Texas Instruments LMX2485E-EVM, Руководство пользователя

Страница: 2 / 24

Setup
www.ti.com
2 SNAU114D – March 2006 – Revised June 2016
Submit Documentation Feedback
Copyright © 2006–2016, Texas Instruments Incorporated
Using the LMX2485E & LMX2487E Evaluation Board
Table 1. Evaluation Device and Package Configurations
Device RF PLL Frequency Range Evaluation Vehicle
LMX2485E 50 to 3000 MHz
LMX2485E EVAL
LMX2485 500 to 3000 MHz
LMX2486 1000 to 4500 MHz
LMX2487E EVAL LMX2487 1000 to 6000 MHz
LMX2487E 3000 to 7500 MHz
The EVM contains one Frequency Synthesizer (See Table 1 ).
Table 2. Evaluation Device and Package Configurations
Board Version Designator IC Package VCO Model
VCO Frequency
Range
LMX2485E-EVM U1 LMX2485E QFN24
Crystek CVCO55CL 60-80 MHz
Crystem CVCO55BE-
1800-2200
1800-2200 MHz
LMX2487E-EVM U1 LMX2487E QFN24 Crystek CVCO44BH 4100-4300 MHz
Although the devices are very broadband, the VCO is ultimately what limits the frequency range of the
evaluation board. These VCOs were chosen primarily availability, standard footprint, and for lower risk of
being obsoleted.
WARNING! Due to availability issues, the LMX2485E-EVM has two different suppliers for VCO. Be
sure to check the VCO model number to know what VCO model you have!
1 Setup
Input/Output Connector Description.
Figure 1. Evaluation Board Setup