Basic Test Procedure
10
SLAU485A – January 2013 – Revised April 2016
Copyright © 2013–2016, Texas Instruments Incorporated
ADS4449 EVM User Guide
3.2
Test Set-up Connection
1. Connect the J5 connector of the EVM to the J3 connector of TSW1400 EVM
2. Connect 5 V to the J12 supply input connector of the TSW1400 and 6 V to the J1 supply input
connector of the EVM
3. Provide a sample clock at J10 SMA connector of the EVM
4. Provide a sine wave for the analog input at J6, J8, J11, or J13 SMA connectors of the EVM
5. Connect a USB cable from the TSW1400 to the programming computer
6. Connect a USB cable from the EVM to the computer
7. Ensure the initial jumper settings of ADS4449, as per
(if default usage of the ADS4449 is
desired)
3.3
ADS4449 Software Quick Start Guide
introduced the front panel of the ADS4449 SPI GUI. This section covers the initial use of the SPI
GUI necessary for most evaluations of the ADS4449.
1. Press the
Reset USB Port
button if the USB connection has been disrupted since last use, or if an
error message pops up warning that the USB connection is not valid.
2. Use the mouse to select the
reset
position of the reset switch. This switch is self-clearing.
3. Press
Send All
to send all the register settings.
4. From this point, select digital functions as desired such as High Frequency Mode, High SNR Mode, or
set test pattern modes if desired. All register bits listed in the register map of the ADS4449 data sheet
have a
switch
on the front panel of the SPI GUI for easy configuration of the ADS4449.
Note that any greyed-out front panel switches are unavailable for use because they have a dependency
upon other switch settings, as indicated in the ADS4449 datasheet. For example, the Channel A Gain
selection is unavailable because the default state of the Channel A Gain Enable switch is off. Select the
Channel A Gain Enable switch, toggling the switch to the enabled state, and then the Channel A Gain
selection becomes available for use.
