ANALOG DEVICES EVAL-AD5683RARDZ Typical Evaluation Board User Guide
- June 1, 2024
- Analog Devices
Table of Contents
ANALOG DEVICES EVAL-AD5683RARDZ Typical Evaluation Board
FEATURES
- Full-featured evaluation boards for the AD5683R (SPI) and AD5693R (I2C)
- On-board reference
- Various link options
- PC control in conjunction with the Analog Devices, Inc., EVALSDP-CK1Z (SDP-K1) controller board
EVALUATION KIT CONTENTS
- EVAL-AD5683RARDZ (SPI) or EVAL-AD5693RARDZ (I2C) evaluation board
- AD5683R (SPI) or AD5693R (I2C) device
HARDWARE REQUIRED
- EVAL-SDP-CK1Z (SDP-K1) controller board, which must be purchased separately
SOFTWARE REQUIRED
- Analysis | Control | Evaluation (ACE) Software, which is available for download from the EVAL-AD5683RARDZ (SPI) or EVALAD5693RARDZ (I2C) product page
GENERAL DESCRIPTION
This user guide details the operation of the EVAL-AD5683RARDZ (serial peripheral interface (SPI)) evaluation board and the EVALAD5693RARDZ (I2C) evaluation board for the AD5683R (SPI) and the AD5693R (I2C), respectively, which are both single-channel, serial voltage output digital-to-analog converters (DACs). The EVAL-AD5683RARDZ and the EVAL-AD5693RARDZ are designed to facilitate quick prototyping of the AD5683R and AD5693R circuits, thereby reducing design time.
Both devices operate from a single 2.7 V to 5.5 V supply. Additionally, these devices also incorporate an internal 2.5 V on-board reference. A different reference voltage can be applied via the EXT_REF SMB connector if required. While sharing common features, the two DACs differ in their digital interface protocols. The AD5683R employs SPI, while the AD5693R employs I2C.
The EVAL-AD5683RARDZ and the EVAL-AD5693RARDZ interface with the USB port of a PC via the System Demonstration Platform (SDP) controller board (EVAL-SDP-CK1Z (SDP-K1)). The Analysis | Control | Evaluation (ACE) software is available for download from both the EVAL-AD5683RARDZ product page and the EVALAD5693RARDZ product page. This software can be used with either evaluation board to allow the user to program the AD5683R and AD5693R, respectively. A PMOD connection is also available to allow the connection of a microcontroller to either evaluation board. Note that when a microcontroller is used through the PMOD
TYPICAL EVALUATION BOARD SETUP
The EVAL-AD5683RARDZ and the EVAL-AD5693RARDZ both require the EVAL-SDP-CK1Z (SDP-K1) controller board, which is available for purchase from Analog Devices. For full details on the AD5683R and the AD5693R, see the AD5683R and AD5693R data sheets, which must be consulted in conjunction with this user guide when using either of the EVALAD5683RARDZ or the EVAL-AD5693RARDZ evaluation boards.
GETTING STARTED
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INSTALLING THE SOFTWARE
The EVAL-AD5683RARDZ and EVAL-AD5693RARDZ evaluation boards use the Analysis |
Control | Evaluation (ACE) software, a desktop software application that
allows the evaluation and control of multiple evaluation systems. The ACE
software is available for download on the EVALAD5683RARDZ or EVAL-AD5693RARDZ
evaluation board page and must be installed before connecting the EVAL-SDP-
CK1Z (SDP-K1) controller board to the USB port of the PC to ensure that the
EVAL-SDP-CK1Z (SDP-K1) is recognized when it connects to the PC.
Note that the ACE software installs all the necessary SDP drivers and the Microsoft® NET Framework 4 by default. For full instructions on how to install and use this software, see the ACE software page on the Analog Devices website. After the ACE software installation is completed and the software is opened, the EVAL-AD5683RARDZ or EVAL-AD5693RARDZ evaluation board plugin appears.
