Texas Instruments ADC08L060EVM User manual

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ADC08L060 Evaluation Module
User's Guide
SLAU712–February 2017
ADC08L060 Evaluation Module
This user's guide describes the function and use of the ADC08L060 evaluation module (EVM). Included in
this document are a quick-start guide, instructions for optimizing evaluation results, jumper and connector
descriptions, software description, and alternate hardware configurations.
Contents
1 Overview...................................................................................................................... 2
1.1 Required Hardware................................................................................................. 2
1.2 Required Software.................................................................................................. 2
1.3 Evaluation Board Feature Identification Summary ............................................................. 3
1.4 References .......................................................................................................... 3
2 Quick-Start Guide............................................................................................................ 4
2.1 Software Installation................................................................................................ 4
2.2 Hardware Setup Procedure ....................................................................................... 5
2.3 Software Setup Procedure......................................................................................... 6
2.4 Quick-Start Troubleshooting....................................................................................... 8
3 Optimizing Evaluation Results ............................................................................................. 9
3.1 Clocking Optimization .............................................................................................. 9
3.2 Coherent Input Source............................................................................................. 9
3.3 HSDC Pro Settings................................................................................................. 9
4 Alternate Hardware Configurations ...................................................................................... 10
4.1 Clocking Options .................................................................................................. 10
4.2 Voltage Reference Options ...................................................................................... 10
Appendix A Jumper and Connector Descriptions............................................................................ 11
List of Figures
1 EVM Feature Locations..................................................................................................... 3
2 Quick-Start Test Setup...................................................................................................... 5
3 HSDC Pro GUI Main Panel................................................................................................. 6
4 Data Capture Results From Quick-Start Procedure..................................................................... 7
List of Tables
1 Quick-Start Performance Measurements................................................................................. 7
2 Troubleshooting Tips........................................................................................................ 8
3 HSDC Pro Settings to Optimize Results.................................................................................. 9
4 Jumper Descriptions and Default Settings.............................................................................. 11
5 Connector Descriptions.................................................................................................... 11
Trademarks
Microsoft, Windows are registered trademarks of Microsoft Corporation.

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ADC08L060 Evaluation Module
1 Overview
The ADC08L060EVM is an evaluation module (EVM) designed to evaluate the ADC08L060. The EVM
provides simple and minimal external components to minimize system cost and power consumption.
The following features apply to this EVM:
• 8-bit, low-cost, low-power, high-speed, CMOS interface ADC08L060
• Onboard 60-MHz crystal oscillator for sample clocking, with an external clock option
• TPS7A47 user-programmable RF LDO voltage regulator
• CDCV304 high-performance, low-skew, PCI_X-compliant clock buffer
The ADC08L060EVM is designed to work seamlessly with the TSW1400EVM, TI’s CMOS and LVDS
pattern generator and data-capture board, through the High-Speed Data Converter Pro Graphical User
Interface (HSDC Pro GUI) software tool for high-speed data converter evaluation.
1.1 Required Hardware
The following equipment is included in the EVM evaluation kit:
• ADC08L060EVM
• Standard banana jack power supply cables
The following list of equipment are items that are not included in the EVM evaluation kit but are items
required for evaluation of this product in order to achieve the best performance:
•TSW1400EVM Data Capture Board, 5-V DC cable connector, and mini-USB cable
• Computer running Microsoft®Windows®8, Windows 7, or Windows XP
• One low-noise signal generator. Recommendations:
– RF generator, > +17 dBm, < –40 dBc harmonics, < 500 fsec jitter 20 kHz–20 MHz, 1-MHz to 2-GHz
frequency range
– Examples: TSW2170EVM, HP HP8644B, Rohde & Schwarz SMA100A
• DC power supply. Recommendations:
– DC Power Supply, 0-6 VDC, > 3 A
– Examples: Agilent E363A or equivalent
• Bandpass filter for desired analog input. Recommendations:
– Filter, ≥60-dB harmonic attenuation, ≤5% bandwidth, > +18-dBm power, < 5-dB insertion loss
– Examples: Trilithic 5VH-series Tunable BPF, K&L BT-series Tunable BPF, TTE KC6 or KC7-series
Fixed BPF
• Signal path cables, SMA or BNC with BNC-to-SMA adapters
1.2 Required Software
The following software is required to operate the TSW1400EVM and is available online. See References,
Section 1.4 for links.
• High-Speed Data Converter Pro software

Pin Connector
(CMOS interface)
+5-V Input Power and GND
External ADC Clock input
Analog Input ADC
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ADC08L060 Evaluation Module
1.3 Evaluation Board Feature Identification Summary
The EVM features are labeled in Figure 1.
Figure 1. EVM Feature Locations
1.4 References
• ADC08L060 data sheet (SNAS167), available at www.ti.com/product/ADC08L060
• TSW1400EVM User’s Guide (SLWU079), available at www.ti.com/tool/TSW1400EVM
• High-Speed Data Converter Pro software (SLWC107) and User's Guide (SLWU087), available at
www.ti.com/tool/dataconverterpro-sw
NOTE: Schematics, layout, and BOM are available on the ADC08L060EVM product page on
www.ti.com.

