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Evaluating the AD9642/AD9634/AD6672 Analog-to-Digital Converters
FEATURES
Full featured evaluation board for the
AD9642/AD9634/AD6672
SPI interface for setup and control
External or AD9523 clocking option
Balun/transformer or amplifier input drive option
LDO regulator power supply
VisualAnalog and SPI controller software interfaces
EQUIPMENT NEEDED
Analog signal source and antialiasing filter
Sample clock source (if not using the on-board oscillator)
2 switching power supplies (6.0 V, 2.5 A), CUI
EPS060250UH-PHP-SZ, provided
PC running Windows® 98 (2nd ed.), Windows 2000,
Windows ME, or Windows XP
USB 2.0 port recommended (USB 1.1 compatible)
AD9642, AD9634, or AD6672 evaluation board
HSC-ADC-EVALCZ FPGA-based data capture kit
SOFTWARE NEEDED
VisualAnalog
SPI controller
TYPICAL MEASUREMENT SETUP
DOCUMENTS NEEDED
AD9642, AD9634, or AD6672 data sheet
HSC-ADC-EVALCZ data sheet
AN-905 Application Note, VisualAnalog Converter Evaluation
Tool Version 1.0 User Manual
AN-878 Application Note, High Speed ADC SPI Control Software
AN-877 Application Note, Interfacing to High Speed ADCs via SPI
AN-835 Application Note, Understanding ADC Testing and
Evaluation
GENERAL DESCRIPTION
This user guide describes the AD9642, AD9634, and AD6672
evaluation board, which provides all of the support circuitry
required to operate the AD9642, AD9634, and AD6672 in their
various modes and configurations. The application software
used to interface with the devices is also described.
The AD9642, AD9634, and AD6672 data sheets provide
additional information and should be consulted when using the
evaluation board. All documents and software tools are available at
http://www.analog.com/fifo. For additional information or
questions, send an email to
highspeed.converters@analog.com.
Figure 1. AD9642, AD9634, or AD6672 Evaluation Board (on Left) and HSC-ADC-EVALCZ Data Capture Board (on Right)
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 28
UG-386 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Configuring the Board .................................................................6
Using the Software for Testing .....................................................6
Evaluation Board Schematics and Artwork ................................ 14
Ordering Information .................................................................... 23
Bill of Materials ........................................................................... 23
Related Links ................................................................................... 25
Rev. 0 | Page 2 of 28
Evaluation Board User Guide UG-386
EVALUATION BOARD HARDWARE
The AD9642, AD9634, and AD6672 evaluation board provides
all of the support circuitry required to operate these parts in
their various modes and configurations. Figure 2 shows the
typical bench characterization setup used to evaluate the ac
performance of the AD9642, AD9634, or AD6672. It is critical
that the signal sources used for the analog input and the clock
have very low phase noise (<1 ps rms jitter) to realize the optimum performance of the signal chain. Proper filtering of the
analog input signal to remove harmonics and lower the integrated or broadband noise at the input is necessary to achieve
the specified noise performance.
See the Evaluation Board Software Quick Start Procedures section
to get started, and see Figure 19 to Figure 30 for the complete
schematics and layout diagrams. These diagrams demonstrate
the routing and grounding techniques that should be applied at
the system level when designing application boards using these
converters.
POWER SUPPLIES
This evaluation board comes with a wall-mountable switching
power supply that provides a 6 V, 2.5 A maximum output. Connect
the supply to a rated 100 V ac to 240 V ac wall outlet at 47 Hz
to 63 Hz. The output from the supply is provided through a
2.1 mm inner diameter jack that connects to the printed circuit
board (PCB) at P201. The 6 V supply is fused and conditioned
on the PCB before connecting to the low dropout linear regulators
(default configuration) that supply the proper bias to each of the
various sections on the board.
