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LTC6404-2 PDF预览

LTC6404-2

更新时间: 2024-11-21 12:00:39
品牌 Logo 应用领域
凌特 - Linear 驱动器放大器
页数 文件大小 规格书
28页 1703K
描述
High Linearity Differential RF/IF Amplifier/ADC Driver

LTC6404-2 数据手册

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LTC6430-15  
High Linearity Differential  
RF/IF Amplifier/ADC Driver  
FeaTures  
DescripTion  
The LTC®6430-15 is a differential gain block amplifier  
designed to drive high resolution, high speed ADCs with  
excellent linearity beyond 1000MHz and with low associ-  
atedoutputnoise. TheLTC6430-15operatesfromasingle  
5V power supply and consumes only 800mW.  
n
50.0dBm OIP3 at 240MHz into a 100Ω Diff Load  
n
NF = 3.0dB at 240MHz  
n
20MHz to 2000MHz Bandwidth  
15.2dB Gain  
n
n
A-Grade 100% OIP3 Tested at 240MHz  
n
1.0nV/√Hz Total Input Noise  
Initsdifferentialconfiguration,theLTC6430-15candirectly  
drive the differential inputs of an ADC. Using 1:2 baluns,  
the device makes an excellent 50Ω wideband balanced  
amplifier. While using 1:1.33 baluns, the device makes  
a high fidelity 50MHz to 1000MHz 75Ω CATV amplifier.  
n
S11 < –15dB Up to 1.2GHz  
n
S22 < –15dB Up to 1.2GHz  
n
>2.75V Linear Output Swing  
P-P  
n
n
n
n
n
n
n
n
P1dB = 24.0dBm  
Insensitive to V Variation  
CC  
The LTC6430-15 is designed for ease of use, requiring a  
minimum of support components. The device is internally  
matched to 100Ω differential source/load impedance. On-  
chipbiasandtemperaturecompensationensureconsistent  
performance over environmental changes.  
100Ω Differential Gain-Block Operation  
Input/Output Internally Matched to 100Ω Diff  
Single 5V Supply  
DC Power = 800mW  
Unconditionally Stable  
4mm × 4mm, 24-Lead QFN Package  
The LTC6430-15 uses a high performance SiGe BiCMOS  
process for excellent repeatability compared with similar  
GaAsamplifiers.AllA-gradeLTC6430-15devicesaretested  
and guaranteed for OIP3 at 240MHz. The LTC6430-15 is  
housed in a 4mm × 4mm, 24-lead, QFN package with an  
exposedpadforthermalmanagementandlowinductance.  
For a single-ended 50Ω IF gain block with similar perfor-  
applicaTions  
n
Differential ADC Driver  
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Differential IF Amplifier  
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OFDM Signal Chain Amplifier  
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50Ω Balanced IF Amplifier  
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75Ω CATV Amplifier  
mance, see the related LTC6431-15.  
.
n
700MHz to 800MHz LTE Amplifier  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
OIP3 vs Frequency  
Typical applicaTion  
50  
48  
46  
44  
42  
40  
38  
36  
Differential 16-Bit ADC Driver  
5V  
V
CM  
R
F
V
= 5V  
CC  
CHOKES  
1:2  
BALUN  
ADC  
V
P
= 5V  
LTC6430-15  
R
CC  
50Ω  
= 2dBm/TONE  
OUT  
IN  
Z
T
= Z  
= 100Ω DIFF.  
OUT  
= 25°C  
= 100Ω  
R
= 100Ω  
FILTER  
LOAD  
A
SOURCE  
643015 TA01a  
DIFFERENTIAL  
DIFFERENTIAL  
0
200  
400  
600  
800 1000 1200  
FREQUENCY (MHz)  
643015 TA01b  
643015f  
1

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