User's Guide
SBAU192A – July 2011 – Revised February 2016
ADS8638EVM-PDK
ADS8638EVM-PDK
This user's guide describes the characteristics, operation, and use of the ADS8638EVM, both by itself and
as a part of the ADS8638EVM-PDK. This evaluation module (EVM) is designed to feature the ADS8638
but can also support the ADS8614, ADS8618, or ADS8634 if installed. This family of devices includes
either an 8- or 12-bit, 1-MHz, multi-channel, successive approximation register (SAR) analog-to-digital
converters (ADCs). The EVM allows evaluation of all aspects of the ADS8638 device. A complete circuit
description as well as schematic diagram and bill of materials are included.
The following related documents are available for download through the Texas Instruments web site at
http://www.ti.com.
Table 1. EVM-Related Device Data Sheets
Device
Literature Number
ADS8638
SBAS541A
OPA140
SBOS498A
OPA379
SBOS347D
REF5025
SBOS410E
SN74LVC1G17D
SCES351R
ADCPro is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.
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Contents
EVM Overview ............................................................................................................... 3
Analog Interface.............................................................................................................. 4
Digital Interface .............................................................................................................. 5
Power Supplies .............................................................................................................. 5
EVM Operation ............................................................................................................... 6
ADS8638EVM-PDK Kit Operation ......................................................................................... 7
Evaluating Performance with the ADCPro Software ................................................................... 14
EVM Bill of Materials, Schematic, and Layout.......................................................................... 20
List of Figures
15
................................................................................ 7
ADS8638EVM-PDK Installer ............................................................................................... 8
Completed ADS8638EVM-PDK Installer ................................................................................. 8
MMB0 Initial Setup........................................................................................................... 9
Connecting ADS8638EVM to MMB0 .................................................................................... 10
Laboratory Power-Supply Connections ................................................................................. 11
NI-VISA Driver Installation ................................................................................................ 12
ADS86xxEVM-PDK Plug-in ............................................................................................... 13
Device Configuration ....................................................................................................... 15
Channels Tabs.............................................................................................................. 17
GPIOs & Alarms Tab ...................................................................................................... 18
ADS8638EVM PCB: Top Layer .......................................................................................... 21
ADS8638EVM PCB: Mid Layer........................................................................................... 22
ADS8638EVM PCB: Ground Layer ...................................................................................... 22
ADS8638EVM PCB: Bottom Layer ...................................................................................... 23
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EVM-Related Device Data Sheets
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ADS8638EVM Default Jumper Locations
List of Tables
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5
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J1: Analog Interface Header ............................................................................................... 4
J2: Serial Interface Header ................................................................................................. 5
J3: Power-Supply Interface Header ....................................................................................... 5
JP3 Configuration: Power Options ........................................................................................ 6
Bill of Materials ............................................................................................................. 20
ADS8638EVM-PDK
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EVM Overview
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1
EVM Overview
1.1
Features
ADS8638EVM:
• Full-featured evaluation board for the ADS8638 SAR ADC
• Contains all support circuitry needed for the ADS8638
• Optional onboard external REF5025 reference source
• Compatible with the TI Modular EVM System
ADS8638EVM-PDK:
• Easy-to-use evaluation software for Microsoft® Windows® XP operating system
• Data collection to text files
• Built-in analysis tools including scope, FFT, and histogram displays
• Complete control of board settings
• Easily expandable with new analysis plug-in tools from Texas Instruments
For use with a computer, the ADS8638EVM-PDK is also available. This kit combines the ADS8638 board
with the DSP-based MMB0 motherboard, and includes ADCPro™ software for evaluation.
The MMB0 motherboard allows the ADS8638EVM to be connected to the computer via an available USB
port. This manual shows how to use the MMB0 as part of the ADS8638EVMPDK, but does not provide
technical details about the MMB0 itself.
ADCPro is a program for collecting, recording, and analyzing data from ADC evaluation boards. It is based
on a number of plug-in programs, so it can be expanded easily with new test and data collection plug-ins.