WALL OUTLET
100V TO 240V AC
47Hz TO 63Hz
SWITCHING
POWER
SUPPLY
The evaluation board can be powered in a nondefault condition
using external bench power supplies. To do this, remove the
jumpers on the P104, P107, P108, and P105 header pins to
disconnect the outputs from the on-board LDOs. This enables the
user to bias each section of the board individually. Use P202
and P203 to connect a different supply for each section. A 1.8 V
supply is needed with a 1 A current capability for DUT_AVDD and
DRVDD; however, it is recommended that separate supplies be
used for both analog and digital domains. An additional supply
is also required to supply 1.8 V for digital support circuitry on
the board, DVDD. This should also have a 1 A current capability
and can be combined with DRVDD with little or no degradation
in performance. To operate the evaluation board using the SPI
and alternate clock options, a separate 3.3 V analog supply is
needed in addition to the other supplies. This 3.3 V supply, or
3P3V_ANALOG, should have a 1 A current capability. This
3.3 V supply is also used to support the optional input path
amplifier (ADL5201) on Channel A and Channel B.
INPUT SIGNALS
When connecting the clock and analog source, use clean signal
generators with low phase noise, such as the Rohde & Schwarz
SMA or HP 8644B signal generators or an equivalent. Use a 1 m
shielded, RG-58, 50 Ω coaxial cable for connecting to the evaluation board. Enter the desired frequency and amplitude (see the
Specifications section in the data sheet of the respective part).
SWITCHING
POWER
SUPPLY
6V DC
2.5A MAX
SIGNAL
SYNTHESIZER
ANALOG
FILTER
SIGNAL
SYNTHESIZER
OPTIO NAL CLOCK SOURCE
Figure 2. Evaluation Board Connection
Rev. 0 | Page 3 of 28
6V DC
2.5A MAX
PC
RUNNING ADC
ANALYZER
OR VISUAL ANAL O G
USER SOFTWARE
10593-002
UG-386 Evaluation Board User Guide
AD9642/AD9634/
AD6672
15Ω
0.1µF
2V p-p
VIN+
VIN–
VCM
3.9pF
3.9pF
15Ω
0.1µF
S
0.1µF
3.9pF
36Ω
36Ω
SP
A
P
49.9Ω
49.9Ω
10593-003
When connecting the analog input source, use of a multipole,
narrow-band, band-pass filter with 50 Ω terminations is recommended. Analog Devices, Inc., uses TTE and K&L Microwave,
Inc., band-pass filters. The filters should be connected directly
to the evaluation board.
If an external clock source is used, it should also be supplied
with a clean signal generator as previously specified. Typically,
most Analog Devices evaluation boards can accept ~2.8 V p-p or
13 dBm sine wave input for the clock.
OUTPUT SIGNALS
The default setup uses the Analog Devices high speed converter
evaluation platform (HSC-ADC-EVALCZ) for data capture. The
output signals from Channel A and Channel B for the AD9642,
AD9634, and AD6672 are routed through P601 and P602,
respectively, to the FPGA on the data capture board.
DEFAULT OPERATION AND JUMPER SELECTION
SETTINGS
This section explains the default and optional settings or modes
allowed on the AD9642/AD9634/AD6672 evaluation board.
Power Circuitry
Connect the switching power supply that is supplied in the
evaluation kit between a rated 100 V ac to 240 V ac wall outlet
at 47 Hz to 63 Hz and P201.
Analog Input
The A and B channel inputs on the evaluation board are set up for a
double balun-coupled analog input with a 50 Ω impedance. This
input network is optimized to support a wide frequency band. See
the AD9642, AD9634, and AD6672 data sheets for additional
information on the recommended networks for different input
frequency ranges. The nominal input drive level is 10 dBm to
achieve 2 V p-p full scale into 50 Ω. At higher input frequencies,
slightly higher input drive levels are required due to losses in the
front-end network.
