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AN-2195 Datasheet(PDF) 1 Page - Texas Instruments

Part No. AN-2195
Description  AN-2195 Driving High Speed ADCs with the LMH6521 DVGA for High IF AC-Coupled Applications
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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AN-2195 Datasheet(HTML) 1 Page - Texas Instruments

   
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Application Report
SNOA569A – November 2011 – Revised April 2013
AN-2195 Driving High Speed ADCs with the LMH6521
DVGA for High IF AC-Coupled Applications
.....................................................................................................................................................
ABSTRACT
This application report discusses driving high speed ADCs with the Texas Instruments LMH6521 DVGA
for high IF AC-coupled applications.
Contents
1
Introduction
.................................................................................................................. 2
2
Circuit Description
........................................................................................................... 2
3
Tapped Inductor Band-pass Filter
........................................................................................ 2
4
IF-Sampling Frequency Plan
.............................................................................................. 4
5
System Performance
....................................................................................................... 4
6
Optimal Performance
....................................................................................................... 5
List of Figures
1
Tapped-L Band-pass Filter For fc = 192 MHz with a 20 MHz Bandwidth Designed for 100
Ω Impedance
..... 2
2
Single-Ended Tapped-L Band-pass Filter Segments
.................................................................. 3
3
192 MHz Tapped-L Filter Profile
.......................................................................................... 3
4
Using Impedance Transform to Realize Voltage Gain
................................................................. 4
5
SFDR Performance vs. Input Signal Frequency
........................................................................ 4
6
SNR Performance vs. Input Signal Frequency
.......................................................................... 4
7
Output Inductors at 90 Degrees
........................................................................................... 5
List of Tables
1
SNR and SFDR Results
................................................................................................... 5
All trademarks are the property of their respective owners.
1
SNOA569A – November 2011 – Revised April 2013
AN-2195 Driving High Speed ADCs With the LMH6521 DVGA for High IF
AC-Coupled Applications
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Copyright © 2011–2013, Texas Instruments Incorporated


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