The ADS8638EVM-PDK is controlled by a plug-in running in ADCPro. For more information about
ADCPro, see the ADCPro™ Analog-to-Digital Converter Evalutation Software User's Guide (literature
number SBAU128), available for download from the TI web site.
This manual covers the operation of both the ADS8638EVM and the ADS8638EVM-PDK. Throughout this
document, the abbreviation EVM and the term evaluation module are synonymous with the
ADS8638EVM. For clarity of reading, the rest of this manual will refer only to the ADS8638EVM or
ADS8638EVM-PDK, but operation of the EVM and kit for the ADS8614, ADS8618, and ADS8634 is
identical, unless otherwise noted.
1.2
Introduction
The ADS8638 is a 12-bit, eight-channel, 1-MHz SAR ADC with a serial peripheral interface (SPI™). The
ADC uses a capacitor-based switching method to create an adjustable input voltage range option.
Additionally, the device features two preset alarms with hysteresis per channel. During normal operation,
the ADS8638 dissipates a mere 22.5 mW at 5-V AVDD and ±15-V high voltage supplies.
The ADS8638EVM is an evaluation module built to the TI Modular EVM System specification. It can be
connected to any modular EVM system interface card.
The ADS8638EVM is available as a stand-alone printed circuit board (PCB) or as part of the
ADS8638EVM-PDK, which includes an MMB0 motherboard and software. As a stand-alone PCB, the
ADS8638EVM is useful for evaluating designs and firmware.
Note that the ADS8638EVM has no microprocessor and cannot run software. To connect it to a computer,
some type of interface is required.
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Analog Interface
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Analog Interface
For maximum flexibility, the ADS8638EVM is designed for easy interfacing to multiple analog sources.
Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual
row header/socket combination at J1. This header/socket provides access to the analog input pins of the
ADC. Consult Samtec at www.samtec.com or call 1-800-SAMTEC-9 for a variety of mating connector
options. Table 2 shows the pinout of the analog input connector, J1.
Table 2. J1: Analog Interface Header
Pin Number
Signal
Description
J1.2
AIN7 / NC
ADC analog input (AIN7: ADS8x38, NC: ADS8x34)
J1.4
AIN6 / NC
ADC analog input (AIN6: ADS8x38, NC: ADS8x34)
J1.6
AIN5 / AIN3
ADC analog input (AIN5: ADS8x38, AIN3:
ADS8x34)
J1.8
AIN4 / AIN2
ADC analog input (AIN4: ADS8x38, AIN2:
ADS8x34)
J1.10
AIN3 / AIN1
ADC analog input (AIN3: ADS8x38, AIN1:
ADS8x34)
J1.12
AIN2 / AIN0
ADC analog input (AIN2: ADS8x38, AIN0:
ADS8x34)
J1.14
AIN1 / NC
ADC analog input (AIN1: ADS8x38, NC: ADS8x34)
J1.16
AIN0 / NC
ADC analog input (AIN0: ADS8x38, NC: ADS8x34)
J1.1-19 (odd)
GND
J1.15
VREFOUT
J1.18
NC
J1.20
Ext VREF
Analog ground connections (except J1.15)
Buffered reference output
—
External reference voltage input
The eight ADC analog inputs (four inputs for ADS8x34 devices) are available at the J1 header. All of these
inputs, with the exception of one, are routed directly from the J1 header to the ADC. The AIN2/AIN0
channel includes an OPA140 to help drive one of the analog input channels to show the proper way to
drive the ADC. The op amp is in unity gain, and includes a RC low-pass filter component before reaching
the ADC.
An external reference can be applied to the ADC via an external source using pin J1.20. This signal is
routed directly to JP2 where it can be jumped in to the VREFP line.
An OPA379 is located on the EVM to buffer the reference signal and output it on J1.15.
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Digital Interface
3.1
Serial Data Interface
Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual
row header/socket combination at J2. This header/socket provides access to the digital control pins of the
EVM. Consult Samtec at www.samtec.com or 1-800-SAMTEC- 9 for a variety of mating connector options.