Optionally, Channel A and Channel B inputs on the board can
be configured to use the ADL5201 digitally controlled, variable
gain wide bandwidth amplifier. The ADL5201 component is
included on the evaluation board at U401. However, the path into
and out of the ADL5201 can be configured in many different
ways depending on the application; therefore, the parts in the
input and output path are left unpopulated. See the ADL5201
data sheet for additional information on this part and for
configuring the inputs and outputs. The ADL5201, by default,
is held in power-down mode but can be enabled by adding 1 kΩ
resistors at R427 and R428 to enable Channel A and Channel B,
respectively.
Clock Circuitry
The default clock input circuit that is populated on the AD9642/
AD9634/AD6672 evaluation board uses a simple transformer-
coupled circuit with a high bandwidth 1:1 impedance ratio
transformer (T503) that adds a very low amount of jitter to the
clock path. The clock input is 50 Ω terminated and ac-coupled
to handle single-ended sine wave types of inputs. The transformer converts the single-ended input to a differential signal
that is clipped by CR503 before entering the ADC clock inputs.
The board is set by default to use an external clock generator. An
external clock source capable of driving a 50 Ω terminated input
should be connected to J506.
A differential LVPECL clock driver output can also be used to
clock the ADC input using the AD9523 (U501). To place the
AD9523 into the clock path, populate R541 and R542 with 0 Ω
resistors and remove C532 and C533 to disconnect the default
clock path inputs. In addition, populate R533 and R534 with
0 Ω resistors, remove R522 and R523 to disconnect the default
clock path outputs, and insert AD9523 LVPECL Output 2. The
AD9523 must be configured through the SPI controller software to
set up the PLL and other operation modes. Consult the AD9523
data sheet for more information about these and other options.
PDWN
To enable the power-down feature, Bits[1:0] of Register 0x08 must
be written for the desired power-down mode.
OEB
To disable the digital output pins and place them in a high impedance state, Bit 4 of Register 0x14 must be written.
Figure 3. Default Analog Input Configuration of the AD9642/AD9634/AD6672
Rev. 0 | Page 4 of 28
Evaluation Board User Guide UG-386
Switching Power Supply
Optionally, the ADC on the board can be configured to use the
ADP2114 dual switching power supply to provide power to the
DRVDD and AVDD rails of the ADC. To configure the board
to operate from the ADP2114, the following changes must be
incorporated (see the Evaluation Board Schematics and Artwork
and the Bill of Materials sections for specific recommendations
for part values):
1. Install R204 and R221 to enable the ADP2114.
2. Install R216 and R218.
3. Install L201 and L202.
4. Remove JP201 and JP203.
5. Remove jumpers from across Pin 1 and Pin 2 on P107 and
P108, respectively.
6. Place jumpers across Pin 1 and Pin 2 of P106 and P109,
respectively.
Making these changes enables the switching converter to power
the ADC. Using the switching converter as the ADC power
source is more efficient than using the default LDOs.
Rev. 0 | Page 5 of 28
UG-386 Evaluation Board User Guide
10593-004
10593-005
EXPAND DISPLAY BUTTON
10593-006
EVALUATION BOARD SOFTWARE QUICK START PROCEDURES
This section provides quick start procedures for using the AD9642/
AD9634/AD6672 evaluation board. Both the default and
optional settings are described.
CONFIGURING THE BOARD
Before using the software for testing, configure the evaluation
board as follows:
1. Connect the evaluation board to the data capture board, as
shown in Figure 1 and Figure 2.
2. Connect one 6 V, 2.5 A switching power supply (such as
the CUI, Inc., EPS060250UH-PHP-SZ that is supplied) to
the AD9642/AD9634/AD6672 board.
3. Connect another 6 V, 2.5 A switching power supply (such
as the CUI EPS060250UH-PHP-SZ that is supplied) to the
HSC-ADC-E VA L CZ board.
4. Connect the HSC-ADC-E VALCZ board (J6) to the PC
with a USB cable.
5. On the ADC evaluation board, confirm that jumpers are
installed on the P105, P108, P104, P107, and P110 headers.
