User's Guide
SBAU217A – March 2014 – Revised March 2014
ADS7851EVM-PDK
ADS7851EVM-PDK
This user's guide describes the characteristics, operation and use of the ADS7851EVM performance
demonstration kit (PDK). This kit is an evaluation platform for the ADS7851, dual-channel, 14-bit,
simultaneous sampling, successive approximation register (SAR) analog-to-digital converter (ADC) that
supports fully-differential analog inputs. This EVM eases the evaluation of the ADS7851 device with
hardware and software for computer connectivity through a universal serial bus (USB). This user's guide
includes complete circuit descriptions, schematic diagram, and bill of materials.
Throughout this document, the terms demonstration kit, evaluation board, evaluation module are
synonymous with the ADS7851EVM-PDK.
The following related documents are available through the Texas Instruments web site at
http://www.ti.com.
Related Documentation
Device
Literature Number
ADS7851
SBAS587
OPA376
SBOS432
THS4521
SBOSF458
TPS3836E18
SLVS292
TPS7A4700
SBVS204
REG71055
SBAS221
Windows XP, Windows 7, Windows 8, Excel are registered trademarks of Microsoft Corporation.
SPI is a trademark of Motorola Inc.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
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7
Contents
Overview ...................................................................................................................... 3
EVM Analog Interface ....................................................................................................... 3
Digital Interface .............................................................................................................. 7
Power Supplies .............................................................................................................. 8
ADS7851EVM-PDK Initial Setup .......................................................................................... 9
ADS7851EVM-PDK Kit Operation ....................................................................................... 15
Bill of Materials, PCB Layout, and Schematics......................................................................... 24
List of Figures
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.................................................................... 4
THS4521 Fully-Differential Amplifier Driver .............................................................................. 5
REFOUT_A and REFOUT_B Reference Connections ................................................................ 6
ADS7851EVM Default Jumper Settings .................................................................................. 9
Bottom View of SDCC Board with microSD Memory Card Installed ............................................... 10
Connecting ADS7851EVM Board to SDCC Controller Board ........................................................ 11
LED Indicators on the SDCC Board ..................................................................................... 11
Welcome Screen and Destination Directory Screens ................................................................. 12
License Agreement and Start Installation Screens .................................................................... 12
Progress Bar and Installation Complete Screens ...................................................................... 13
Windows 7 Driver Installation Warning .................................................................................. 13
SDCC Device Driver Installation ......................................................................................... 14
SDCC Device Driver Completion ......................................................................................... 14
GUI Display Prompt ........................................................................................................ 15
Open the ADS7851EVM Settings Page ................................................................................. 16
ADS7851EVM Settings Page ............................................................................................. 16
ADS7851EVM Analog Inputs description on the GUI ................................................................. 17
Open the Data Monitor page on the GUI................................................................................ 17
Data Monitor Page ......................................................................................................... 18
Saving Data to a Text File ................................................................................................ 19
FFT Performance Analysis Page ......................................................................................... 20
Histogram Analysis Page.................................................................................................. 22
Open the GUI Settings page .............................................................................................. 23
Set Capture Mode to SDCC Interface While Using the EVM Hardware ............................................ 23
ADS7851EVM PCB: Top Layer .......................................................................................... 26
ADS7851EVM PCB: Ground Layer ...................................................................................... 26
ADS7851EVM PCB: Power Layer ....................................................................................... 27
ADS7851EVM PCB: Bottom Layer ...................................................................................... 27
ADS7851EVM Analog Interface Input Connections
List of Tables
2
1
JP1 to JP4: Analog Interface Connections ............................................................................... 4
2
SMA Analog Interface Connections ....................................................................................... 4
3
Connector J6 Pinout ......................................................................................................... 7
4
Power-Supply Jumpers
5
Default Jumper Configuration .............................................................................................. 9
6
ADS7851EVM Bill of Materials
.....................................................................................................
..........................................................................................
ADS7851EVM-PDK
8
24
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Overview
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1
Overview
The ADS7851EVM-PDK is a platform for evaluation of the ADS7851 analog-to-digital converter (ADC).