Table 3 describes the J2 serial interface pins.
Table 3. J2: Serial Interface Header
Pin Number
4
Signal
Description
J2.1
CS
J2.2
GPIO
ADC CS signal: controlled by jumper JP1
ADC PD / Alert signal
J2.3
SCLK
ADC SCLK signal
J2.4
GND
Digital ground
J2.5
SCLK
ADC SCLK signal
J2.7
CS
ADC CS signal: controlled by jumper JP1
J2.9
CS
ADC CS signal: controlled by jumper JP1
J2.10
GND
Digital ground
J2.11
SDI
ADC SDI signal
J2.13
SDO
ADC SDO signal
J2.16
SCL
I2C clock line for EEPROM
J2.18
GND
Digital ground
J2.20
SDA
I2C data line for EEPROM
Power Supplies
J3 is the power-supply input connector. Table 4 lists the configuration details for J3.
Table 4. J3: Power-Supply Interface Header
Pin Number
Pin Name
J3.1
+VA
High voltage positive
analog supply
Function
Yes
J3.2
–VA
High voltage negative
analog supply
Yes
J3.3
+5VA
5-V analog supply
Yes
J3.4
–5VA
Unused
No
J3.5
GND
Digital ground input
Yes
J3.6
GND
Analog ground input
Yes
J3.7
+1.8VD
1.8-V digital supply
Yes/Optional
J3.8
VD1
J3.9
+3.3VD
J3.10
+5VD
Unused
Required
No
3.3-V digital supply
Yes/Optional
Unused
Yes/Optional
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Power Supplies
4.1
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Power Options
JP3 is in place for current measurement in order to regulate the power consumption of the ADS8638.
When current measurement is not taking place, jumpers must be applied across many of the jumpers to
properly power the ADC. Table 5 lists the power option details for JP3.
Table 5. JP3 Configuration: Power Options
Row
Name
Function
1-2
ADC HVDD
Supply current measurement point for high
voltage positive rail. Must be connected for
operation.
3-4
ADC HVEE
Supply current measurement point for high
voltage negative rail. Must be connected for
operation.
5-6
ADC +5 VA
Supply current measurement point for +5VA voltage rail. Must be connected for
operation.
7-8
GND
9-10
ADC +3.3 VD
Ground points for EVM board
Supply current measurement point for 3.3-V
digital supply rail. Must be connected for
ADC use with DVDD = 3.3 V. Do not
connect if +5-VD jumper is installed.
11-12
ADC +1.8 VD
Supply current measurement point for 1.8V
digital supply rail. Must be connected for
ADC use with DVDD = 1.8 V. Do not
connect if +3.3-VD jumper is installed.
The ADS8638EVM has the option to either set +1.8 VD or +3.3 VD as the ADS8638 DVDD supply. Install
a jumper across pins 9-10 to set DVDD = 3.3 V, or install a jumper across pins 11-12 to set DVDD =
1.8 V.
CAUTION
Do not install both jumpers. Doing so may cause damage to the board or ADC
device itself.
4.2
Reference Voltages
The ADS8638EVM can be configured to use the internal reference voltage found within the chip, an
onboard REF5025 reference source, or use the option to input an external reference source. Jumper JP2
is used to route the reference signal to the ADC. When placed in the 1-2 position, the onboard REF5025
is used as the reference signal. When placed in the 2-3 position, an outside external reference can be
applied to J1.20 on the analog header to feed the ADC reference. If the ADC internal reference is
enabled, the shunt on jumper JP2 must be either in the 2-3 position or left disconnected. This
configuration ensures that the REF5025 source is not driving the ADS8638 reference pin when the pin is
configured as an output.
5
EVM Operation
This section provides information on the analog input, digital control, and general operating conditions of
the ADS8638EVM.
5.1
Analog Input
Each of the analog input sources can be applied directly to J1 (top or bottom side) or through signalconditioning modules available for the modular EVM system.