6. Connect a low jitter sample clock to Connector J506.
7. Use a clean signal generator with low phase noise to provide
an input signal to the desired channel(s) at Connector J301
(Channel A) and/or Connector J303 (Channel B). Use a
1 m, shielded, RG-58, 50 Ω coaxial cable to connect the
signal generator. For best results, use a narrow-band bandpass filter with 50 Ω terminations and an appropriate
center frequency. (Analog Devices uses TTE, Allen Avionics,
and K&L band-pass filters.)
USING THE SOFTWARE FOR TESTING
Setting Up the ADC Data Capture
After configuring the board, set up the ADC data capture using
the following steps:
1. Open VisualAnalog® on the connected PC. The appro-
priate part type should be listed in the status bar of the
VisualAnalog – New Canvas window. Select the template
that corresponds to the type of testing to be performed
(see Figure 4 where the AD9642 is shown as an example).
The AD9642 is given as an example in this user guide.
Similar settings are used for the AD9634. For the AD6672,
the differences are noted where necessary in the steps
that follow.
2. After the template is selected, a message appears asking if
the default configuration can be used to program the FPGA
(see Figure 5). Click Yes, and the window closes.
3. To change features to settings other than the default settings,
click the Expand Display button, located on the bottom
right corner of the window (see Figure 6) to see what is
shown in Figure 7.
Detailed instructions for changing the features and capture
settings can be found in the AN-905 Application Note,
VisualAnalog™ Converter Evaluation Tool Version 1.0 User
Manual. After the changes are made to the capture settings,
After the ADC data capture board setup is complete, set up the
SPI controller software using the following procedure:
1. Open the SPI controller software by going to the Start menu
or by double-clicking the SPIController software desktop
icon. If prompted for a configuration file, select the appropriate
one. If not, check the title bar of the window to determine
which configuration is loaded. If necessary, choose Cfg Open from the File menu and select the appropriate file
based on your part type. Note that the CHIP ID(1) section
should be filled to indicate whether the correct SPI
controller configuration file is loaded (see Figure 8).
Rev. 0 | Page 7 of 28
Figure 8. SPI Controller, CHIP ID(1) Section
UG-386 Evaluation Board User Guide
NEW DUT BUTT ON
10593-009
10593-010
2. Click the New DUT button in the SPIController window
(see Figure 9).
4. In the ADCBase 0 tab of the SPIController window, find the
OUTPUT DELAY(17) box. Select the DCO Clk Delay
Enable checkbox to enable this feature. In the drop-down box,
select 600 ps additional delay on DCO pin. These settings
align the output timing with the input timing on the
capture FPGA.
Note that other settings can be changed on the ADCBase 0
tab (see Figure 11). See the appropriate part data sheet; the
AN-878 Application Note, High Speed ADC SPI Control
Software; and the AN-877 Application Note, Interfacing to
High Speed ADCs via SPI, for additional information on
the available settings.
Figure 9. SPI Controller, New DUT Button
3.In the ADCBase 0 tab of the SPIController window, find the
CLK DIV(B) section (see Figure 11). If using the clock
divider, use the drop-down box to select the correct clock
divide ratio, if necessary. See the appropriate part data sheet;
the AN-878 Application Note, High Speed ADC SPI Control
Software; and the AN-877 Application Note, Inter facing to
High Speed ADCs via SPI, for additional information.
Figure 10. SPI Controller, Example ADCBase 0 Tab
Rev. 0 | Page 8 of 28
Evaluation Board User Guide UG-386
10593-011
Figure 11. SPI Controller, CLK DIV(B) Section
Rev. 0 | Page 9 of 28
UG-386 Evaluation Board User Guide
10593-012
10593-013
Figure 12. SPI Controller, Example ADCBase 0 Tab—NSR Settings for the AD6672
5. If using the noise shaping requantizer (NSR) feature of the
AD6672, the settings in the ADCBase 0 tab must be
changed (see Figure 12). The NSR Enable checkbox must
be selected under the NOISE SHAPED REQUANTIZER 1(3C) section. This enables the circuitry in the AD6672.
