Hardware And Evm Setup For Testing Ads5296A; External Connections - Texas Instruments ADS5296A User Manual

Hardware and EVM Setup for Testing ADS5296A

3 Hardware and EVM Setup for Testing ADS5296A
This section outlines the external connections required for ADS5296A EVM as well as the default
configuration of the EVM's 3-pin headers and 0-Ω jumper resistors with an explanation of configuration
options.
3.1

External Connections

The connections shown in
interface between the ADS5296A EVM and the TSW1400 EVM can be performed using a RAMP function
generated within the ADS5296A device in lieu of the signal source listed in item 7 below. Also, an on-
board 80-MHz crystal oscillator (XTAL) can provide the ADC sampling clock in lieu of the signal source
listed in item 6 below. This configuration is only recommended for testing the RAMP function as low phase
noise filtered signal sources must be provided to both the ADC clock input and the ADC analog inputs for
measuring device performance).
1. Mate the TSW1400 EVM at connector J3 to the ADS5296A EVM at connector J8 through the high
speed ADC interface connector.
2. Connect the DC +5-V output of the provided AC-to-DC power supply to J12 (+5V_IN) of the TSW1400
EVM and the input of the power supply cable to a 110–230 VAC source.
3. Connect +5-V DC power supply leads to connectors J1 (VCC) and J2 (GND) of the ADS5296A EVM.
4. Connect the USB cable from PC to J13 (USB) of ADS5296A EVM
5. Connect the USB cable from PC to J5 (USB_IF) of the TSW1400 EVM. (Note: it is recommended that
the PC USB port be able to support USB2.0. If unsure, always chose the USB ports at the back of the
PC chassis over ones located on the front or sides.)
6. Supply an ADC clock signal to SMA J31 (CLK_XFMR) of the ADS5296A EVM (that is, +5 dBm,
80 MHz) but turn off the source as the on board 80-MHz crystal oscillator (XTAL) will be used as a
clock source for the initial testing.
7. Supply an analog input signal to SMA J15 (CH5_XFMR) of the ADS5296A EVM (that is, +10 dBm,
10 MHz).
14
ADS5296A, 4-Channel 200-MSPS, and 8-Channel 80-MSPS, Analog-to-
Digital Converter Evaluation Module
Figure 18 should be made for proper hardware setup (Note: Testing the LVDS
Figure 18. TSW1400 and ADS5296A EVM Setup
Copyright © 2013, Texas Instruments Incorporated
www.ti.com
SLAU537 – October 2013
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