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5.2
Digital Control
The digital control signals can be applied directly to J2 (top or bottom side). The modular ADS8638EVM
can also be connected directly to a DSP or microcontroller interface board, such as the 5-6K Interface or
HPA-MCU Interface boards available from Texas Instruments, or the MMB0 if purchased as part of the
ADS8638EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the
ADS8638, see the relevant device product folder on the TI web site
5.3
Default Jumper Settings and Switch Positions
Figure 1 shows the jumpers found on the EVM and the respective factory default conditions for each.
Figure 1. ADS8638EVM Default Jumper Locations
6
ADS8638EVM-PDK Kit Operation
This section provides information on the analog input, digital control, and general operating conditions of
the ADS8638EVM.
6.1
Installing ADCPro Software
The latest software is available from the TI website at http://www.ti.com. Any updates to the ADCPro
software can also be downloaded directly from the TI web site (http://www.ti.com/adcpro) or the update
check command can be used. Refer to the ADCPro User Guide for instructions on installing and using
ADCPro.
To install the ADS8638EVM-PDK plug-in, run the file: ads86xx-adcproplugin-1.2.3.exe (1.2.3 is the
version number, and increments with software version releases). Double-click the file to run it; then follow
the instructions shown. You can also use the ADCPro Update Check feature to check for newer versions
of the ADS8638EVM-PDK plug-in, once you have installed a version of it.
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Figure 2 and Figure 3 show a set of installation screens to pass through as the ADS86xxEVM-PDK plug-in
is installed.
Figure 2. ADS8638EVM-PDK Installer
Continue through the pop-up screens until the plug-in is completely installed.
Figure 3. Completed ADS8638EVM-PDK Installer
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6.2
Setting Up the ADS8638EVM-PDK
The ADS8638EVM-PDK contains both the ADS8638EVM and the MMB0 motherboard; however, the
devices are shipped unconnected. Follow these steps to set up the ADS8638EVM-PDK.
Step 1. Unpack the ADS8638EVM-PDK kit.
Step 2. Set the jumpers and switches on the MMB0 as shown in Figure 4.
• Set the Boot Mode switch to USB.
• Connect +5 V and +5 VA on jumper block J13B (if +5 V is supplied from J14 +5 VA).
• Leave +5 V and +VA disconnected on jumper block J13A.
• If the PDK is powered using the included CA-2186 cable, connect J12. If the PDK is
powered through the terminal block, disconnect J12. (See Section 6.3 for details on
connecting the power supply.)
Figure 4. MMB0 Initial Setup
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Step 3.
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Plug the ADS8638EVM into the MMB0 as Figure 5 illustrates.
Figure 5. Connecting ADS8638EVM to MMB0
Step 4.
6.2.1
Set the jumpers on the ADS8638EVM as shown in Figure 1 (note that these settings are the
factory-configured default settings for the EVM).
About the MMB0
The MMB0 is a Modular EVM System motherboard. It is designed around the TMS320VC5507, a DSP
with an onboard USB interface from Texas Instruments. The MMB0 also has 16 MB of SDRAM installed.
The MMB0 is not sold as a DSP development board, and it is not available separately. TI cannot offer
support for the MMB0 except as part of an EVM kit. For schematics or other information about the MMB0,
contact Texas Instruments.
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6.3
Connecting the Power Supply
The ADS8638EVM-PDK requires multiple supplies to power the ADC to be used with the MMB0
motherboard. The ADS8638 requires two high-voltage supplies (±10 V to ±15 V), HVDD and HVEE, along
with a +5-V supply to power the analog, AVDD, and +3.3 V to +5 V to power the digital circuitry, DVDD.
When the MMB0 DSP is powered properly, LED D2 glows green. The green light indicates that the 3.3-V
supply for the MMB0 is operating properly. (It does not indicate that the EVM power supplies are
operating properly.)
6.3.1
Connecting the Laboratory Power Supply
A laboratory power supply can be connected through terminal block J14 on the MMB0, as shown in
Figure 6. To use a unipolar lab power supply configuration, follow these procedures:
• Disconnect J12 on the MMB0.
