Texas Instruments ADS5296 User manual

User's Guide
SLAU491–May 2013
ADS5296, 4-Channel 200-MSPS, and 8-Channel 80-MSPS,
Analog-to-Digital Converter Evaluation Module
This user’s guide gives a general overview of the ADS5296 evaluation module (EVM) and provides a
general description of the features and functions to be considered while using this module. This manual is
applicable to the ADS5296 analog-to-digital converters (ADC). The ADS5296 EVM provides a platform for
evaluating the ADC under various signal, clock, reference, and ADC output formats.
Contents
1 Quick View of Evaluation Setup ........................................................................................... 4
2 GUI Software Installation .................................................................................................. 5
2.1 TSW1400 EVM GUI Installation (High Speed Data Converter Pro (HSDCpro)) .......................... 5
2.2 ADS5296 EVM GUI Installation ................................................................................ 11
3 Hardware and EVM Setup for Testing ADS5296 ..................................................................... 18
3.1 External Connections ............................................................................................ 18
3.2 ADS5296 EVM Header Configuration ......................................................................... 19
3.3 ADS5296 EVM 0-ΩJumper Configuration .................................................................... 21
4 Testing ADS5296 EVM ................................................................................................... 24
4.1 TSW1400 and ADS5296 GUI Setup ........................................................................... 24
4.2 Capturing a RAMP Test Pattern ................................................................................ 29
4.3 Capturing Sinusoidal Input in Octal Non-Interleaving Mode ................................................ 34
4.4 Capturing Sinusoidal Input in Quad Interleaving Mode ...................................................... 45
5 ADS5296 GUI in Detail ................................................................................................... 50
5.1 Read Me First Tab ............................................................................................... 52
5.2 Top Level Tab ..................................................................................................... 53
5.3 Test Pattern Tab .................................................................................................. 57
5.4 Digital Signal Processing Tab ................................................................................... 59
5.5 Channel Filter Tab ................................................................................................ 61
6 ADS5296 EVM Schematics .............................................................................................. 67
7 ADS5296 EVM Bill of Materials .......................................................................................... 76
8 ADS5296 EVM Layout .................................................................................................... 78
List of Figures
1 Evaluation Setup............................................................................................................ 4
2 HSDCpro Install (a)......................................................................................................... 5
3 HSDCpro Install (b)......................................................................................................... 6
4 HSDCpro Install (c) ......................................................................................................... 7
5 HSDCpro Install (d)......................................................................................................... 8
6 HSDCpro Install (e)......................................................................................................... 9
7 HSDCpro Install (f) ........................................................................................................ 10
8 HSDCpro Install (g) ....................................................................................................... 10
9 HSDCpro Install (h) ....................................................................................................... 11
10 HSDCpro Install (i) ........................................................................................................ 11
11 ADS5296 GUI Install (a).................................................................................................. 12
12 ADS5296 GUI Install (b).................................................................................................. 13
13 ADS5296 GUI Install (c).................................................................................................. 14
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14 ADS5296 GUI Install (d).................................................................................................. 15
15 ADS5296 GUI Install (e).................................................................................................. 16
16 ADS5296 GUI Install (f)................................................................................................... 17
17 ADS5296 GUI Install (g).................................................................................................. 18
18 TSW1400 and ADS5296 Setup ......................................................................................... 19
19 ADS5296 EVM Default Header Configuration......................................................................... 21
20 ADS5296 EVM Octal Non-Interleaving Mode Analog Input SMAs ................................................. 22
21 ADS5296 EVM Quad Interleaving Mode Analog Input SMAs....................................................... 23
22 TSW1400 GUI Setup (a) ................................................................................................. 24
23 TSW1400 GUI Setup (b) ................................................................................................. 25
24 TSW1400 GUI Setup (c).................................................................................................. 25
25 TSW1400 GUI Setup (d) ................................................................................................. 26
26 TSW1400 GUI Setup (e) ................................................................................................. 26
27 TSW1400 GUI Setup (f) .................................................................................................. 26
28 ADS5296 Plug-in GUI Setup (a)......................................................................................... 27
29 ADS5296 Plug-in GUI Setup (b)......................................................................................... 28
30 ADS5296 Plug-in GUI Setup (c)......................................................................................... 29
31 ADS5296 GUI Setup for RAMP Test ................................................................................... 30
32 HSDCpro GUI Setup for RAMP Test ................................................................................... 31
33 RAMP Capture............................................................................................................. 32
34 RAMP Capture by Channel .............................................................................................. 33
35 Zoom on RAMP Capture ................................................................................................. 34