INITIAL SETUP
To set up the EVAL-AD5683RARDZ or EVAL-AD5693RARDZ evaluation board, take the
following steps:
- Connect the EVAL-AD5683RARDZ or EVAL-AD5693RARDZ to the EVAL-SDP-CK1Z (SDP-K1) controller board and then connect a USB cable between the SDP-K1 and the PC.
- Run the ACE software, and the main window appears as shown in Figure 2.
- The EVAL-AD5683RARDZ or EVALAD5693RARDZ board plugins appear in the Attached Hardware section of the Start tab.
- Double-click the board plugin to open the board view shown in Figure 3.
- Double-click the AD5683R or AD5693R chip to access the chip view as shown in Figure 4.
- This view provides a basic representation of the functionality of the board. See Figure 5 and Table 1 for the details on the main function blocks of the board.
BLOCK DIAGRAM AND DESCRIPTION
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The EVAL-AD5683RARDZ or EVAL-AD5693RARDZ software is organized so that it
appears similar to the functional block diagram shown in the data sheets. In
this way, it is easy to correlate the functions on the board with the
descriptions in the data sheets. A full description of each block, register,
and its settings is given in the AD5683R or AD5693R data sheets. Some of the
blocks and their functions are described in this section as they pertain to
the EVAL-AD5683RARDZ or EVALAD5693RARDZ. The block diagram is shown in Figure
5, and Table 1 describes the functionality of each block.
Table 1. Block Diagram Functions
A| CONFIGURATION| This function is used to set the initial configuration
for the evaluation board. Select the reference gain case from the Output
Gain dropdown menu. A gain of 1 is the default. For a gain of 2, an external
supply is needed (VDD = VREF + 1.5 V). After setting up the initial
configuration, click Apply Changes (J) to apply the values. These settings
can be modified at any stage while evaluating the board.
---|---|---
B| LDAC and RESET (GPIO
buttons)
| The LDAC and RESET buttons act as external GPIO pulses to the LDAC
and RESET pins. The LDAC button transfers data from the input registers
(D) to the DAC registers (E). The RESET button clears all data from input
registers and DAC registers. These buttons are live; therefore, there is no
need to click Apply Changes (J).
C| Select a Command| The Select a Command dropdown menu controls how
the data transfer to the device affects the input and DAC registers. When a
data value is entered in an input register (D), it can be transferred to one
or both of the internal DAC registers. The data transfer can be either to the
DAC input register only or to both the DAC input register and the DAC register
simultaneously. If both registers are updated, the channel DAC register (E)
shows the new value.
D| Input register| This function is used to select the 16-bit data-word to
transfer to the device. Then, click Apply Changes (J) to transfer the
selected 16-bit data-word to the device.
E| DAC register| This box displays the value that is currently present in the
DAC register on the device. Selecting the appropriate command option or toggle
LDAC (B) to update the DAC register.
F| Software RESET| Click Software RESET to return the evaluation
board and software to their default values. This button is live; therefore,
there is no need to click Apply Changes (J).
G| Load DAC| Click Load DAC to individually control which channel
loads the values from the input register to the DAC register.
H| DAC| The DAC configuration options provide access to individual
channel configuration options, such as power-down options and hardware LDAC
mask enable and disable settings.
I| Internal Reference| In the Internal Reference area, select
Enable from the dropdown menu to enable the on-chip reference for the
evaluation board. If Disable is selected, an external reference must be
applied.
J| Apply Changes| Click Apply Changes to update the device with all
the modified values. However, if there is no evaluation board connected, the
input register value is not transferred to the DAC register.