• Connect a +5-V dc supply to the +5 VD terminal on J14.
• Connect ground of the dc supply to the GND terminal on J14.
For bipolar mode, also connect a –10-V dc supply to the –VA, and +10 V on the +VA terminals on J14.
It is not necessary to connect a +5-V dc supply voltage to the +5 VA terminal on J14 if the +5 V/+5 VA
position on J13 is shorted.
Figure 6. Laboratory Power-Supply Connections
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6.4
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Running the Software and Completing Driver Installation
NOTE:
The software is continually under development. These instructions and screen images are
current at the time of this writing, but may not exactly match future releases.
The program for evaluating the ADS8638EVM-PDK is called ADCPro. This program uses plug-ins to
communicate with the EVM. The ADS8638EVM-PDK plug-in is included in the ADS8638EVM-PDK
package.
The program currently runs only on Microsoft Windows platforms of Windows XP; plans are in place to
have ADCPro working on Windows 7 in the near future.
If this is the first time installing ADCPro and any related plug-ins, follow these procedures to run the
ADCPro software and complete the necessary driver installation. Make sure the ADCPro software and
device plug-in software are the latest versions available online at www.ti.com/ADCPro.
6.4.1
NI-VISA USB Device Driver Installation
1. After the ADCPro software is installed, apply power to the PDK and connect the board to an available
PC USB port.
2. The computer should recognize the new hardware and begin installing the drivers for the hardware.
Figure 7 is provided for reference to show the installation steps. To simplify installation, accept the
default settings.
Figure 7. NI-VISA Driver Installation
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6.4.2
USBStyx Driver Installation
1. Start the software by selecting ADCPro from the Windows Start menu.
2. Select ADS86xxEVM from the EVM drop-down menu. The ADS86xxEVM-PDK plug-in appears in the
left pane. The setup is shown in Figure 8.
Figure 8. ADS86xxEVM-PDK Plug-in
3. The ADS86xxEVM-PDK plug-in window has a status area at the top of the screen. When the plug-in is
first loaded, the plug-in searches for the board. A series of messages will appear in the status area to
indicate this action.
4. If you have not yet loaded the operating system drivers, Windows displays the Install New Driver
Wizard sequence; accept the default settings.
NOTE: During the driver installation process, a message may appear that indicates the firmware
load has timed out. Click OK and continue driver installation. The plug-in will attempt to
download the firmware again once the driver installation completes.
5. Once Windows finishes installing the software driver, the plug-in downloads the firmware to the MMB0.
The status area displays Connected to EVM when the device is connected and ready to use. If the
firmware does not load properly, you can try resetting the MMB0 by pressing Reset and then reloading
the plug-in.
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Evaluating Performance with the ADCPro Software
The evaluation software is based on ADCPro, a program that operates using a variety of plug-ins. (The
ADS8638EVM plug-in is installed as described in the Installation section).
To use ADCPro, load an EVM plug-in and a test plug-in. To load an EVM plug-in, select it from the EVM
menu. To load a test plug-in, select it from the Test menu. To unload a plug-in, select the Unload option
from the corresponding menu. Only one of each kind of plug-in can be loaded at a time. If you select a
different plug-in, the previous plug-in is unloaded.
7.1
Using the ADS8638EVM-PDK Plug-in
The ADS8638EVM-PDK plug-in for ADCPro provides complete control over all settings of the ADS8638. It
consists of a tabbed interface, with different functions available on different tabs. These controls are
described in this section.
You can adjust the ADS8638EVM settings when you are not acquiring data. During acquisition, all
controls are disabled and settings may not be changed.
When you change a setting on the ADS8638EVM plug-in, the setting immediately updates on the board.
Settings on the ADS8638EVM correspond to settings described in the ADS8638 product data sheet
(available for download at www.ti.com).