36 Jumper J35 and J38 positions for Enabled XTAL (default).......................................................... 35
37 Jumper J35 and J38 positions for Disabled XTAL.................................................................... 36
38 Octal Non-interleaving Mode Hardware Setup ........................................................................ 37
39 ADS5296 GUI Setup for Octal Non-Interleaving Mode............................................................... 38
40 HSDCpro GUI Setup for Octal Non-Interleaving Mode (b)........................................................... 39
41 Octal Non-Interleaving Mode Capture 1................................................................................ 40
42 Octal Non-Interleaving Mode Capture 2................................................................................ 41
43 Octal Non-Interleaving Mode Capture 3................................................................................ 42
44 HSDCpro Software Filtering.............................................................................................. 43
45 HSDCpro Software Filtering Menu...................................................................................... 44
46 HSDCpro Capture with Software Filtering.............................................................................. 45
47 Quad-Interleaving Mode Hardware Setup.............................................................................. 46
48 Quad-Interleaving Mode GUI Setup .................................................................................... 47
49 Quad-Interleaving Mode Capture 1 ..................................................................................... 48
50 Quad-Interleaving Mode Capture 2 ..................................................................................... 49
51 Quad-Interleaving Mode Fs/2 - Fin Software Filtering................................................................ 50
52 ADS5296 GUI Simulation Mode......................................................................................... 51
53 ADS5296 GUI Simulation Mode Checkbox Indicator................................................................. 51
54 RECORD/PLAYBACK COMMAND SEQUENCE (a) ................................................................. 52
55 RECORD/PLAYBACK COMMAND SEQUENCE (b) ................................................................. 53
56 RECORD/PLAYBACK COMMAND SEQUENCE (c) ................................................................. 54
57 DIGITAL WAVEFORM GRAPH-WRITE................................................................................ 54
58 EN_SER_BIT Drop-Down Menu ........................................................................................ 55
59 EN_SER_BIT Info Button................................................................................................. 56
60 GENERAL SETUP Section of Top Level Tab ......................................................................... 57
61 CUSTOM WRITE/READ Example ...................................................................................... 57
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62 Test Pattern Tab........................................................................................................... 58
63 PRBS Section Enabled................................................................................................... 58
64 TEST PATTERN MODES Section ..................................................................................... 59
65 Digital Signal Processing Tab............................................................................................ 59
66 Digital Signal Processing Tab............................................................................................ 60
67 Channel Averaging Info Button.......................................................................................... 60
68 INPUT/OUTPUT MAPPING with EN_INTERLEAVE = 0............................................................. 61
69 INPUT/OUTPUT MAPPING with EN_INTERLEAVE = 1 ............................................................ 61
70 Channel Filter Tab......................................................................................................... 62
71 EN_DIG_FILTER = 1 ..................................................................................................... 63
72 Channel 5 High Pass Filter Enabled.................................................................................... 63
73 Channel 1 Digital Filter Enabled......................................................................................... 64
74 Channel 1 Pre-Stored Digital Filter Enabled........................................................................... 64
75 Channel 1 Custom Digital Filter Enabled............................................................................... 65
76 Reset Channels on Channel Filter Tab................................................................................. 65
77 Save/Load Custom Filter Coeffs on Channel Filter Tab.............................................................. 66
78 View Filter Coeffs.......................................................................................................... 66
79 ADS5296 Schematic, Sheet 1 of 9...................................................................................... 67
80 ADS5296 Schematic, Sheet 2 of 9...................................................................................... 68
81 ADS5296 Schematic, Sheet 3 of 9...................................................................................... 69
82 ADS5296 Schematic, Sheet 4 of 9...................................................................................... 70
83 ADS5296 Schematic, Sheet 5 of 9...................................................................................... 71
84 ADS5296 Schematic, Sheet 6 of 9...................................................................................... 72
85 ADS5296 Schematic, Sheet 7 of 9...................................................................................... 73
86 ADS5296 Schematic, Sheet 8 of 9...................................................................................... 74
87 ADS5296 Schematic, Sheet 9 of 9...................................................................................... 75
88 ADS5296 EVM Top Layer Assembly Drawing – Top View .......................................................... 78
89 ADS5296 EVM Bottom Layer Assembly Drawing – Bottom View .................................................. 79
90 ADS5296 EVM Top Side ................................................................................................. 80
91 ADS5296 EVM Ground Plane ........................................................................................... 81
92 ADS5296 EVM Signal Plane............................................................................................. 82
93 ADS5296 EVM Bottom Side ............................................................................................. 83
List of Tables
1 ADS5296 EVM Header Configuration .................................................................................. 20
2 ADS5296 EVM Bill of Materials.......................................................................................... 76
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1 Quick View of Evaluation Setup
Figure 1 is an overview of the evaluation setup that includes the ADS5296 EVM, TSW1400 data capturing
card, external equipment, personal computer (PC), and software requirements.
