DS4424EVKIT [MAXIM]
Fully Assembled and Tested;
| 型号： | DS4424EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Fully Assembled and Tested |
| 文件： | 总10页 (文件大小：536K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
General Description
The DS4422 and DS4424 contain two or four I C-
programmable current DACs that are each capable of
sinking and sourcing current up to 200μA.
Features
2
● Easy Evaluation of the DS4424
● EV Kit Hardware is USB Powered
● USB HID Interface
The DS4424 evaluation kit (EV kit) provides the hardware
and software graphical user interface (GUI) necessary to
evaluate the DS4424 4-channel, 7-bit sink/source current
DAC. The DS4422 has the same performance as the
DS4424, except with only two channels.
● Windows XP®- and Windows® 7-Compatible
Software
● RoHS Compliant
● Proven PCB Layout
● Fully Assembled and Tested
The EV kit includes a DS4424 installed, as well as two pop-
ulated full-scale calibration resistors (R3 and R4) and two
unpopulated resistors (R5 and R6). This allows the device
to be evaluated without any board rework on two channels
but enables a custom-defined value to be populated on the
EV Kit Contents
● Assembled Circuit Board Including DS4424
2
two open channels. The EV kit also has the USB-to-I C
Ordering Information appears at end of data sheet.
interface required to communicate to the device.
DS4424 EV Kit Photo
Windows and Windows XP are registered trademarks and
registered service marks of Microsoft Corporation.
19-6921; Rev 0; 2/14
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
3) Windows should automatically begin installing the
necessary device driver. The USB interface of the EV
kit hardware is configured as an HID device and there-
fore does not require a unique/custom device driver.
Once the driver installation is complete, a Windows
message appears near the System Icon menu,
indicating that the hardware is ready to use. Do not
attempt to run the GUI prior to this message. If you do,
then you must close the application and restart it once
the driver installation is complete. On some versions
of Windows, administrator privileges may be required
to install the USB device.
DS4424 EV Kit Files
FILE
DESCRIPTION
DS4424EVKitSoftwareInstall.EXE
Application program
Note: The .EXE file is downloaded as a .ZIP file.
Quick Start
Required Equipment
● DS4424 EV kit hardware
● Windows XP or Windows 7 PC
● USB port
4) Once the device driver installation is complete,
visit www.maximintegrated.com/evkitsoftware to
download the latest version of the EV kit software,
DS4424EVKitSoftwareInstall.ZIP. Save the EV kit
software to a temporary folder.
● Micro-USB cable
Note: In the following sections, software-related items are
identified by bolding. Text in bold refers to items directly
from the install or EV kit software. Text in bold and under-
lined refers to items from the Windows operating system.
5) Open the .ZIP file and double-click the .EXE file to run
the installer. A message box stating The publisher
could not be verified. Are you sure you want to run
this software? may appear. If so, click Yes.
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
6) The installer GUI appears. Click Next and then
Install. Once complete, click Close.
1) Place the EV kit hardware on a nonconductive
surface to ensure that nothing on the PCB gets
shorted together.
7) Go to Start
| All Programs. Look for the
DS44240EVKitSoftware folder and click on the
DS4424EVKitSoftware.EXE inside the folder.
2) Prior to starting the GUI, connect the EV kit hardware
to a PC using the Mini-USB cable, or equivalent. The
power LED (D20) should be green and the com LED
(D21) should be red and slowly flash orange.
8) When the GUI appears, the text in the bottom
right-hand corner should display EV Kit Hardware
Connected. The com LED (D21) on the EV kit board
should turn green.
Maxim Integrated
│ 2
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Detailed Description of Software
Figure 1. DS4424 EV Kit GUI
Software Startup
Status Log
If the DS4424 EV kit is connected when the software
is opened, the software first initializes the hardware to
communicate. The software then searches for all slave
The status log located at the bottom left-hand side of the
GUI displays all the actions the GUI performs. Whenever
2
an I C command is read or written, the action is
2
addresses on the I C bus and connects to the first valid
confirmed by the log. The log can be cleared by clicking
slave address. The GUI displays EV Kit Hardware
Connected in the bottom right-hand corner. If the EV
kit is not connected on software startup, then the GUI
populates with default EV kit values. Once the EV kit is
connected, the GUI executes the sequence above.
on the Clear button.
Status Tab
The Status tab, located on the bottom of the GUI,
displays the current status, EV kit software version, and
whether or not the hardware is connected.
Menu and Status Bar
Communicating with the Device
The File menu item contains an exit option. To exit, select
Exit. The Device menu item allows the user to connect
to a desired device. Find Slave Addresses searches for
In order to read and write from the selected slave
address, there are two buttons labeled Read and Write.
Clicking the Read button updates the four register values
displayed on the GUI. All values are represented in a
hexadecimal format. To send data, type or use the up/
down arrows to adjust the registers to the appropriate
values. Then click the Write button.
2
all slave addresses connected to the I C bus. To select
a device, click Select Slave Address and all the slave
addresses found are shown and are selectable.
Maxim Integrated
│ 3
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Detailed Description of Hardware
Troubleshooting
All efforts have been made to ensure that each kit works
on the first try, right out of the box. In the rare occasion
that a problem is suspected, see Table 3 to help trouble-
shoot the issue.