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7.1.1
Plug-in Setup and The Device Config Tab
When the ADS86xxEVM plug-in is first loaded, you must select the device from the Device Selection tab
found in the basic settings window. The ADC options are not available on the plug-in until the device is
selected. Use Figure 9 for reference.
Figure 9. Device Configuration
After the ADC has been selected, the tabs on the left become available, including the plug-in options to
configure the ADC. The Device Config tab is the default window and includes some of the basic settings
to configure that ADC. Basic information, such as the Plug-in version and Firmware version, is shown here
along with some simple settings use to set up the ADC according to user preferences.
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The Data Rate control on the main plug-in window sets the data rate for the ADS8638. Changing the data
rate controls the time between sequential conversions once the acquisition period begins.
In the Basic Settings window, the Operating Mode and Input Range options are available. The plug-in was
designed to only use auto-mode channel sequencing, and therefore manual mode is not selectable. The
input range option allows the user to select the desired analog input voltage range from +5 V, +10 V,
±2.5 V, ±5 V, or ±10 V. This setting becomes the range for all the channels that are enabled at the time of
data acquisition.
The Power Blocks window includes buttons to enable the internal reference voltage and the internal
temperature sensor. By default, these two options are disabled and are enabled once the appropriate
button is selected.
The About this plug-in tab has the plug-in version history along with the firmware version. The Notes
indicator shows manufacturing information about the EVM that is stored in the EVM EEPROM, and may
show relevant notes about the plug-in or firmware code, if any.
At the bottom of the Device Config window is the PowerDown button. Use this button to direct the
processor to write the command that puts the ADC into power-down mode.
7.1.2
Channels 1-4 Tab and 5-8 Tab
These two tabs, as shown in Figure 10, are used to enable/disable the ADC channels as well as configure
the alarm states. By default, all of the eight channels are disabled. Before an acquisition can be
performed, at least one channel must be enabled. Once a channel is enabled, the alarm high and alarm
low thresholds can be set along with the respective hysteresis limits. As the converted result exceeds the
alarm threshold, the LED found on the EVM board should turn on to indicate an alarm.
As multiple channels are enabled, the effective data rate decreases. The ADS8638 uses an architecture
that relies on an internal cycling mux, requiring the conversions to be completed in a sequential order
rather than simultaneously. The data rate displayed in the top right corner of the plugin refers to all
enabled channels to be converted.
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Figure 10. Channels Tabs
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7.1.3
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GPIO & Alarms Tab
The GPIO & Alarms tab (as shown in Figure 11) includes some of the additional options found within the
ADS8638. Here, the software provides access to setting the GPIO as either a power-down input or an
alarm state output. This I/O line is routed to the onboard LED on the evaluation board to indicate when the
alarm is active.
Figure 11. GPIOs & Alarms Tab
The Temperature control is used to read back the temperature control and enable high and low alarms
along with hysteresis. When reading back the temperature reading, the result is read back in codes where
it must be converted to a temperature using the parameters described in the ADS8638 product data sheet.
The high and low alarms, along with hysteresis settings, behave the same way that the analog input
channel alarm settings do.
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After an acquisition, the Read Alarms button allows the user to read back the specific alarms that
reported a fault. When the button is pressed, the firmware uses the sticky register read command; once
the alarms are read, they are set back to zero. Each channel has two alarms, a high alarm and a low
alarm; both are placed side by side in the alarm list. When the Read Alarms button is pressed, the LED
corresponding to the alarm limit that was breached is enabled.
7.1.4
Collecting Data
Once you have configured the ADS8638 for your test scenario, press the ADCPro Acquire button to start
the collection of the number of data points specified in the Test plug-in Block Size control. The
ADS8638EVM-PDK plug-in disables all the front panel controls while acquiring, and displays a progress
bar.
7.2
Troubleshooting
If ADCPro stops responding while the ADS8638EVM-PDK is connected, try unplugging the power supply
from the PDK. Unload and reload the plug-in before reapplying power to the PDK.