BLOCK DIAGRAM AND DESCRIPTION
analog.com Rev. 0 | 5 of 13 MEMORY MAP All registers are
fully accessible from the memory map tab. The memory map allows registers to
be edited at a bit level. The bits shaded in dark grey are read-only bits and
cannot be accessed
from ACE. All other bits are toggled. Click Apply Changes to transfer data to
the device. All changes here correspond to the block diagram; for example, if
the internal register bit is enabled, it shows as enabled on the block
diagram. Any bits or registers that are in bold are modified values that have
not been transferred to the evaluation board. After clicking Apply Changes,
data is transferred to the evaluation board.
EVALUATION BOARD HARDWARE
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Before applying power and signals to the EVAL-AD5683RARDZ or EVAL-AD5693RARDZ,
ensure that all link positions are as required by the operating mode. The two
modes available for operating the evaluation board are in SDP control mode,
which must be used with the EVAL-SDP-CK1Z (SDP-K1), or standalone mode where
an external supply must be provided.
POWER SUPPLIES
The EVAL-AD5683RARDZ and EVAL-AD5693RARDZ evaluation boards provide an
on‑board, 3.3 V regulator powered through the USB supply. If the evaluation
board is controlled through a PMOD or a gain of 2 is required, an external
supply must be provided via the EXT_VDD connectors. See Table 2 and the power
requirements specifications in the AD5683R or AD5693R data sheets for
additional details. Both the AGND and DGND inputs are provided on the board.
The AGND and DGND planes are connected at one location close to the AD5683R or AD5693R. To avoid ground loop problems, it is recommended that AGND and DGND not be connected elsewhere in the system. All supplies are decoupled to the ground with 10 µF and 0.1 µF capacitors.
Table 2. Power Supply Connectors
EXT_VDD, Pin 1
EXT_VDD, Pin 2
EXT_REF, SMB Connector
| EXT_VDD EXT_VDD
EXT_REF
| External analog power supply from 2.7 V to 5.5 V, VDD. Analog ground.
External voltage reference supply.
---|---|---
LINK CONFIGURATION OPTIONS
Several link and switch options are incorporated into the EVAL-AD5683RARDZ or
EVAL-AD5693RARDZ evaluation board and must be set for the required operating
conditions before using the board. The link function options are described in
Table 4. Table 3 lists the positions of the different links controlled by the
PC via the USB port, and an SDP controller board operating in single-supply
mode is required.
Table 3. Link Options Setup for SDP-K1 Control (Default)
Table 4. Link Functions
EVALUATION BOARD SCHEMATICS AND ARTWORK
ORDERING INFORMATION
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BILL OF MATERIALS
Table 5. Bill of Materials
1| U1| Tiny 16-bit SPI nanoDAC+, with ±2 (16-bit) LSB INL and 2 ppm/°C| Analog
Devices, AD5683R or
AD5693R
---|---|---|---
| | reference|
1| U3| Ultra-low noise, high accuracy 2.5 V voltage reference| Analog Devices,
ADR4542DEZ
1| U5| 150 mA, low quiescent current, complementary metal-oxide| Analog
Devices, ADP121-AUJZ33
| | semiconductor (CMOS) linear regulator in 5-lead TSOT or 4-ball|
| | WLCSP|
1| U6| IC, 32 KBIT serial, electrically erasable programmable read-only|
Generic
| | memory (EEPROM)|
2| AGND, DGND| Connector, printed circuit board (PCB), black test points|
