Analog Devices EVAL-AD4114 User manual

EVAL-AD4114SDZ User Guide
UG-1819
One Technology Way •P. O . Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: [phone] •Fax: [phone] •www.analog.com
Evaluating the AD4114 Single Supply, 24-Bit, Sigma-Delta ADC with ±10 V Inputs
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.Rev. 0 | Page 1 of 24
FEATURES
Fully featured evaluation board for the AD4114
PC software for control and data analysis (time domain)
EVALUATION KIT CONTENTS
EVAL-AD4114SDZ evaluation board
AD411x Eval+evaluation software
Plastic screw and washer set
SOFTWARE NEEDED
AD411x Eval+
EQUIPMENT NEEDED
Any of the following SDP hardware: EVAL-SDP-CB1Z (SDP-B)
or EVAL-SDP-CK1Z (SDP-K1)
DC signal source
PC running Windows with USB 2.0 port
GENERAL DESCRIPTION
The EVAL -AD4114SDZ is a full featured evaluation board that
can evaluate all the features of the AD4114. The AD4114 is a
24-bit, 31.25 kSPS, Σ-Δ analog-to-digital converter (ADC) with
a ±10 V input voltage range (16 single-ended channels or eight
fully differential channels). All channels have on-board
overvoltage and overcurrent protection.
The EVAL -AD4114SDZ includes voltage references and power
and data insulation and can be connected to the Analog Devices,
Inc., system demonstration platform (SDP) hardware. The SDP
board provides connection to a PC via a universal serial bus
(USB) port and can provide power for the E VA L -AD4114SDZ
from the PC USB port.
The AD411x Eval+ evaluation software configures the AD4114
functionality and provides dc time domain analysis in the form
of waveform graphs, histograms, and associated noise analysis
for ADC performance evaluation.
Full specifications for the AD4114 are available in the AD4114
data sheet, which must be consulted in conjunction with this
user guide when working with the EVAL-AD4114SDZ.
EVALUATION BOARD PHOTOGRAPH
24002-001
Figure 1.

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TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents................................................................... 1
Software Needed ............................................................................... 1
Equipment Needed........................................................................... 1
General Description ......................................................................... 1
Evaluation Board Photograph......................................................... 1
Revision History ............................................................................... 2
Evaluation Board Block Diagram................................................... 3
EVAL -AD4114SDZ Quick Start Guide ......................................... 4
Recommended Quick Start Guide ............................................. 4
Quick Start Measurement ........................................................... 4
Evaluation Board Hardware ............................................................ 5
Device Description....................................................................... 5
Hardware Link Options............................................................... 5
Evaluation Board Setup Procedure ............................................ 5
Serial Interface .............................................................................. 6
Power Supplies...............................................................................6
Analog Inputs ................................................................................6
Reference Options.........................................................................6
Evaluation Board Software...............................................................7
Software Installation Procedures.................................................7
Software Operation .................................................................... 11
Configuration Tab ...................................................................... 11
Waveform Tabs ........................................................................... 13
Histogram Tab ............................................................................ 15
Register Map Tab (Advanced Mode Only) ............................. 16
Exiting the Software................................................................... 16
Evaluation Board Schematics and Artwork................................ 17
Ordering Information.................................................................... 23
Bill of Materials........................................................................... 23
REVISION HISTORY
7/2020—Revision 0: Initial Version

EVAL-AD4114SDZ User Guide UG-1819
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EVALUATION BOARD BLOCK DIAGRAM
SDP-B
ADSP-BF527
STATUS
ADR4525
2.5V OUTPUT NC
VOUT
NC
NC VIN NC GND
TP
USB
POWER
REF– REF+ REFOUT
REGCAPA IOVDD REGCAPD
VBIAS–
XTAL1 XTAL2/CLKIO
CS SCLK DIN
DOUT/RDY
AVSS
NOTES 1. FOR SIMPLICITY DECOUPLING IS NOT SHOWN.
POWER = 5V OR 3.3V
ADuM5411
POWER AND DATA
POWER = 5V OR 3.3V
VOLTAGE
INPUTS
PROTECTION
VIN0 VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7
VINCOM
XTAL AND INTERNAL
CLOCK OSCILLATOR
CIRCUITRY
RAIL TO RAIL
REFERENCE
INPUT BUFFERS
Σ-Δ ADC
1.8V
LDO
MUX
1.8V
LDO
INT
REF
SERIAL
INTERFACE
DIGITAL
FILTER
BUFFERED PRECISION REFERENCE
AD4114
TEMPERATURE
SENSOR
AVDD
VIN8 VIN9
VIN10 VIN11 VIN12 VIN13 VIN14 VIN15
PRECISION
VOLTAGE
DIVIDER
GPO CONTROL
GPIO0 GPIO1 GPO2 GPO3
24002-002
Figure 2. EVAL-AD4114SDZ Block Diagram

