Texas Instruments ADC364 EVM Series User manual

User’s Guide
ADC364xEVM Evaluation Module
Abstract
This user’s guide describes the characteristics, operation, and use of the ADC364x evaluation module (EVM).
This user's guide discusses how to set up and configure the software and hardware, and reviews various
aspects of the program operation. Throughout this document, the terms evaluation board, evaluation module,
and EVM are synonymous with the ADC364xEVM. In the following sections of this document, the ADC364x
evaluation board is referred to as the EVM and the ADC364x device is referred to as the ADC device.
Table of Contents
Abstract...................................................................................................................................................................................... 1
1 Introduction.............................................................................................................................................................................2
2 Equipment............................................................................................................................................................................... 3
2.1 Evaluation Board Feature Identification Summary.............................................................................................................3
2.2 Required Equipment.......................................................................................................................................................... 4
3 Setup Procedure..................................................................................................................................................................... 5
3.1 Install High-Speed Data Converter (HSDC) Pro Software................................................................................................. 5
3.2 Install ADC35XXEVM GUI 1.0 Software............................................................................................................................ 5
3.3 Connect the ADC EVM and TSW1400EVM.......................................................................................................................5
3.4 Connect the Power Supply and Mini-USB Connections.................................................................................................... 6
4 Device Configuration..............................................................................................................................................................7
4.1 Bypass Mode..................................................................................................................................................................... 8
4.2 Real Decimation Mode.....................................................................................................................................................12
4.3 Complex Decimation Mode.............................................................................................................................................. 16
5 External Clocking Hardware Setup..................................................................................................................................... 20
5.1 Hardware Modfications.................................................................................................................................................... 20
5.2 Hardware Setup: Real Decimation 16x Mode.................................................................................................................. 24
5.3 External Clock: ADC35XX GUI Real Decimation Mode ..................................................................................................24
6 ADC364xEVM Power Monitor.............................................................................................................................................. 25
7 Test Pattern........................................................................................................................................................................... 26
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1 Introduction
The ADC364xEVM is an evaluation board used to evaluate the ADC364x analog-to-digital converter (ADC) from
Texas Instruments. The ADC364xEVM is a dual-channel, 14-bit ADC that can operate up to 125 Mega-samples
per second (MSPS). The ADC364x uses a parallel or serial CMOS interface to output the digital data. The
serialized CMOS interface supports output rates to 250 Mbps which translates to ~ 30 MSPS (2-wire) to ~ 10
MSPS (0.5-wire) output rates after complex decimation. Hence the ADC3643 can be operated in 'oversampling +
decimating' mode using the internal decimation filter in order to improve the dynamic range and relax external
anti-aliasing filter.
The ADC364xEVM is equipped with the following features:
• Transformer and FDA coupled analog inputs
• CDCE6214 clocking solution for on-board clocking
• Transformer coupled or single-ended clock inputs
• INA226 current shunt monitors for evaluating power consumption
• Power over mini-USB
• FMC connector
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2 Equipment
This hardware setup procedure is written with the intent to use the onboard CDC clocking option, and therefore
only requires an analog input for evaluation. Using an external sampling clock(s) is an option, and instructions
are provided toward the end of this document.
2.1 Evaluation Board Feature Identification Summary
Figure 2-1. ADC364xEVM Feature Identification
Ensure that jumper J8 is shunted in the 2-3 position. This allows 5 V to be supplied to the ADC364xEVM through
the mini-USB connector.
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If an external 5-V supply is desired, J8 must be shunted in the 1-2 position, and the external 5 V can be
connected to the test point labeled "+5 EXT".
Figure 2-2. CMOS FPGA Interposer Card
2.2 Required Equipment
• The following equipment is included in the EVM evaluation kit:
– ADC364x Evaluation board (EVM)
– CMOS FPGA Interposer Card
– Power supply clips for Interposer Card
– Mini-USB cable
The following equipment is not included in the EVM evaluation kit, but is required for evaluation of this EVM:
• TSW1400EVM data capture board and related items
•HSDC Pro software
• PC running Microsoft® Windows® 7, or 10
• One low-noise signal generators for the analog input (If using external clock option, additional signal
generator is required).