The evaluation kit combines the ADS7851EVM board with a serial data capture card (SDCC) controller
board. The SDCC controller board consists of a TI Sitara embedded microcontroller (AM3352) and a field
programmable gate array (FPGA). The SDCC controller board provides an interface from the EVM to the
computer through a universal serial bus (USB) port. The included software communicates with the SDCC
controller board platform, and the SDCC board provides the power and digital signals used to
communicate with the ADS7851EVM board. These demonstration kits include the ADS7851EVM board,
the SDCC controller board, a microSD memory card, and an A-to-micro-B USB cable.
1.1
ADS7851EVM Features
•
•
•
•
Contains support circuitry as a design example to match ADC performance
3.3-V slave serial peripheral interface (SPI™)
Onboard 5-V analog supply
Onboard THS4521 (200-MHz bandwidth, 1-mA quiescent current) ADC input drivers
ADS7851EVM-PDK Features
• USB port for computer interfacing
• Easy-to-use evaluation software for Windows XP®, Windows 7®, Windows 8® operating systems
• Data collection to text files
• Built-in analysis tools including scope, FFT, and histogram displays
• Complete control of board settings
2
EVM Analog Interface
The ADS7851 is a dual-channel, simultaneous-sampling ADC that supports fully-differential analog inputs.
Each channel of the ADS7851 uses a THS4521 fully-differential amplifier to drive the differential inputs of
the ADC. The ADS7851EVM is designed for easy interfacing to multiple analog sources. SMA connectors
allow the EVM to have input signals connected through coaxial cables. In addition, header connectors JP1
through JP4 provide a convenient way to connect input signals. All analog inputs are buffered by
THS4521 high-speed, fully differential amplifier in order to properly drive the ADS7851 ADC inputs.
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A0(+)
THS4521
SMA J2 (IN+)
ADS7851
Fully Differential Amplifier
5V
AINM-A (Pin 16)
Header JP2.2
±
A0(±)
SMA J1 (IN±)
+
+
±
AINP-A (Pin 15)
Header JP1.2
SMA J4 (IN+)
A1(+)
THS4521
Fully Differential Amplifier
5V
AINM-B (Pin 5)
Header JP4.2
±
A1(±)
SMA J3 (IN±)
+
+
±
AINP-B (Pin 6)
Header JP3.2
Figure 1. ADS7851EVM Analog Interface Input Connections
Table 1 summarizes the JP1 through JP4 analog interface connectors.
Table 1. JP1 to JP4: Analog Interface Connections
Terminal Number
Signal
Description
JP1.2
A0(–)
CHA negative differential input. This terminal can be grounded
for single-ended signals.
JP2.2
A0(+)
CHA positive differential input or input for single-ended signals.
JP3.2
A1(–)
CHB negative differential input. This terminal can be grounded
for single-ended signals.
JP4.2
A1(+)
CHB positive differential input or input for single-ended signals.
Table 2 lists the SMA analog inputs.
Table 2. SMA Analog Interface Connections
Terminal Number
4
Signal
Description
J1
A0(–)
CHA negative differential input. This SMA connector can be
grounded by shunting JP1 terminal 1 and JP1 terminal 2 for
single-ended signals.
J2
A0(+)
CHA positive differential input or input for single-ended signals.
J3
A1(–)
CHB negative differential input. This SMA connector can be
grounded by shunting JP3 terminal 1 and JP3 terminal 2 for
single-ended signals.
J4
A1(+)
CHB positive differential input or input for single-ended signals.
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2.1
Analog Input Range
The ADS7851 dual simultaneous ADC supports fully-differential analog input signals on both channels.
Each input terminal swings between 0 V to twice the reference voltage. Thus, AINP_A and AINM_B can
individually swing between 0 V and 2 × Vref_A, whereas AINP_B and AINM_B can individually swing
between 0 V and 2 × Vref_B. Therefore, the analog input full-scale range (FSR) for each ADC is four times
the reference voltage (±2 × Vref).
The ADS7851EVM incorporates two THS4521 fully-differential amplifiers to drive the ADC inputs. The
fully-differential amplifiers shift the signal to the appropriate common-mode voltage level. Figure 2 shows
an shows an example where a differential input signal with a common-mode voltage of 0 V is applied to
the inputs of the THS4521. The THS4521 shifts the signal to the required common-mode voltage of FSR /
2. Because the THS4521 is powered by a 5-V supply , the input signals must be limited to a differential
voltage from –4.3 V to 4.3 V to avoid saturating the amplifier output.
