Texas Instruments LMX2492, User Manual, Page: 4 / 26

Direct VCO Output (~10 GHz)
VCO/2 Output (~5 GHz)
5V Supply
Optional:
3V Supply
Optional:
VCO/4 Output
Optional:
Single Ended or
Differential
Reference Signal
USB2ANY
Connector
Chapter 1
SNAU160C – March 2014 – Revised November 2014
Evaluation Board Setup
1.1 Evaluation Board Setup Diagram and Connections
Figure 1-1. Evaluation Board Connection Diagram
1.1.1 VCO Outputs
The LMX2492 operates at 10 GHz, but this can be a problem for some test equipment. If it is, use the
VCO/2 output or the VCO/4 output. The VCO/4 output is powered down by default, but can be configured
if necessary.
1.1.2 VCC 5V
The board operates on 5V and regulates this down to 3.3 V for the PLL. The board can be configured to
operate wit separate
1.1.3 VCC 3P3V
This is actually supplied from the regular off the 5V supply, but can also be run from a 3.3 V supply if the
regulator is disconnected and a few resistors are changed.
1.1.4 USB2ANY Connector
Connect the board to the computer using the USB2ANY connector, which comes supplied with the kit.
1.1.5 OSCin/OSCin*
The board has an on board XO, but the OSCin pins can be run either single-ended or differentially.
4 Evaluation Board Setup SNAU160C – March 2014 – Revised November 2014
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