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EVAL-AD4114SDZ QUICK START GUIDE
RECOMMENDED QUICK START GUIDE
Use the following procedure to set up the EVA L -AD4114SDZ:
1. Disconnect the SDP (SDP-B or SDP-K1) board from the
USB port of the PC. Install the AD411x Eval+ software.
See the Installing the AD411x Eval+ Software section.
Restart the PC after installation.
2. Connect the SDP board to the E VA L-AD4114SDZ. Fasten
these two boards together with the enclosed plastic screw
washer set.
3. Connect the SDP board to the PC via the USB cable. For
Windows® XP, it may be necessary to search for the SDP
drivers. Choose to automatically search for the drivers for
the SDP board if prompted by the operating system.
4. Launch the AD411x Eval+ software from the Analog
Devices subfolder in the Programs menu.
QUICK START MEASUREMENT
Use the following procedure to capture data quickly:
1. Connect the dc signal source to a selected voltage input (for
example, the VIN0 pin and VIN1 pin for differential input).
2. Launch the AD411x Eval+ software and select Quickstart
(see Figure 15).
3. In the Configuration tab, under Demo Modes, click All
Single-Ended and then click Sample (see Figure 16).
4. In the Voltage Waveform tab, the user can evaluate the
measured data.
The Samples box in the top right corner of the AD411x Eval+
window sets the number of samples collected in each batch.

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EVALUATION BOARD HARDWARE
DEVICE DESCRIPTION
The AD4114 is a highly accurate, high resolution, multiplexed,
Σ-Δ ADC with 16 single-ended or 8 differential voltage inputs,
and a voltage range of −10 V to +10 V. The maximum channel
to channel scan rate is 6.21 kSPS (161 μs) for fully settled data.
The output data rates range from 1.25 SPS to 31.25 kSPS. The
device includes integrated analog reference buffers, an integrated
precision 2.5 V reference, and an integrated oscillator.
See the AD4114 data sheet for complete specifications. Consult
the data sheet in conjunction with this user guide when using
the evaluation board.
HARDWARE LINK OPTIONS
See Table 1 for the default link options. By default, the EVAL-
AD4114SDZ is powered from and controlled by the SDP board
connected to J12. The ADuM5411 (U3) output is set to 5 V.
EVALUATION BOARD SETUP PROCEDURE
After following the instructions in the Software Installation
Procedures section, set up the EVAL-AD4114SDZ and SDP
board as detailed in the Configuring the EVAL-AD4114SDZ and
SDP Boards section.
The evaluation software and drivers must be installed before
connecting the EVAL-AD4114SDZ and SDP board to the USB
port of the PC to ensure that the PC correctly recognizes the
evaluation system.
Configuring the EVAL-AD4114SDZ and SDP Boards
Use the following procedure to configure the boards:
1. Connect the SDP board to Connector A or Connector B on
the EVAL-AD4114SDZ. Screw the two boards firmly
together using the plastic screw and washer set included in
the evaluation board kit.
2. If using the SDP-K1 board, the Arduino headers can also be
used to connect to the EVAL-AD4114SDZ. If the Arduino
headers are used, the J6 links must be changed to ARD.
3. Ensure that LK3 is in Position B (USB).
4. Connect the SDP board to the PC using the USB cable.
Table 1. Default Link and Solder Link Options
Link Default Option Description
LK1 Inserted Connects the on-board external reference ADR4525ARZ (U2) to AD4114 (U1). Remove LK1 if using a
different single-ended external reference.
LK2 Inserted Connects VINCOM to GND_ISO. This configuration is typical for single-ended measurement. Remove LK2 to
set the custom common analog input for single-ended channels. VINCOM is available on Pin 5 of J3.
LK3 B (USB) Selects the power supply voltage.
Position A: EVAL-AD4114SDZ is powered from the external dc power supply connector, J4.
Position B: EVAL-AD4114SDZ is powered from the USB through the SDP or Arduino connector.
LK4 to LK6 SDP Selects which Arduino serial peripheral interface (SPI) lines to connect to J6.
STD: Standard Arduino headers.
ALT: Alternate in-circuit serial programming (ICSP) header.
LK7, LK8 SDP Selects the I2C source for the on board electronically erasable programmable read-only memory (EEPROM).
SDP: SDP connector.
ARD: Arduino header.
LK9, LK10 Inserted Connects VIN4 and VIN5 to the Zener diodes, D16 and D17, respectively. VIN4 and VIN5 can be removed to
evaluate the voltage inputs of the AD4114 directly by removing external components.
LK11, LK12 Removed Bypasses R10 and R11 on VIN4 and VIN5, respectively.
By inserting this link, the resistor is removed from the input path and AD4114 can be evaluated directly.
J6 SDP Selects between the Arduino headers and the SDP connector, and has the active connector for power and SPI
signals.
SDP: SDP connector.
ARD: Arduino header.
J14 CS0 Selects which GPIOx pin to use on the Arduino header to enable CS connections when stacking evaluation
boards.
R35 Open Sets the ADuM5411 (U3) isolated regulator output voltage.
Open: +VA_ISO = 5 V.
Short: +VA_ISO = 3.3 V.