To select the bandwidth mode, use the NSR Mode dropdown box in the NOISE SHAPED REQUANTIZER 1(3C)
section. Upon selecting the bandwidth mode, select the
desired tuning word in the NS R Tuni ng drop-down menu
under the NOISE SHAPED REQUANTIZER TUNING(3E)
section.
6. Click the Run button in the VisualAnalog toolbar (see
Figure 13).
Figure 13. Run Button (Encircled in Red) in VisualAnalog Toolbar,
The next step is to adjust the amplitude of the input signal for
each channel as follows:
1. Adjust the amplitude of the input signal so that the fundamen-
tal is at the desired level. (Examine the Fund Power reading
in the left panel of the VisualAnalog Graph window.) See
Figure 15.
2. Repeat this procedure for Channel B if desired.
3. Click the Save disk icon within the Graph window to save
the performance plot data as a .csv formatted file. See
Figure 14 for an example.
Figure 14. Typical FFT, AD9642
Figure 15. Graph Window of VisualAnalog (AD9642)
Rev. 0 | Page 11 of 28
UG-386 Evaluation Board User Guide
10593-016
4. If operating the AD6672 with NSR enabled, certain options
in VisualAnalog must be enabled. Click the button circled
in the FFT Analysis box (see Figure 16) in VisualAnalog to
bring up the options for setting the NSR.
Figure 16. VisualAnalog, Main Window—Showing FFT Analysis for AD6672
Rev. 0 | Page 12 of 28
Evaluation Board User Guide UG-386
10593-017
10593-018
5. Configure the settings in the FFT analysis to match the
settings selected for the NSR in the SPI controller (see
Figure 17).
Figure 17. VisualAnalog, FFT Analysis Settings for AD6672
6. The result should show an FFT plot that looks similar to
Figure 18.
Troubleshooting Tips
If the FFT plot appears abnormal, do the following:
•If you see a normal noise floor when you disconnect the
signal generator from the analog input, be sure that you
are not overdriving the ADC. Reduce the input level if
necessary.
•In VisualAnalog, click the Settings button in the Input
Formatter block (see Figure 7). Check that Number
Format in the settings of the Input Formatter block is set
to the correct encoding (offset binary by default). Repeat
for the other channel.
If the FFT appears normal but the performance is poor, check
the following:
•Make sure that an appropriate filter is used on the
analog input.
•Make sure that the signal generators for the clock and the
analog input are clean (low phase noise).
•Change the analog input frequency slightly if noncoherent
sampling is being used.
•Make sure that the SPI configuration file matches the
product being evaluated.
Figure 18. Graph Window of VisualAnalog, NSR Enabled, AD6672
7. The amplitude shows approximately 0.6 dB lower than
when the NSR is disabled. The NSR circuitry introduces
this loss. An amplitude of −1.6 dBFS with NSR enabled
is analogous to an amplitude of −1.0 dBFS with NSR
disabled.
8. Repeat Step 3 to save the graph in a .csv file format.
If the FFT window remains blank after Run (see Figure 13) is
clicked, do the following:
•Make sure that the evaluation board is securely connected
to the HSC-ADC-E VA L C Z board.
•Make sure that the FPGA has been programmed by
verifying that the DONE LED is illuminated on the HSC-
ADC-EVA LC Z board. If this LED is not illuminated, make
sure that the U4 switch on the board is in the correct
position for USB CONFIG.
•Make sure that the correct FPGA program was installed by
clicking the Settings button in the ADC Data Capture
block in VisualAnalog. Then select the FPGA tab and
verify that the proper FPGA bin file is selected for the part.
If VisualAnalog indicates that the data capture timed out, do the
following:
• Make sure that all power and USB connections are secure.
• Probe the DCO signal at the ADC on the evaluation board
and confirm that a clock signal is present at the ADC
sampling rate.
