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參數資料
| 型號： | LMX5080MX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 諧振器 |
| 英文描述： | PLLatinum⑩ 2.7 GHz Low Power Dual Modulus Prescaler for RF Personal Communications |
| 中文描述： | LMX50 SERIES, PRESCALER, PDSO8 |
| 封裝： | PLASTIC, SOP-8 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 99K |
| 代理商： | LMX5080MX |
LMX5080
PLLatinum
2.7 GHz Low Power Dual Modulus
Prescaler for RF Personal Communications
General Description
The LMX5080 integrated dual modulus prescaler, is de-
signed to be used in a synthesized local oscillator for
2.5 GHz wireless transceivers. It is fabricated using Nation-
al’s 0.5μABiCV silicon BiCMOS process. The LMX5080 con-
tains three dual modulus prescalers. Either a 128/130,
256/158 or a 512/514 prescaler can be selected for up to
2.7 Gz RF input frequencies. The prescaler inputs can be
driven either differentially, or single ended with the use of a
coupling capacitor on one of the inputs to ground. The
LMX5080 CMOS output is optimized to generate very stable,
low switching noise output signals. The LMX5080 prescaler
can be used in conjunction with a low frequency Phase Lock
Loop to form a frequency synthesizer suitable for UHF trans-
ceivers. Supply voltage can range from 2.7V to 5.5V. The
LMX5080 features low current consumption; typically 7.0 mA
at 5V V
CC
The LMX5080 is available in a 8-pin Small Outline (SOP)
surface mount plastic package.
Features
n
2.7V to 5.5V operation
n
Low current consumption: 7 mA (typ)
@
5V
n
40C to +85C low noise CMOS output
n
Selectable dual modulus prescaler
128/130
256/258
512/514
n
8-pin small package outline (SOP)
Applications
n
2.5 GHz wireless communications systems (ISM)
n
Direct Broadcast Satellite systems (DBS)
n
Cable TV tuners (CATV)
Functional Block Diagram
PLLatinum
is a trademark of National Semiconductor Corporation.
DS100940-1
PRELIMINARY
April 1999
L
C
1999 National Semiconductor Corporation
DS100940
www.national.com
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