4.65 V
2.5 V
1 k
10
+2.15 V
A0(Å)
1 k
AINP
0V
Å
-2.15 V
Vocm = +FSR_ADC / 2 = 2.5 V
+2.15 V
A0(+)
0.35 V
5V
10
+
+
0V
Å
Å4.3 V
10
0V
Å2.15 V
+4.3 V
820 pF
THS4521
10
1 k
AINN
4.65 V
1 k
2.5 V
0.35 V
FSR_ADC = ±2 × VREF = ±5 V
Figure 2. THS4521 Fully-Differential Amplifier Driver
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ADS7851 Device Internal Reference
The ADS7851 device incorporates two internal individual 2.5-V reference sources. The devices feature
two identical reference sources that generate voltages Vref_A and Vref_B on terminals REFOUT_A and
REFOUT_B, respectively. ADC_A operates with reference voltage Vref_A and ADC_B operates with
reference votlage Vref_B. As shown in Figure 3. The REFOUT_A and REFOUT_B terminals are decoupled
with individual 10-μF capacitors.
AINP_A
AINM_A
Vref_A
ADC_A
REFOUT_A
Serial
Interface
10 PF
REFGND_A
AINP_B
AINM_B
Vref_B
ADC_B
REFOUT_B
10 PF
REFGND_B
Figure 3. REFOUT_A and REFOUT_B Reference Connections
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3
Digital Interface
Socket strip connector J6 provides the digital I/O connections between the ADS7851EVM board and the
SDCC board.
Section 3 summarizes the pinout for connector J6.
Table 3. Connector J6 Pinout
3.1
Terminal Number
Signal
J6.2, J6.10, J6.15, J6.16,
J6.18
GND
J6.4
EVM PRESENT
2
J6.11, J6.12
I C™ bus
J6.13
DVDD
J6.34
CS
J6.36
SCLK
Description
Ground connections
EVM present, active low
I2C bus; used only used to program the U7
EEPROM on the EVM board
3.3-V digital supply from SDCC controller board
Chip select, active low
Serial interface clock
J6.38
SDI
J6.40
SDO_A
Serial data input
Serial data output for channel A
J6.42
SDO_B
Serial data output for channel B
Serial Peripheral Interface (SPI)
The ADS7851 digital output is available in SPI-compatible format, which makes interfacing with
microprocessors, digital signal processors (DSPs), and FPGAs easy. The ADS7851EVM offers 47-Ω
resistors between the SPI signals and connector J6 to aid with signal integrity. Typically, in high-speed
SPI communication, fast signal edges can cause overshoot; these 47-Ω resistors slow down the signal
edges in order to minimize signal overshoot.
3.2
I2C Bus for Onboard EEPROM
The ADS7851EVM has an I2C bus to communicate with the onboard EEPROM that records the board
name and assembly date. It is not used in any form by the ADS7851 converter.
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Power Supplies
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Power Supplies
The analog portion of the ADS7851EVM-PDK requires a 5-V supply. The ADS7851EVM-PDK is
configured at the factory using the onboard regulated analog 5-V supply (+VA); and an onboard 3.3-V
digital supply. Alternatively, set the AVDD analog supply voltage by connecting an external power source
through two-terminal connector J5. Table 4 lists the configuration details for P3.
Table 4. Power-Supply Jumpers
Terminal Number
Position
Shunt 2-3 (default)
JP10
JP9
Shunt 1-2
N/A
Function
Onboard 5-V AVDD analog supply selected
External 5-V AVDD connected through two-terminal
block J5
JP9 not installed
CAUTION
The external AVDD supply applied to external two-terminal connector J5 must
not exceed 5.5 V or device damage may occur. The external AVDD supply
must be in the range of 5.0 V to 5.5 V for proper ADS7851EVM operation.
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5
ADS7851EVM-PDK Initial Setup
This section presents the steps required to set up the ADS7851EVM-PDK kit before operation.
5.1
Default Jumper Settings
A silkscreen plot detailing the default jumper settings is shown in Figure 4. Table 5 explains the
configuration for these jumpers.