TI recommends the following generators:
• Rohde & Schwarz SMA100A
• Rohde & Schwarz SMA100B
Bandpass filter for the analog input signal. The following recommended bandpass filter will have:
• Bandpass filter, greater than or equal to 60-dB harmonic attenuation, less than or equal to 5% bandwidth,
greater than 18-dBm power, less than 5-dB insertion loss
• Signal-path cables, SMA
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3 Setup Procedure
This Setup Procedure will detail how to setup the software GUIs and EVM hardware required for evaluation
using the onboard clock (CDCE6214).
3.1 Install High-Speed Data Converter (HSDC) Pro Software
Download the most recent version of the HSDC Pro software. Launch the executable, and accept the default
installation options.
Download and install the HSDC Pro Patch. This patch copies all the INI files required to the HSDC pro directory.
3.2 Install ADC35XXEVM GUI 1.0 Software
Download the ADC35XXEVM GUI 1.0 software from the EVM tool folder at ADC3643EVM.
Extract and run the executable file, and accept the default installation options.
3.3 Connect the ADC EVM and TSW1400EVM
Connect the ADC364xEVM FMC connector to J1 of the FPGA Interposer Card.
Connect J2 of the FPGA Interposer Card to J1 of the TSW1400EVM.
Figure 3-1. ADC3660EVM Full Setup
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3.4 Connect the Power Supply and Mini-USB Connections
Use the following steps to connect the power supply and mini-USB connections:
1. Connect 3.3 VDC to TP2 of the FPGA Interposer card. Provide power supply ground to TP1, as required. J10
of the TSW1400EVM can be used to source this +3.3 VDC.
2. Connect the power cable to the TSW1400EVM at 5-V (minimum 3 A) power supply. Place the power switch
(SW7) to the "On" position.
3. Connect the mini-USB cable to the TSW1400EVM (J2).
4. Connect the mini-USB cable to the ADC3643EVM (J14).
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4 Device Configuration
A hardware reset should be performed before programming the ADC by toggling the push button switch S1.
A software reset may be performed at any time to reset the ADC registers to their default state.
Figure 4-1. ADC35xx Software Reset
Replace this image
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4.1 Bypass Mode
The following steps show how to configure the ADC3643EVM in Bypass mode.
4.1.1 ADC35XX GUI: Bypass Mode (DDR) Configuration
By default, the ADC3643EVM is preconfigured for 14bit, DDR mode. When using this mode, the only required
step in the ADC35XX GUI is to configure the onboard clock in order to select the desired sampling rate (10MHz,
25 MHz or 65 MHz).
Note: The following steps also apply to the ADC3642EVM and ADC3644EVM. However, the on board clocking
device limits the ADC3642EVM to 25 MHz and 10 MHz clock frequencies, and the ADC3644EVM is limited to
125 MHz and 65 MHz. If different sampling frequencies are required, please connect an external clock source.
After launching the ADC35xx GUI perform the following steps:
• Under Resolution, select "14 bit".
• Select "65M" for Fs (sample clock).
• Ensure that "CDC Enable" is green (enabled).
• Click "Configure CDC" button.
• Click "Configure" button.
Figure 4-2. ADC35xx GUI settings for Bypass Mode
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4.1.2 HSDC Pro: Bypass Mode
After pressing "Configure" within the ADC35xx GUI perform the following steps to setup HSDC pro:
• Launch HSDC Pro
• Select the TSW1400 and click OK
Figure 4-3. HSDC Pro: Connect to TSW1400
• Click OK for the no firmware loaded prompt.
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• Select “ADC3643_7W_14bit_DDR" to load firmware, and click Yes.
Figure 4-4. HSDC Pro ini file selection for Bypass Mode
• Enter 65M within the box that says “ADC Output Data Rate”
• Enter the input frequency of the input signal in the box that says "ADC Input Target Frequency" (5 MHz used
in this example).