SBAU192A – July 2011 – Revised February 2016
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Copyright © 2011–2016, Texas Instruments Incorporated
ADS8638EVM-PDK
19
EVM Bill of Materials, Schematic, and Layout
8
www.ti.com
EVM Bill of Materials, Schematic, and Layout
Table 6 contains a complete bill of materials for the modular ADS8638EVM. The schematic diagram is
also provided for reference. Figure 12 through Figure 15 show the PCB layouts.
8.1
Parts List
NOTE:
All components should be compliant with the European Union Restriction on Use of
Hazardous Substances (RoHS) Directive. Some part numbers may be either leaded or
RoHS. Verify that purchased components are RoHS-compliant. (For more information about
TI's position on RoHS compliance, see the Quality and Eco-Info information on the TI web
site.)
Table 6. Bill of Materials
20
Item
Qty
Ref Des
1
1
N/A
2
3
C1, C4,
C11
3
4
4
Description
MFR
Part Number
n/a
6520948
Capacitor, ceramic, 1.0 µF 16V 10% X5R 0603
Murata
GRM188R61C105KA93D
C2, C3,
C12, C13
Capacitor, ceramic, 10 µF 16V X5R 0805
Murata
GRM21BR61C106KE15L
4
C5, C8,
C15, C18
Capacitor, ceramic, 0.1 µF 16V 10% X7R 0603
Murata
GRM188R71C104KA01D
5
1
C6
Capacitor, ceramic, 1 µF 50V X7R 1206
Murata
GRM31CR71H105KA61L
6
3
C9, C10,
C19
Capacitor, ceramic, 10 µF 6.3V X5R 0603
Murata
GRM188R60J106ME47D
7
0
C7, C17
Not installed
8
1
C14
Capacitor, ceramic, 1000 pF 50V 5% C0G 0603
Murata
GRM1885C1H102JA01D
Printed wiring board
9
1
C16
Capacitor, tantalum, 10 µF 16V 10% SMD
10
1
D1
LED 565 nm, green diff 1206 SMD
Kemet
T494B106K016AT
Lumex Opto
SML-LX1206GW-TR
11
2
J1A, J2A
(Top Side)
10-pin, dual row, SM Header (20 Pos.)
Samtec
TSM-110-01-T-DV-P
12
2
J1B, J2B
(Bottom
Side)
10-pin, dual row, SM Header (20 Pos.)
Samtec
SSW-110-22-F-D-VS-K
13
1
J3A (Top
Side)
5-pin, dual row, SM Header (10 Pos.)
Samtec
TSM-105-01-T-DV-P
14
1
J3B
(Bottom
Side)
5-pin, dual row, SM Header (10 Pos.)
Samtec
SSW-105-22-F-D-VS-K
15
2
JP1, JP2
Header strip, 3-pin (1x3)
Samtec
TSW-103-07-L-S
16
1
JP3
Header ltrip, 12-pin (2x6)
Samtec
TSW-106-07-L-D
17
0
JP4
Not installed
18
1
JP5
2-position jumper _ .1" spacing
Samtec
TSW-102-07-T-S
19
4
R1, R2, R3, Resistor, 33 Ω 1/10W 5% 0603 SMD
R4, R7
Panasonic
ERJ-3GEYJ330V
20
5
R5, R6, R8, Resistor, 0 Ω 1/10W 5% 0603 SMD
R9, R12
Panasonic
ERJ-3GEY0R00V
21
2
R10, R11
Resistor, 20 Ω 1/10W 5% 0603 SMD
Panasonic
ERJ-3GEYJ200V
22
2
R13, R14
Resistor, 10 kΩ 1/10W 5% 0603 SMD
Panasonic
ERJ-3GEYJ103V
23
1
R15
Resistor, 470 Ω 1/10W 5% 0603 SMD
Panasonic
ERJ-3GEYJ471V
24
0
RA1
Not installed
25
2
TP1, TP2
Test point: single .025-Pin, Black
Keystone
5001
26
1
TP3
Test point: single .025-Pin, Red
Keystone
5000
27
1
U1
ADS8638, 8-channel 12-bit HV MUX SAR ADC
SPI
Texas
Instruments
ADS8638SRGER
ADS8638EVM-PDK
SBAU192A – July 2011 – Revised February 2016
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Copyright © 2011–2016, Texas Instruments Incorporated
EVM Bill of Materials, Schematic, and Layout
www.ti.com
Table 6. Bill of Materials (continued)
Item
Qty
Ref Des
MFR
Part Number
28
1
U2
Precision voltage reference 2.5 V, 8SOIC
Texas
Instruments
REF5025AID
29
1
U3
IC Op Amp GP R-R 90 kHz SOT23-5
Texas
Instruments
OPA379AIDBVT
30
1
U4
IC Op Amp GP R-R 80 MHz SGL 8SOIC
Texas
Instruments
OPA140AID
31
1
U5
Logic Single Schmitt-Trigger Buffer
Texas
Instruments
SN74LVC1G17DBVR
32
1
U6
IC EEPROM 256Kbit 400 kHz 8TSSOP
Microchip
24AA256-I/ST
33
6
N/A
Shunt Jumper .1" Black gold
3M
969102-0000-DA
8.2
Description
Board Layouts
NOTE: Board layouts are not to scale. These images are intended to show how the board is laid out;
they are not intended to be used for manufacturing ADS8638EVM PCBs.
Figure 12. ADS8638EVM PCB: Top Layer
SBAU192A – July 2011 – Revised February 2016
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ADS8638EVM-PDK
21
EVM Bill of Materials, Schematic, and Layout
www.ti.com
Figure 13. ADS8638EVM PCB: Mid Layer
Figure 14. ADS8638EVM PCB: Ground Layer
22
ADS8638EVM-PDK
SBAU192A – July 2011 – Revised February 2016
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Copyright © 2011–2016, Texas Instruments Incorporated
Revision History
www.ti.com
Figure 15. ADS8638EVM PCB: Bottom Layer
Revision History
Changes from Original (July 2011) to A Revision ........................................................................................................... Page
•
•
•
Replaced reference of wall supply to external supply in the Setting Up the ADS8638EVM-PDK section. ................... 9
Modified the MMB0 Initial Setup image. ............................................................................................... 9
Modified the Laboratory Power-Supply Connections image. ...................................................................... 11
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
SBAU192A – July 2011 – Revised February 2016