Changing the Slave Address
The slave address for the DS4424 can be changed by
changing the configuration of the jumpers on HDR1. Use
two jumpers to connect the A0 and A1 nodes to either
V
CC
or GND. The resulting address is shown in Table 1.
Table 1. Slave Addresses
SLAVE ADDRESS
A1
A0
20h
60h
A0h
E0h
GND
GND
GND
V
CC
V
V
GND
CC
V
CC
CC
Table 2. Description of LEDs
LED
COLOR
Red
DESCRIPTION
USB Power Fault: A fault occurred due to overvoltage limit, current limit, or thermal limit.
USB Power: USB power supply is on.
D20 (Power)
Green
Communication: After the software has initialized the hardware, the LED flashes red
when an I C command is received.
Red
2
D21 (Com)
Green
Initialized: Hardware has been initialized by software.
Table 3. Troubleshooting
SYMPTOM
CHECK
SOLUTION
If yes, then the electronic fuse is in a fault state. Inspect for
electrical shorts on the PCB and make sure that the PCB is
not sitting on a conductive surface.
Is the LED labeled D20 red?
If not, then exit the GUI and try running it again. If D20 still
does not turn green, then exit the GUI and try connecting the
USB cable to a different USB port on the PC and wait for a
Windows message that states the hardware is ready to use.
Run the GUI again.
GUI says hardware not
found
Does the LED labeled D21 turn
green when the GUI is running?
If not, then the PCB may not be getting power from the USB.
Try a different USB cable or a different USB port.
Are any of the LEDs illuminated?
Maxim Integrated
│ 4
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Component List
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
R201, R202,
R214
0.1μF ±10%, 100V ceramic
capacitors (0805)
3
0Ω ±1% resistors (0805)
C1, C212
2
TDK CGA4J2X7R2A104K
R203, R205
R204
2
1
1
1
2
1
0
560Ω ±1% resistors (0805)
100kΩ ±1% resistor (0805)
45.3kΩ ±1% resistor (0805)
10kΩ ± 1% resistor (0805)
330Ω ±1% resistors (0805)
2.2kΩ ±1% resistor (0805)
Do not populate
10μF ±10%, 16V ceramic
capacitors (0805)
Taiyo Yuden
C201, C202,
C204
R206
3
R207
EMK212ABJ106KD-T
R211, R212
R213
0.01μF ±10%, 100V ceramic
capacitors (0805)
Murata GRM21BR72A103K
C203, C214
C211
2
1
Ref1
Red test points
Keystone 5010
1.0μF ±10%, 50V ceramic
capacitor (0805)
TDK C2012X7R1H105K/SOFT
TP1, TP9, TP10
TP2
3
1
6
Black test point
Keystone 5011
0.22μF ±10%, 50V ceramic
capacitor (0805)
TDK C2012X7R1H224K
White test points
Keystone 5012
C213
C215
1
1
2
TP3–TP8
2-/4-channel, I2C, 7-bit sink/
source current DAC
(10 TDFN-EP*)
Maxim DS4424N+
Do not populate, ceramic
capacitor
U1
1
Dual red/green LEDs (0805)
Knightbright
D20, D21
APHBM2012SURKCGKC
Microcontroller (28 SO)
Microchip PIC18LF2550-I/SO
U20
U21
1
1
30V, 3A Schottky diode (MINI2)
Panasonic SSG DB2W31900L
D22
HDR1
J20
1
1
1
1
50mA to 600mA programmable
current-limit switch (6 SOT23)
Maxim MAX4995AAUT+
6-pin, dual-row header
3M 961206-6404-AR
500mA low-noise LDO regulator
8 TDFN-EP*)
Maxim MAX8902BATA+
USB micro-B receptical
Molex 105017-0001
U22
1
1
2-pin, single-row header
3M 961102-6404-AR
J21
48MHz, 3.3V oscillator, 3.2mm x
2.5mm SMD
AVX KC3225A48.0000C30E00
X1
R1, R2, R210
3
1
1
4.7kΩ ±1% resistors (0805)
38.3kΩ ±1% resistor (0805)
154kΩ ±1% resistor (0805)
R3
R4
*EP = Exposed pad.
Not populated, to allow user to
select the full-scale calibration
current for these outputs
R5, R6
0
Maxim Integrated
│ 5
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
3 T U O
2 T U O
1 T U O
0 T U O
Figure 2a. DS4244 EV Kit Schematic (Sheet 1 of 2)
Maxim Integrated
│ 6
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
B 0 2 D
n e e r G
1
2
n e e r G
d e R
Figure 2b. DS4244 EV Kit Schematic (Sheet 2 of 2)
Maxim Integrated
│ 7
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Figure 3. DS4244 EV Kit PCB Layout—Top
Figure 4. DS4244 EV Kit PCB Layout—Bottom
Maxim Integrated
│ 8
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Ordering Information
PART
TYPE
DS4424EVKIT#
EV Kit
#Denotes an RoHS-compliant device that may include lead(Pb)
that is exempt under the RoHS requirements.
Maxim Integrated
│ 9
www.maximintegrated.com
Evaluates: DS4422/DS4424
DS4424 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
2/14
Initial release
—
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2014 Maxim Integrated Products, Inc.
│ 10
相关型号：
DS4424N+T&R
D/A Converter, 1 Func, Serial Input Loading, 3 X 3 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, TDFN-14
MAXIM
©2020 ICPDF网 联系我们和版权申明