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• Press Capture
Figure 4-5. Bypass Mode Capture
• The analog input signal power may need to be adjusted to reach -1 dBFS.
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4.2 Real Decimation Mode
The following software configuration steps will program the ADC364xEVM in Real Decimation mode.
4.2.1 ADC35XX GUI: Real Decimation Mode Configuration
After launching the ADC35xx GUI perform the following steps:
• Under Resolution, select 16 bit.
• Under DDC, Select Real.
• For Decimation Factor, select 16.
• For Fs(MHz), select 60M.
• Click Configure CDC
• Click Configure
Figure 4-6. ADC35xx GUI settings for Real Decimation Mode
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4.2.2 HSDC Pro: Real Decimation Mode
After pressing "Configure" within the ADC35xx GUI perform the following steps to setup HSDC pro:
• Launch HSDC Pro
• Select the TSW1400 and click OK
• Click OK for the no firmware loaded prompt.
• Select “ADC3643_2W_14bit_CMOS” to load firmware, and click Yes.
Figure 4-7. Real Decimation HSDC Pro INI File
•
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Click on the cog next to “ADC Output Data Rate”.
Figure 4-8. Real Decimation Mode HSDC Pro Parameters
•
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In the new dialogue box, enter 60M in “ADC Sampling Rate”
• Enter 1M in “ADC Input Frequency”
• Enter 16 in “Decimation”.
• Click Ok.
• Click the Capture button
Figure 4-9. HSDC Pro Cog Wheel
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4.3 Complex Decimation Mode
The following software configuration steps will program the ADC364xEVM in Complex Decimation mode (16x)
with a 10 MHz analog input and 9.9 MHz NCO.
4.3.1 ADC35XX GUI: Complex Decimation Configuration
After launching the ADC35xxEVM GUI perform the following steps:
• Under Resolution, select 14 bit.
• Under DDC, Select Complex.
• For Decimation Factor, select 16.
• For Fs(MHz), select 60M.
• Under "FNCO A (MHz)", enter "9.9" in the field. This field will then calculate to the nearest valid NCO value,
and will auto-calculate the correct register values in the field next to it.
• Click Configure CDC
Figure 4-10. ADC35xx GUI settings for Complex Decimation Mode
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4.3.2 HSDC PRO: Complex Decimation Mode
After pressing "Configure" within the ADC35xx GUI perform the following steps to setup HSDC pro:
• Launch HSDC Pro.
• Select the TSW1400 and click "OK".
• Click OK for the "no firmware loaded" prompt.
• Select “ADC3643_2W_14bit_CMOS_Complex” to load firmware, and click Yes.
Figure 4-11. Complex Decimation HSDC Pro INI file
•
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Click on the cog next to “ADC Output Data Rate”.
• In the new dialogue box, check the "Enable?" box.
• Under “ADC Sampling Rate”, enter "60M"
• Under “ADC Input Frequency”, enter "10M"
• Under "NCO", enter "9.9M"
• Under “Decimation”, enter "16".
• Click "OK".
Figure 4-12. Complex Decimation Mode HSDC Pro Parameters
• Select "Complex FFT"
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• Press "Capture"
Figure 4-13. Complex Mode Capture
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5 External Clocking Hardware Setup
The onboard CDC is useful for general evaluation and relieves the user requirment of needing additional signal
generators. The following section shows how to configure and program the ADC364xEVM for external clock
operation for Real Decimation Mode. This mode requires two external clock sources (must be frequency locked).
If Bypass Mode or Complex Decimation Mode are to be used with an external clock source(s), use the steps
outlined with the onboard clock for Bypass Mode and Complex Decimation mode for guidance on how the
ADC35xx GUI should be configured (with the exception of using external clocks).
5.1 Hardware Modfications
The following hardware modifications must be made in order to operate the ADC364xEVM using an external
sample and (if required) data clock .
External Sample Clock Modification:
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