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ADC08L060 Evaluation Module
2 Quick-Start Guide
This section guides the user through the EVM test procedure to obtain a valid data capture from the
ADC08L060EVM using the TSW1400EVM capture card. This should be the starting point for all
evaluations.
2.1 Software Installation
The proper software must be installed before beginning evaluation. See Section 1.2 for a list of the
required software. The References section of this document contains links to find the software on the TI
website.
Important: The software must be installed before connecting the ADC08L060EVM and TSW1400EVM to
the computer for the first time.
2.1.1 High-Speed Data Converter Pro GUI Installation
The High-Speed Data Converter Pro (HSDC Pro) is used to control the TSW1400EVM and analyze the
captured data. See the HSDC Pro user’s guide (SLWU087) for more information.
1. Download HSDC Pro from the TI website. The References section of this document contains the link to
find the software on the TI website.
2. Extract the files from the zip file.
3. Run setup.exe and follow the installation prompts.

PC Computer
Running HSDC Pro
ADC08L060
EVM TSW1400
EVM
Power
Switch
Mini-USB to
USB-A Cable
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Analog Input
Low Noise
Signal Generator
10-MHz
Bandpass Filter
Low Noise
Power Supply
+5VDC @3A
10.1 MHz
Vin = -1 dBFS
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2.2 Hardware Setup Procedure
A typical test setup using the ADC08L060EVM and TSW1400EVM is shown in Figure 2. This is the test
setup used for the quick-start procedure. The rest of this section describes the hardware setup steps.
Figure 2. Quick-Start Test Setup
2.2.1 TSW1400EVM Setup
First, set up the TSW1400EVM using the following steps:
1. Connect the ADC08L060EVM to the TSW1400EVM connecting pin 1 of the CMOS_INTERFACE (J1)
to pin 1 of ADC08L060EVM output data (J1).
2. Connect the power cable to connector J12 (5 V IN) to the TSW1400EVM.
3. Connect the mini-USB cable to the USB connector (J5).
4. Turn on the power supply. Flip the power switch (SW7) to the ON position. The board should draw
around 0.5 A after power up. This will increase to around 1.7 A when loaded with firmware.

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2.2.2 ADC08L060EVM Setup
Next, setup the ADC08L060EVM using the following:
1. Connect the banana jack power-supply cables to the EVM. Connect the red wire to 5 VDC ±0.1 VDC
of a power supply rated for at least 3 A to connector J4. Connect the black wire to J5 (GND) of the
power supply.
2. Turn on the power supply. The power draw should be around 0.6 A.
3. Set the analog input signal generator for 10.1-MHz, –1 dB from full scale.
4. Place a 10-MHz bandpass filter at the output of the analog signal generator to remove noise and
harmonics from the signal generator.
5. Connect the analog input signal generator to the EVM though SMA connector INPUT (J6) and provide
a 10.1-MHz signal.
2.3 Software Setup Procedure
The software can be opened and configured once the hardware is properly set up.
2.3.1 HSDC Pro GUI Configuration
1. Open High Speed Data Converter Pro by going to Start Menu →All Programs →Texas Instruments →
High Speed Data Converter Pro. The GUI main page looks as shown in Figure 3.
Figure 3. HSDC Pro GUI Main Panel
2. When prompted to select the capture board, select the TSW1400 whose serial number corresponds to
the serial number on the TSW1400EVM and click OK. This popup can be accessed through the
Instrument Options menu.
3. If no firmware is currently loaded, there is a message indicating this. Click on OK.
4. Verify the ADC tab at the top of the GUI is selected.
5. Use the Select ADC drop-down menu at the top left corner to select ADC08060_cmos.
6. When prompted to update the firmware for the ADC, click Yes and wait for the firmware to download to
the TSW1400. This takes a couple of seconds.
7. Enter “60M” into the ADC Output Data Rate field at the bottom left corner then click outside this box or
press Return on the PC keyboard.
8. Click Capture in HSDC Pro to capture data from the ADC.