Figure 1. Evaluation Setup
TSW1400 EVM: The high-speed LVDS deserializer board is required for capturing data from the ADS5296
EVM and its analysis using the TSW1400 graphical user interface (GUI), called High Speed Data
Converter Pro (HSDCpro). For more information pertaining to the TSW1400 EVM, see:
http://focus.ti.com/docs/toolsw/folders/print/tsw1400evm.html
Equipment: Signal generators (with low-phase noise) must be used as source of input signal and clock in
order to get the desired performance. Additionally, band-pass filters (BPF) are required in signal and clock
paths to attenuate the harmonics and noise from the generators. (Note: Functionality of the setup
shown in Figure 1, including the LVDS interface between the ADS5296 and FPGA on the capture
card, can be tested using the on-chip test pattern generator and the on-board crystal oscillator for
an ADC sampling clock source.)
Power Supply: A single +5-V supply powers the ADS5296 EVM through connectors located at J1 and J2.
The supply for the ADS5296 device is derived from this +5 V supply. The power supply must be able to
source up to 1.5 A. The TSW1400 EVM is powered through an AC adaptor provided with its EVM kit.
USB Interface to PC: The USB connections from the ADS5296 EVM and TSW1400 EVM to the personal
computer (PC) are used for communication from the GUIs to the boards. Section 2 explains the TSW1400
and ADS5296 GUI installation procedure.
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2 GUI Software Installation
The ADS5296 EVM and the TSW1400 EVM both require software installations. The following two sections
explain where to find and how to install the software properly. Ensure that no USB connections are made
to the EVMs until after the installations are complete.
2.1 TSW1400 EVM GUI Installation (High Speed Data Converter Pro (HSDCpro))
From the Texas Instruments website, www.ti.com, search for TSW1400. Under Technical Documents, one
will find a Software section from which High Speed Data Converter Pro GUI Installer can be
downloaded and saved (slwc107e.zip or higher).
• Unzip the saved folder and run the installer executable to obtain the menu shown in Figure 2.
• Click the Install button.
Figure 2. HSDCpro Install (a)
• Set the destination directories, or leave as default, for the TSW1400 GUI installation and press the
Next button as shown in Figure 3.
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Figure 3. HSDCpro Install (b)
• Read the License Agreement from Texas Instruments and select I accept the License Agreement and
press the Next button as shown in Figure 4.
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Figure 4. HSDCpro Install (c)
• Read the License Agreement from National Instruments and select I accept the License Agreement
and press the Next button as in Figure 5.
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Figure 5. HSDCpro Install (d)
• Press the Next button as shown in Figure 6.
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Figure 6. HSDCpro Install (e)
• The window shown in Figure 7 should appear, indicating that installation is in progress.
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Figure 7. HSDCpro Install (f)
• The window shown in Figure 8 appears indicating Installation Complete. Press the Next button.
Figure 8. HSDCpro Install (g)
• The window in Figure 9 appears briefly to complete the process.
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Figure 9. HSDCpro Install (h)
• As shown in Figure 10, a computer restart might be requested depending on whether or not the PC
already has the National Instruments’ MCR installer. If requested, hit the Restart button to complete
the installation.
Figure 10. HSDCpro Install (i)
2.2 ADS5296 EVM GUI Installation
Both the ADS5295 and ADS5296 ADCs from Texas Instruments share the same GUI installer. Thus,
references to ADS5295_96 during the installation exist. From the Texas Instruments website, www.ti.com,
search for ADS5296 EVM. Clicking on the hyperlink in the table will lead to another link titled ADS5295
and ADS5296 GUI Installer, v2.1 (Rev. B). Click on this link to download and save the zipped file
(slac547b.zip).
• Unzip the folder and run the Setup.bat file as administrator by right clicking on it and selecting Run as
administrator as shown in Figure 11.
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Figure 11. ADS5296 GUI Install (a)
• Set the destination directories for the ADS5295_96 GUI installation or leave as default and press the
Next button as shown in Figure 12.
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Figure 12. ADS5296 GUI Install (b)
• Read the License Agreement from Texas Instruments and select the I accept the License Agreement
button and then press the Next button as shown in Figure 13.
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Figure 13. ADS5296 GUI Install (c)
• Read the License Agreement from National Instruments and select the I accept the License Agreement
button and then press the Next button as shown in Figure 14.
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Figure 14. ADS5296 GUI Install (d)
• To begin the installation, press the Next button as shown in Figure 15.