Figure 4. ADS7851EVM Default Jumper Settings
Table 5. Default Jumper Configuration
Terminal Number
Default Position
JP1
Open
JP1.2 header connector to A0(-)
Switch Description
JP2
Open
JP2.2 header connector to A0(+)
JP3
Open
JP3.2 header connector to A1(-)
JP4
Open
JP4.2 header connector to A1(+)
JP5
N/A
JP5 is not installed on printed circuit board (PCB)
JP6
N/A
JP6 is not installed on PCB
JP7
Open
ADS7851 REFOUT_A internal reference source output
JP8
Open
ADS7851 REFOUT_B internal reference source output
JP9
N/A
JP10
Short 2-3 or short 1-2
JP9 is not Installed on PCB
Short 2-3 selects onboard regulated AVDD supply; short 1-2 selects
external AVDD through J5
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Software Installation
This section presents the steps required to the install the software. Section 6 explains how to operate the
software to acquire data.
NOTE: Ensure the microSD memory card included in the kit is installed in the microSD socket (P6)
on the back of the SDCC board before connecting the EVM to the PC. Otherwise, as a result
of improper boot up, Windows cannot recognize the ADS7851EVM-PDK as a connected
device.
Complete the following steps to install the software:
Step 1. Install the microSD memory card on the SDCC controller board.
Step 2. Verify jumpers are in the factory-default position and connect the hardware.
Step 3. Install the ADS7851EVM-PDK software.
Step 4. Complete the SDCC device driver installation.
Each task is described in the following subsections.
5.2.1
Install the microSD Memory Card on the SDCC Controller Board
The ADS7851EVM-PDK includes a microSD memory card that contains the EVM software and SDCC
controller board firmware required for the EVM operation.
NOTE: Ensure the microSD memory card that contains the software is installed in the microSD
socket (P6) on the back of the SDCC board.
Figure 5 shows the bottom view of the SDCC controller board with the microSD card
installed.
Figure 5. Bottom View of SDCC Board with microSD Memory Card Installed
The microSD memory card is formatted at the factory with the necessary firmware files for the SDCC
controller board to boot properly. In addition to the SDCC firmware files (app and MLO files), the microSD
memory card contains the ADS7851EVM-PDK software installation files inside the ADS7851 EVM V#.#.#
folder. refers to the installation software version number, and increments with software installer
releases.
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5.2.2
Verify Jumpers are in the Factory-Default Position and Connect the Hardware
The ADS7851EVM-PDK includes both the ADS7851EVM and the SDCC controller board; however, the
devices are shipped unconnected. Follow these steps to verify that ADS7851EVM-PDK kit is configured
and connected properly.
Step 1. Verify the microSD card is installed on the back of the SDCC board, as shown in Figure 5.
Step 2. Verify the ADS7851EVM jumpers are configured as shown inFigure 4.
Step 3. Connect the ADS7851EVM board to the SDCC controller board as Figure 6 illustrates.
Figure 6. Connecting ADS7851EVM Board to SDCC Controller Board
Step 4.
Step 5.
Connect the SDCC controller board to the PC through the micro USB cable.
Verify that the LED D5 Power Good indicator is illuminated. Wait approximately ten seconds
and verify that diode D2 blinks, indicating that USB communication with the host PC is
functioning properly. Figure 7 shows the location of the LED indicators in the SDCC controller
board.
Figure 7. LED Indicators on the SDCC Board
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Install the ADS7851EVM-PDK Software
The ADS7851 EVM V#.#.# software must be installed on the PC. This software supports the
ADS7851EVM-PDK. The user must have administrator privileges to install the EVM software. The
following steps list the directions to install the software.
1. Open Windows explorer and find the microSD memory card in the browser as a storage device.
2. Navigate to the ...\ADS7851 EVM Vx.x.x\Volume\ folder.
3. Run the installer by double-clicking the file setup.exe. This action installs the EVM GUI software and
the required and SDCC device driver components.
4. After the installer begins, a welcome screen displays. Click Next to continue.
5. A prompt appears with the destination directory; select the default directory under: ...\Program
Files(x86)\Texas Instruments\ADS7851evm\.
Figure 8. Welcome Screen and Destination Directory Screens
6. One or more software license agreements appear. Select I Accept the License Agreement and click
Next.
7. The Start Installation screen appears. Click Next.
Figure 9. License Agreement and Start Installation Screens
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8. A progress bar appears; this step takes a few minutes.