Rev. 0 | Page 13 of 28
UG-386 Evaluation Board User Guide
ADD 1UF AT DUT PIN #3
AD9642/AD9634 ENG (SOCKET)
DUT
THE FOOTPRINT FOR THIS SOCKED NEEDS TO BE CHECKED AGAINST THE DRAWING
LAYOUT: DECOUPLING QUANTITY MAY VARY LAYOUT DEPENDI
1
TP101
1
TP102
1
TP105
1
TP103
1
TP104
C122
1
TP_KPIBIAS
PAD
9
87654
32
31
30
3
29
28
27
26
25
24232221202191817
16
15
14
13
12
11
10
1
U1010
C105
C113C112C111C110C109
C103C101C121
C117C118
C107
D12/D13+
D12/D13-
CLK-
D0/D1+
D2/D3-
SG-MLF32A-7004
D10/D11+
D10/D11-
DRVDD
D6/D7+
D8/D9-
D8/D9+
D6/D7D4/D5+
D4/D5-
D2/D3+
D0/D1-
AVDD
DUT_CSB
DCO+
VIN+
VIN-
DUT_SDIO
DUT_SCLK
0.1UF0.1UF
DRVDD
AVDD
1UF0.1UF1UF
VCM
AVDD
AVDD
0.1UF
VCM
1UF
0.1UF
0.1UF
1UF
1UF
KP_VDDIO
CLK+
DRVDD
DCO-
0.1UF0.1UF
10593-019
EVALUATION BOARD SCHEMATICS AND ARTWORK
Figure 19. Device Under Test and Related Circuits
Rev. 0 | Page 14 of 28
POWER
TO EVALUATE SHARING OF AVDD AND DVDD
SUPPLY
SWITCHING
OPTIONAL
C242
C205C208
C229
C226
C218
C217
C215
C243
C241
C230
C228
C227
C225
C209
C207C204
C206
C239
C235C233C231
5
1
4 2
3
U207
21
E217
2
1
P110
5
1
4 2
3
U203
5
1
4 2
3
U202
2
1
P109
2
1
P108
2
1
P107
2
1
P106
2
1
P105
2
1
P104
R210
21
E209
21
E208
21
JP203
21
JP201
R217
C221
21
E210
R216
C220
L201
R219
21
E211
C224C223
R218
L202
R215
C219
R220
C222
C213
R214
C214
R213
R208R207
C216
R206
C212
C211C210
R205
R204
R209
U206
R212
R211
R221
R222
65432
1
P202
432
1
P203
21
E216
NP
C240
A C
CR204
A C
CR206
21
E203
21
E204
21
E212
21
E213
21
E214
21
E206
8
7
PAD
6
5
4
321
U205
21
E207
A C
CR205
21
E205
21
E202
8
7
PAD
6
5
4
321
U204
R201
321
P201
NP
C201
2
1
F201
A C
CR201
CR203
A C
CR202
3
654
21
FL201
NP
C232
NP
C236
NP
C234
LNJ314G8TRA (GREEN)
VIN
SK33A-TP
BNX016-01
3P3V_DIGITAL
4.7UF
ADP150AUJZ-3.3-R7
261
ADP150AUJZ-3.3-R7
100MHZ
3P3V_ANALOG
100MHZ
100MHZ
0.01UF
4.7UF
0.01UF
4.7UF
4.7UF
4.7UF
ADP1706ARDZ-1.8-R7
4.7UF
100MHZ
100MHZ
22UF
100MHZ
Z5.531.3425.0
0.1UF
0.1UF0.1UF
10UF
0.1UF
100MHZ
1P8V_CLOCK
100MHZ
S2A-TP
0
DNI
100MHZ
ADP2114_PRELIM
VOUTB
EN2
VOUTA
EN1
SW_FREQ
0
100MHZ
VIN
10UF
DNI
DNI
2.2UH
DNI
DNI
2200PF
100PF
VOUTB
TBD0603
2.2UH
S2A-TP
100MHZ
DNI
100MHZ
DRVDD
AVDD
DNI
Z5.531.3625.0
10UF
100MHZ
100MHZ
22UF
1UF
1.00K
27K
0
10
DNI
0
VOUTA
EN2VIN
EN1
22UF
1.00K
DNI
0
15K
15K
0
22UF
0
DRVDD
3P3V_DIGITAL
DNI
VIN
100K
13K