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Copyright © 2011–2016, Texas Instruments Incorporated
Revision History
23
STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES
1.
Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or
documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein.
Acceptance of the EVM is expressly subject to the following terms and conditions.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2
Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms and conditions do not apply to Software. The warranty, if any, for Software is covered in the applicable Software
License Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for any defects that are caused by neglect, misuse or mistreatment
by an entity other than TI, including improper installation or testing, or for any EVMs that have been altered or modified in any
way by an entity other than TI. Moreover, TI shall not be liable for any defects that result from User's design, specifications or
instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as
mandated by government requirements. TI does not test all parameters of each EVM.
2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM,
or credit User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the
warranty period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to
repair or replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall
be warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
3
Regulatory Notices:
3.1 United States
3.1.1
Notice applicable to EVMs not FCC-Approved:
This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit
to determine whether to incorporate such items in a finished product and software developers to write software applications for
use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless
all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause
harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is
designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of
an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2
For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
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FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1
For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1
Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2
Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified
by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of
Japan to follow the instructions below with respect to EVMs:
1.
2.
3.
Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.
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【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて
いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの
措置を取っていただく必要がありますのでご注意ください。
1.
2.
3.
電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
実験局の免許を取得後ご使用いただく。
技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ
ンスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
3.3.3
Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ
い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
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4
EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1
User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2
EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5.
Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.
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6.
Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE
DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY
THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND
CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY
OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD
PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY
INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF
THE EVM.
7.
USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION
SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY
OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.
8.
Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED
TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS,
LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL
BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION
ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM
PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER
THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE
OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND
CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9.
Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2015, Texas Instruments Incorporated
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IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
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Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
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