

TL/W/12340–1

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

MICROWIRE^TMand PLLatinum^TMare trademarks of National Semiconductor Corporation.

1995 National Semiconductor Corporation

TL/W/12340

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6 7...22

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