9. The progress bar is followed by an installation complete notice.
Figure 10. Progress Bar and Installation Complete Screens
5.2.4
Complete the SDCC Device Driver Installation
During installation of the SDCC device driver, a prompt may appear with the Windows security message
shown in Figure 11. Select Install this driver software anyway to install the driver required for proper
operation of the software. The drivers contained within the installers are safe for installation to your
system.
Figure 11. Windows 7 Driver Installation Warning
NOTE: Driver installation prompts do not appear if the SDCC device driver has been installed on
your system previously.
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The following steps describe how to install the SDCC device driver.
Step 1. Immediately after the ADS7851 EVM software installation is complete, prompts appear to
install the SDCC device driver, as shown in Figure 12 and Figure 13
Step 2. A computer restart may be required to finish the software installation. If prompted, restart the
PC to complete the installation.
Figure 12. SDCC Device Driver Installation
Figure 13. SDCC Device Driver Completion
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6
ADS7851EVM-PDK Kit Operation
This section describes how to use ADS7851EVM-PDK and the ADS7851EVM software to configure the
EVM and acquire data.
6.1
About the SDCC Controller Board
The SDCC controller board provides the USB interface between the PC and the ADS7851EVM. The
controller board is designed around the AM335x processor, a USB 2.0 high-speed capability, 32-bit ARM
core. The SDCC controller board incorporates an onboard FPGA subsystem and 256MB of onboard DDR
SRAM memory.
The SDCC controller board is not sold as a development board, and it is not available separately. TI
cannot offer support for the SDCC controller` board except as part of this EVM kit.
6.2
Loading the ADS7851EVM-PDK Software
The ADS7851 EVM software (this software also supports the ADS7851EVM-PDK) provides control over
the settings of the ADS7851. Adjust the ADS7851EVM settings when the EVM is not acquiring data.
During acquisition, all controls are disabled and settings cannot be changed.
Settings on the ADS7851EVM correspond to settings described in the ADS7851 product data sheet
(available for download at http://www.ti.com); see the product data sheet for details.
To load the ADS7851 EVM software, follow these steps:
Step 1. Make sure the EVM kit is configured and powered up as explained in Section 5.
Step 2. Start the ADS7851 EVM software. Go to Start → All Programs →Texas Instruments →
ADS7851 EVM and click ADS7851 EVM to run the software.
Step 3. Verify that the software detects the ADS7851EVM. The GUI identifies the EVM hardware that
is connected to the controller board and displays Loading the ADS7851evm Settings. After
the settings are loaded, ADS7851EVM GUI displays at the top of the GUI screen, as shown
in Figure 14.
Figure 14. GUI Display Prompt
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ADS7851EVM Settings
Configure the ADS7851EVM for evaluation. The ADS7851EVM Settings page explains in detail the analog
input connections available on the evaluation board. In order to configure the EVM analog input
connections, follow these steps:
1. Load the ADS7851EVM Settings page in the GUI. Hover the cursor over the red arrow at the leftcenter side of the GUI screen; a menu with different GUI pages appears. Click on ADS7851 EVM
Settings, as shown in Figure 15.
Figure 15. Open the ADS7851EVM Settings Page
2. The ADS7851 device incorporates two internal individual 2.5-V reference sources. The reference
sources generate voltages Vref_A and Vref_B on terminals REFOUT_A and REFOUT_B, respectively. The
reference output voltages Vref_A and Vref_B are available on jumpers JP7 and JP8. Figure 16 shows the
ADS7851EVM Settings page of the GUI.
Figure 16. ADS7851EVM Settings Page
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3. Scroll down in the ADS7851EVM Settings page and find the ADS7851 Analog Inputs connections
description on the GUI. Figure 17 shows the input connections description on the ADS7851EVM
Settings page of the GUI. The channel A differential input signal can be applied into the J1(-) and
J2(+) SMA connectors or to the JP1.2(-) and JP2.2(+) header connectors. The channel B differential
input signal can be applied into the J3(-) and J4(+) SMA connectors or to the JP3.2(-) and JP4.2(+)
header connectors.
Figure 17. ADS7851EVM Analog Inputs description on the GUI
6.4
Capturing Data with the ADS7851EVM-PDK
Access the Data Monitor page in the GUI to monitor data acquired by the ADS7851. This GUI page
displays the acquired data versus time. To access the Data Monitor page, hover the cursor over the red
arrow at the left center side of the GUI screen; a menu with different GUI pages appear. Click on the Data
Monitor option in the menu, as shown in Figure 18
Figure 18. Open the Data Monitor page on the GUI
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Figure 19 shows the Data Monitor page of the EVM GUI. Configure the device sampling rate and capture
settings by using the Capture Settings portion of the Data Monitor page. The change in configuration
settings are executed immediately after pressing the Configure Device button. The following list describes
the different options available on the Data Monitor page.