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SERIAL INTERFACE
The EVAL -AD4114SDZ connects via the SPI to either the SDP
connector or Arduino header. There are four primary signals,
three inputs (CS, SCLK, and DIN), and one output from the
ADC (DOUT/RDY).
The EVAL -AD4114SDZ connects to any microcontroller board
that uses the Arduino standard headers. The Arduino standard
headers allow the user to develop code for a variety of platforms.
To operate the EVA L-AD4114SDZ in standalone mode, disconnect
any SDP board connected, remove the jumpers in the J6 header,
and use the middle row of pins on J6 to access all SPI signals
and set the input/output voltage levels.
POWER SUPPLIES
By default, the EVAL-AD4114SDZ is powered from the USB.
The EVAL -AD4114SDZ can also be powered from the J4
connector by setting LK3 to Position A, or from Pin +5V on
Connector J6 (see Table 2).
The ADuM5411 isoPower® digital isolator is used to isolate
power and data lines up to 2.5 kV rms.
ANALOG INPUTS
Sixteen voltage inputs are available on J2 and J3. If a different
common voltage must be set for single-ended measurement,
remove LK2 and connect the desired voltage to VINCOM on J3.
REFERENCE OPTIONS
The EVAL -AD4114SDZ includes an external 2.5 V reference,
the ADR4525ARZ. By default, LK1 is inserted, connecting the
external reference to the REF+ pin of the AD4114. Remove LK1
if using a different single-ended external reference.
In the AD411x Eval+ evaluation software, click the blue + pop-
up button associated with Setup 0 to Setup 7 to select the
reference used for conversions by the AD4114 (see Figure 16).
The pop-up button is located below the external reference
controls in the block diagram (Label 7 in Figure 16).
Table 2. Connector Details
Connector Function Connector Type Manufacturer Part Number
J1 Connects to the GPIOx pins of the
AD4114
4-pin header, 2.54 mm pitch Harwin M20-9990445
J2, J3 Voltage inputs to AD4114 Connectors, header, 90°, 9-position, 3.81 mm Phoenix Contact 1803345
J4 External supply voltage (optional) Power socket block, 3-way, 3.81 mm pitch Phoenix Contact 1803280
J7, J10 Arduino headers 8-position receptacle connectors, 2.54 mm pitch Samtec SSQ-108-03-G-S
J8 Arduino header 6-position receptacle connector, 2.54 mm pitch Samtec SSQ-106-03-G-S
J9 Arduino header 10-position receptacle connector, 2.54 mm pitch Samtec SSQ-110-03-G-S
J11 Arduino ICSP header 6-position, 2 row, receptacle connector,
2.54 mm pitch
Samtec SSQ-103-03-G-D
J12 SDP connector 120-way connector, 0.6 mm pitch HRS FX8-120S-SV(21)
J13 Earth for electrostatic discharge
(ESD) testing
Not applicable Not applicable Not applicable