Generic
4| C1, C8, C10, C11| 0.1 μF ceramic capacitors, 16 V, 10%, X7R, 0603| Generic
3| C12, C21, C23| 0.1 μF ceramic capacitors, 50 V, 10%, X7R, 0603| Generic
1| C22| 10 μF ceramic capacitor, 6.3 V, 20%, X5R, 0603| Generic
3| C4, C5, C24| 1 μF ceramic capacitors, 16 V, 10%, X7R, 0603| Generic
1| C34| 4.7 μF ceramic capacitor, 10 V, 20%, X5R, 0603| Generic
2| C7, C9| 10 μF ceramic capacitors, 10 V, 20%, X5R, 0603| Generic
1| EXT_VDD| Connector-PCB, 2-position terminal block, side entry, 5 mm pitch|
Generic
1| L2| Inductor, ferrite bead, 600 Ω, 25%, 100 MHz, 2.9 A, 0.038 Ω,| Generic
| | 1206, AEC-Q200|
5| LDACB, RESETB, SCLK/A0, SDIN/SDA,| Connector-PCB, white test points|
Generic
| SYNCB/SCL| |
2| P4, P7| Connector-PCB, receptacles, 25 mil square post, 2.54 mm pitch|
Generic
1| P5| Connector-PCB, receptacle, 25 mil square post, 2.54 mm pitch| Generic
1| P6| Connector-PCB, receptacle, 25 mil square post, 2.54 mm pitch| Generic
4| R1, R2, R8, R25| 100 kΩ resistors, surface-mounted device (SMD), 1%, 1/10
W,| Generic
| | 0603|
2| R14, R24| 0 Ω resistors, SMD, jumper, 1/16 W, 0402| Generic
1| R21| 1.6 Ω resistor, SMD, 1%, 1/5 W, 0603, AEC-Q200| Generic
1| R22| 0 Ω resistor, SMD, jumper, ½ W, 0805, AEC-Q200, pulse proof| Generic
2| REF_SEL, VDD_SEL| Connector-PCB, high temperature, 3-position, male
headers,| Generic
| | unshrouded, single row, straight, 2.54 mm pitch, 3.05 mm solder|
| | tail|
4| VDD, VLOGIC, VOUT, VREF| Connector-PCB, red test points| Generic
1| VDD_VIO| Connector-PCB, header, 1 row, 2 way| Generic
4| R4, R7, R10, R18| 0 Ω resistors, SMD, jumper, 1/10 W, 0603| Generic-
Pref/install for EVAL-
| | | AD5683RARDZ
5| R5, R9, R13, R17, R19| 0 Ω resistors, SMD, jumper, 1/10 W, 0603| Generic-
Pref/install for EVAL-
| | | AD5693RARDZ
4| R4, R7, R10, R18| 0 Ω resistors, SMD, jumper, 1/10 W, 0603, Do not insert
(DNI) or| Not applicable
| | do not populate (DNP) for EVAL-AD5693RARDZ|
6| R5, R9, R11, R13, R17, R19| 0 Ω resistors, SMD, jumper, 1/10 W, 0603, DNI
or DNP for| Not applicable
| | EVAL-AD5683RARDZ|
1| C2| 0.1 μF ceramic capacitor, 16 V, 10%, X7R, 0603, DNI or DNP for| Not
applicable
| | both boards|
1| C6| 10 nF ceramic capacitor, 200 V, 10%, X7R, 0805, FLEXITERM®,| Not
applicable
| | DNI or DNP for both boards|
2| EXT_REF, V_OUT| Connector-PCB, coax, SMB, jacks, RF vertical, PC mount
gold,| Not applicable
| | DNI or DNP for both boards|
1| PMOD| Connector-PCB, BERG, header, straight, male, 12 position, DNI or| Not
applicable
| | DNP for both boards|
1| R12| 2 kΩ resistor, SMD, 1%, 1/8 W, 0805, AEC-Q200, DNI or DNP for both
boards| Not applicable
---|---|---|---
1| R15| 0 Ω resistor, SMD, jumper, 1/16 W, 0402, DNI or DNP for both boards|
Not applicable
1| R16| 100 kΩ resistor, SMD, 1%, 1/10 W, 0603, AEC-Q200, DNI or DNP
for both boards
| Not applicable
1| R3| 100 kΩ resistor, SMD, 1%, 1/10 W, 0603, DNI or DNP for both boards| Not
applicable
- Generic indicates that any part with the specified value, size, and rating can be used.
- C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors)
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-energy ESD. Therefore, proper ESD precautions should be
taken to avoid performance degradation or loss of functionality.
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