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Figure 15. ADS5296 GUI Install (e)
• The window shown in Figure 16 should appear showing that installation is in progress.
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Figure 16. ADS5296 GUI Install (f)
• Upon complete of installation, the window in Figure 17 appears. Press the Finish button to continue.
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Figure 17. ADS5296 GUI Install (g)
3 Hardware and EVM Setup for Testing ADS5296
This section outlines the external connections required for ADS5296 EVM as well as the default
configuration of the EVM’s 3-pin headers and 0-Ωjumper resistors with an explanation of configuration
options.
3.1 External Connections
The connections shown in Figure 18 should be made for proper hardware setup (Note: Testing the LVDS
interface between the ADS5296 EVM and the TSW1400 EVM can be performed using a RAMP function
generated within the ADS5296 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).
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Figure 18. TSW1400 and ADS5296 Setup
1. Mate the TSW1400 EVM at connector J3 to the ADS5296 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 ADS5296 EVM.
4. Connect the USB cable from PC to J13 (USB) of ADS5296 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 ADS5296 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 ADS5296 EVM (that is, +10 dBm,
10 MHz).
3.2 ADS5296 EVM Header Configuration
The ADS5296 EVM is flexible in its configurability through the use of 3 pin headers. The default
configuration of the EVM is set to facilitate initial testing requiring minimal bench equipment by providing
an 80-MHz ADC sampling clock from an on-board crystal oscillator (XTAL). Table 1 describes the purpose
of the 3-pin headers on the EVM while Figure 19 shows the default position. With this configuration, the
XTAL, at reference designator U2, is powered and providing an 80-MHz signal to a transformer which, in
turn, provides a differential sampling clock to the DUT. Table 1 also shows that the default method for
selecting even or odd channels in interleaving mode is done through the ADS5296 GUI (JP14) as
opposed to jumper JP2 on the EVM.
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Table 1. ADS5296 EVM Header Configuration
Jumper Default Config Pin 1 Pin 3 Circuit Description
Silkscreen Silkscreen
JP4 short pins 1-2 1.8V_AVDD +3.3V Power Supply Power Supply for DUT: ALWAYS
1.8V_AVDD
J35 short pins 2-3 GND CDC_3.3V ADC Sampling Selects Power supply for CDC chip
Clock and on-board XTAL oscillator: (1) GND
or (3) +3.3V
J38 short pins 1-2 XTAL CLK_XFMR ADC Sampling Selects ADC sampling clock source:
Clock (1) XTAL osc. or (3) external source
input to SMA J31 CLK_XFMR
J36 short pins 1-2 XTAL XTAL_CDC ADC Sampling Selects path for XTAL osc. signal: (1)
Clock to transformer or (3) to CDC input
J37 short pins 1-2 XTAL CLK_CDC ADC Sampling Selects input source to CDC input: (1)
Clock XTAL osc. or (3) external source input
to SMA J33 CLK_CDC
J39 short pins 2-3 SE DIFF ADC Sampling Selects ADC sampling clock
Clock configuration: (1) Single-ended (3)
Differential (must match J40)
J40 short pins 2-3 SE DIFF ADC Sampling Selects ADC sampling clock
Clock configuration: (1) Single-ended or (3)
Differential (must match J39)
JP2 short pins 1-2 EVEN ODD INTERLEAVE_MUX Selects analog input channels to be
pin interleaved: (1) EVEN channels or (3)
ODD channels
JP14 short pins 1-2 FTDI EVM INTERLEAVE_MUX Selects source of EVEN/ODD select:
(1) GUI control or (3)
INTERLEAVE_MUX pin control
JP3 short pins 1-2 1.8V_AVDD GND SYNC SYNC (Note: JP3 and J34 share
silkscreen "GND")
J34 short pins 2-3 5V GND EXT_REF AMP Selects Power supply for EXT_REF
AMP: (1) +5V or (3) GND (Note: JP3
and J34 share silkscreen "GND")
TP16 short pins 1-2 ADCRESETZ n/a SPI Selects SPI control: (1) GUI control
TP17 short pins 1-2 PD n/a SPI Selects SPI control: (1) GUI control
TP15 short pins 1-2 SDOUT n/a SPI Selects SPI control: (1) GUI control
TP14 short pins 1-2 CSZ n/a SPI Selects SPI control: (1) GUI control
TP12 short pins 1-2 SCLK n/a SPI Selects SPI control: (1) GUI control
TP13 short pins 1-2 SDATA n/a SPI Selects SPI control: (1) GUI control
TP20 short pins 1-2 INTERLEAVE_ n/a SPI Selects SPI control: (1) GUI control
MUX
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