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EVALUATION BOARD SOFTWARE
SOFTWARE INSTALLATION PROCEDURES
The EVAL -AD4114SDZ evaluation kit includes a link to the
software that must be installed before using the E VA L-
AD4114SDZ.
The following two installations are required:
•AD411x Eval+ software installation
•SDP drivers installation
The AD411x Eval+ evaluation software and drivers must be
installed before connecting the EVAL-AD4114SDZ and SDP
board to the USB port of the PC to ensure that the PC correctly
recognizes the evaluation system.
Installing the AD411x Eval+ Software
To install the AD411x Eval+ software, take the following steps:
1. With the SDP board disconnected from the USB port of
the PC, download and unzip the AD411x Eval+ software
installer file from the EVA L -AD4114SDZ product page.
2. Double-click the setup.exe file to begin the evaluation
board software installation. The software then installs to
the following default location: C:\Program Files
(x86)\Analog Devices\AD411x Eval+\.
3. A dialog box appears asking for permission to allow the
program to make changes to the PC. Click Yes (see
Figure 3).
24002-003
Figure 3. Granting Permission for the Program to Make Changes to the PC
4. Select a location to install the software and then click Next.
Figure 4 shows the default locations displayed when the
dialogue box opens, but another location can be selected by
clicking Browse.
24002-004
Figure 4. Selecting the Location for Software Installation
5. A license agreement appears. Read the agreement, select I
accept the License Agreement, and click Next.
24002-005
Figure 5. Accepting the License Agreement
6. A summary of the installation displays. Click Next to
continue.
24002-006
Figure 6. Reviewing a Summary of the Installation

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7. The message in Figure 7 appears when the installation is
complete. Click Next.
24002-007
Figure 7. Indicating When the Installation is Complete
Installing the SDP Drivers
After the installation of the AD411x Eval+ evaluation software
is complete, a welcome window appears for the installation of
the SDP drivers. Take the following steps to install the SDP
drivers:
1. Click Next to proceed with the installation wizard.
24002-008
Figure 8. Welcome Window for SDP Drivers Installations
2. With the SDP board still disconnected from the USB port
of the PC, ensure that all other applications are closed, and
then click Install.
24002-009
Figure 9. Beginning the SDP Drivers Installation
3. To complete the driver installation, click Close, which
closes the installation setup wizard.
24002-010
Figure 10. Completing the SDP Drivers Setup Wizard
4. Before using the EVAL -AD4114SDZ, restart the PC.
24002-011
Figure 11. Restarting the PC

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Setting Up the System for Data Capture
After completing the steps in the Software Installation Procedures
section and the Evaluation Board Hardware section, set up the
system for data capture as follows:
1. Allow the Found New Hardware wizard to run after
connecting the SDP board to the PC. If using Windows X P,
it may be necessary to search for the SDP drivers. Choose
to automatically search for the drivers for the SDP board if
prompted by the operating system.
2. Check that the EVAL-AD4114SDZ is connected to the PC
correctly using the Device Manager of the PC. Access the
Device Manager as follows:
a. Right-click My Computer and then click Manage.
b. A dialog box appears asking for permission to allow
the program to make changes to the PC. Click Yes .
c. The Computer Management window appears. Click
Device Manager from the System Tools list (see
Figure 12).
d. If the SDP board appears under ADI Development
Tools in the TEST PC nested list, the driver software has
installed and the SDP board is connected to the PC
correctly.
24002-012
Figure 12. Checking if the SDP Board is Connected to the PC Correctly
Launching the Software
After completing the steps in the Setting Up the System for Data
Capture section, launch the AD411x Eval+ software as follows:
1. From the Start menu, click Programs > Analog Devices >
AD411x Eval+> AD411x Eval+.exe. The dialog box
shown in Figure 13 appears. Select AD4114 Evaluation
Board and the main window of the software shown in
Figure 16 appears.
24002-013
Figure 13. AD4114 Evaluation Board Selection
2. If the E VA L -AD4114SDZ is not connected to the USB port
via the SDP when the software is launched, the software
displays the dialog box shown in Figure 14. Connect the
EVAL -AD4114SDZ to the USB port of the PC, wait a few
seconds, then click Refresh, the dialog box shown in
Figure 13 then appears.
24002-014
Figure 14. Evaluation Board Selection, No Board Connected
3. The dialog box shown in in Figure 15 appears as a pop-up
over Figure 16. Quick start mode provides a simplified
version of the software that can be used as a starting point
for evaluating the AD4114. This mode provides a graphical
user interface (GUI) for setting up inputs, as shown in
Figure 16, and allows the user to configure the device
further by using the blue configuration + buttons (Label 7
in Figure 16).
4. Advanced mode can be used when more configurability of
the inputs is required. In this mode, the input GUI is not
available. However, the user has access to the Registerstab,
which provides full control of the AD4114 register map
(see Figure 17). When operating in advanced mode, the
user must consult the AD4114 data sheet.
24002-015
Figure 15. AD411x Eval+ Startup Mode Selection

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9 8
1
2
3
4
11
7
12
10
13
5
6
24002-016
Figure 16. Configuration Tab in Quick Start Mode