22UF22UFTBD0603
100PF
0
TBD0603
100MHZ
10UF
10UF
10.5K
1500PF
DNI
4.64K
0.01UF
0.01UF
4.7UF
0.01UF
4.7UF
DNI
DNI
4.7UF
0.01UF
DNI
ADP1706ARDZ-1.8-R7
TBD0603
4.7UF
0.01UF
DNI
3P3V_ANALOG
S2A-TP
1.1A
PJ-202A
AVDD
100K
ADP150AUJZ-1.8-R7
GNDNC
VOUT
EN
VIN
GNDNC
VOUT
EN
VIN
GNDNC
VOUT
EN
VIN
VIN6
VIN5
VIN4
VIN3
VIN2
VIN1
VDD
PAD
PGND4
PGND3
PGND2
PGND1
GND
SS2
FB2
V2SET
SW4
SW3
COMP2
PGOOD2
SW2
SW1
COMP1
PGOOD1
EN2
SS1
FB1
V1SET
EN1
OPCFG
SYNC_CLKOUT
FREQ
SCFG
PAD
SS
IN
GND1
SENSE
OUT
EN
IN2 OUT2
PAD
SS
IN
GND1
SENSE
OUT
EN
IN2
OUT2
10593-020
Evaluation Board User Guide UG-386
Figure 20. Board Power Input and Supply
Rev. 0 | Page 15 of 28
UG-386 Evaluation Board User Guide
SHARE PADS
ANALOG INPUT
SHARE PADS
LAYOUT: SMA'S SHOULD BE PLACED 540 MILS CENTER TO CENTER
PASSIVE PATH
AIN
DNI
2
J302
1
35
C314
642
3
1
T301
L301
R304
4
R305R306
R310
R307R308
R309
R303R302
R301
5432
1
J301
5
43
1
T303
5
43
1
T302
C306
C305
C301
R320
R319
C303
R317
C302
R318
C304
R315
R313
R316
R314
R311
R312
DNI
DNI
ADT1-1WT+
DNI
0.1UF
0
0
MABA-007159-000000
AMP_IN+
0.1UF
MABA-007159-000000
0
AMP_OUT+
AMP_OUT-
36
82NH
VCM
DNI
0.1UF
0.1UF
36
49.9
DNI
0
00
DNI
DNI
DNI
DNI
DNI
49.9
0
49.9
8.2PF
8.2PF
0
DNI
33
33
VIN+
49.9
8.2PF
0
0
0
VIN-
AMP_IN-
DNI
0
SECPRI
SECPRI
10593-021
Figure 21. Passive Analog Input Circuits
Rev. 0 | Page 16 of 28
Evaluation Board User Guide UG-386
THESE RLCS ARE PLACE HOLDERS... PLACE CORRECT VALUES & COMPONENTS...
AN-878 Application Note, High Speed ADC SPI Control Software
AN-877 Application Note, Interfacing to High Speed ADCs via SPI
AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation
AN-905Application Note, VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual
Rev. 0 | Page 25 of 28
UG-386 Evaluation Board User Guide
NOTES
Rev. 0 | Page 26 of 28
Evaluation Board User Guide UG-386
NOTES
Rev. 0 | Page 27 of 28
UG-386 Evaluation Board User Guide
RCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
construed in accordance with the substantive laws of the Commonwealth of
NOTES
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high e nergy ESD. Therefore, proper ESD precaution s should be taken to avoid per forma nce degra dation or loss of functionality.
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