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9. The results from the captured data of Channel 1 should look like Figure 4 and the performance should
be similar to Table 1. If this result is not achieved, then see the Quick Start Troubleshooting section of
this document.
Figure 4. Data Capture Results From Quick-Start Procedure
Table 1. Quick-Start Performance Measurements
Result Measured Value Units
SNR 47 dBFS
SFDR 62 dBFS

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2.4 Quick-Start Troubleshooting
Use Table 2 to assist with problems that may have occurred during the quick-start procedure.
Table 2. Troubleshooting Tips
Issue Troubleshooting Tips
General problems Verify the test setup shown in Section 2 and repeat the setup procedure as described in
this document.
Check power supplies to the EVMs. Verify that the power switches are in the ON position
and supplies are drawing the appropriate current.
Check signal and clock connections to the EVM.
Check that all boards are properly connected together.
Try power-cycling the external power supply to the EVM and reprogram the ADC devices.
TSW1400 LEDs are not correct:
D2 – D9 OFF Verify the settings of the configuration switches on the TSW1400EVM.
Verify that the EVM configuration GUI is communicating with the USB and that the
configuration procedure has been followed.
Try capturing data in HSDC Pro to force an LED status update.
HSDC Pro software is not
capturing good data or analysis
results are incorrect.
Verify that the TSW1400EVM is properly connected to the PC with a mini-USB cable and
that the board serial number is properly identified by the HSDC Pro software.
Check that the proper ADC device is selected. In default conditions, ADC08L060_cmos
should be selected.
Check that the analysis parameters are properly configured.
Check that the fundamental power is no larger than –1 dBFs.
HSDC Pro software gives a time-
out error when capturing data Restart HSDC Pro and reload the firmware.
Verify that the ADC sampling rate is correct in the HSDC Pro software.
Sub-optimal measured
performance Measure test points to verify operating voltage ranges.
Verify the jumper configurations are in default locations.
Verify that filters are used in the clock and input signal paths and that low-noise signal
sources are used.

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3 Optimizing Evaluation Results
This section assists the user in optimizing the performance during evaluation of the product.
3.1 Clocking Optimization
The sampling clock provided to the ADC needs to have very low phase noise to achieve optimal results.
The default EVM configuration uses a crystal oscillator to generate the sampling clock. Another option to
improve the clock noise performance is bypassing the onboard clock in favor of an external clock. The
clock must have very low noise and must use an external narrow pass-band filter to achieve optimal noise
performance. The clock amplitude must be within the data sheet limits. See Section 4 for more information
regarding this setup.
3.2 Coherent Input Source
ARectangular window function can be applied to the captured data when the sample rate and the input
frequency are set precisely to capture an integer number of cycles of the input frequency (sometimes
called coherent frequency). This may yield better SNR results. The clock and analog inputs must be
frequency locked (such as through 10-MHz references) in order to achieve coherency.
3.3 HSDC Pro Settings
HSDC Pro has some settings that can help improve the performance measurements. These are
highlighted in Table 3.
Table 3. HSDC Pro Settings to Optimize Results
HSDC Pro Feature Description
Analysis Window (Samples) Selects the number of samples to include in the selected test analysis. Collect more data to
improve frequency resolution of Fast-Fourier Transform (FFT) analysis. If more than 65,536
samples are required, increase the setting in the Data Capture Options to match this value.
Data Windowing Function Select the desired windowing function applied to the data for FFT analysis. Select Blackman when
sampling a non-coherent input signal or Rectangle when sampling a coherent input signal.
Test Options →Notch
Frequency Bins Select bins to be removed from the spectrum and back-filled with the average noise level. May also customize which Harmonics and Spurs are considered in SNR and THD calculations and
select the method for calculating spur power.
Test Options →Bandwidth
Integration Markers Enable markers to narrow the Single-Tone FFT test analysis to a specific bandwidth.
Data Capture Options →
Capture Options Configure the number of contiguous samples per capture (capture depth). May also enable Continuous Capture and FFT Averaging.

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4 Alternate Hardware Configurations
This section describes alternate hardware configurations in order to achieve better results or to more
closely mimic the system configuration.
4.1 Clocking Options
The default clocking mode uses a crystal clock oscillator to generate the ADC sampling clock and FPGA
clocks. An alternative option is described in the following section.
4.1.1 External ADC Sampling Clock
An external clock can be used as the sampling clock for the ADC. For this option, the oscillator must be
bypassed with a jumper (JP2) by changing its position to SHUNT 2–3. Provide a filtered, low-noise 60-
MHz signal from an RF generator to the SMA connection on the EVM (J3).
4.2 Voltage Reference Options
The default configurations uses a LM8272 rail-to-rail precision op amp to drive the reference voltage. By
default, the top reference voltage is set to 1.9 V and the bottom voltage is set to 0.3 V. Alternative options
are described in the follow sections.
4.2.1 External Voltage Reference
An external voltage reference can be used to supply the reference voltage to the ADC. For this option,
jumper VRT (JP9) and VRB (JP8) must be pulled out and left OPEN. Apply a top voltage reference at the
test point VRTP (TP5) and bottom reference at VRBP (TP6). If the desired voltage references are 3 V and
GND, change jumpers JP9 and JP8 to SHUNT 2-3.
4.2.2 Divider Resistor Modification
If the LM8272 is desired to drive the reference voltages, but at a different range, the divider resistors (R1
and R3) can be changed to suit the reference voltage needed. R1 and R3 are larger for easy soldering
modifications.