Quick Start
5
SLAU671A – October 2016 – Revised March 2017
Copyright © 2016–2017, Texas Instruments Incorporated
DAC38RF8xEVM
2
Quick Start
The following examples use an external clock and the on-chip PLL to evaluate the performance of the
DAC38RF8xEVM. The frequency of the clock is arbitrarily selected as 6144 Msps but the procedure
outlined is applicable to any external clock frequency and any supported on-chip PLL frequency.
The external clock path includes a balun for single-ended to differential conversion.
shows the
insertion loss, amplitude, and phase un-balance of this balun.
2.1
TSW14J56 and DAC38RF8xEVM
This section covers details on the TSW14J56 and DAC38RF8xEVM.
1. Make sure both boards are not powered and not connected to the USB port of the PC.
2. Connect the FMC connector of TSW14J56 EVM (J4) to FMC connector of DAC38RF8xEVM (J20).
2.1.1
TSW14J56
1. Connect a 5-V power supply to connector J11 (+5 V IN).
2. Connect a USB cable to the USB connector (J9).
3. Flip the power switch (SW6) to the “ON” position.
2.1.2
DAC38RF8xEVM Configuration With Direct External Clock(CMODE1)
Skip this section if the on-chip PLL is used as the DAC clock source.
NOTE:
Shunt pin 1 and pin 2 of the 2-pin jumper labeled JP10 to enable external clock mode. This
is shown in
. Other hardware changes may be required depending on the external
clocking mode. These changes are described in
.
Figure 2. Shunt Pin 1 and Pin 2 of JP10 Jumper Enabling External Clock Mode