# of Samples— This option is used to select the number of samples captured in a block.
The number of samples captured in a block are contiguous. The drop-down menu is used to select
a data block in the range of 1024 samples to 1,048,576 samples per channel. This control provides
a drop-down list for values restricted to 2n, where n is an integer.
SCLK— This control sets the clock frequency used by the SPI interface to capture data.
By configuring the SCLK frequency, the data rate of the ADS7851 is configured. The
ADS8351EVM-PDK software supports SCLK frequencies of 27 MHz, 24 MHz, 20 MHz, and 16.2
MHz. These SCLK frequencies correspond to data rates of 1.5 MSPS, 1.333 MSPS, and 1.111
MSPS, and 900 kSPS respectively.
Device Status— This panel shows the current clock frequency and data rate of the ADS7851.
Figure 19. Data Monitor Page
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6.4.1
Data Collection to Text Files
The Data Monitor page of the GUI allows data to be saved in a tab-delimited text file format that can be
imported into Excel®, or other spreadsheet software tools. The text file contains the raw ADC data of both
channel A and channel B in decimal data format. Information such as the device name, date and time, the
sampling frequency, and number of samples of the data record are also stored. In order to save any data
captured by the EVM, click on the Save Data button and specify the file path and file name of the data file,
as shown in Figure 20.
Figure 20. Saving Data to a Text File
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FFT Analysis
The Performance Analysis page in the GUI performs the fast fourier transform (FFT) of the captured data,
and displays the resulting frequency domain plots of channel A and channel B of the ADS7851. This page
also calculates key ADC dynamic performance parameters, such as signal-to-noise ratio (SNR), total
harmonic distortion (THD), signal-to-noise and distortion ratio (SINAD), and spurious-free dynamic range
(SFDR). Figure 21 shows the FFT performance analysis display. The FFT calculated parameters are
shown on the right side of the display.
Figure 21. FFT Performance Analysis Page
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ADS7851EVM-PDK Kit Operation
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6.5.1
FFT Analysis Settings and Controls
Sample Rate (kHz)— This field indicates the sampling frequency of the ADC data (kHz).
Samples (#)— The FFT requires a time domain record with a number of samples that is a power of 2.
The Samples (#) drop-down menu provides a list of values that satisfy this requirement.
Fi Calculated— This field displays the frequency of the largest amplitude input signal computed from the
FFT data, typically the fundamental frequency.
Window— The window function is a mathematical function that reduces the signal to zero at the end
points of the data block.
In applications where coherent sampling cannot be achieved, a window-weighting function can be
applied to the data to minimize spectral leakage. The following opions are available:
• None (no window weighting function applied; use for coherent data)
• Hanning
• Hamming
• Blackman-Harris
• Exact Blackman
• Blackman
• Flat Top
• 4-Term Blackman-Harris
• 7-Term Blackman-Harris
• Low Sidelobe
For a more thorough discussion of windowing, refer to IEEE1241-2000.
Harmonics— This field sets the number of harmonics that are included in the FFT performance
calculations.
Leakage Bins— These fields provide for the removal of the unwanted frequency bins that may be the
result of noncoherent data sampling.
Set the Fundamental Leakage Bins and Harmonic Leakage Bins fields to the number of adjacent
bins on either side of the fundamental or harmonic frequencies to include the main frequency
power. The DC Leakage Bins field allows the number of frequency bins that are a result of the dc
portion of the measurement to be excluded from the calculations.
SBAU217A – March 2014 – Revised March 2014
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21
ADS7851EVM-PDK Kit Operation
6.6
www.ti.com
Histogram Analysis
Histogram testing is commonly used when characterizing ADCs. A histogram is merely a count of the
number of times a code has occurred in a particular data set. The Histogram Analysis page of the GUI
creates a histogram of the data of the acquired data set and displays it. Figure 22 shows the Histogram
Analysis page of the GUI.
Figure 22. Histogram Analysis Page
The DC Analysis table shown in Figure 22 displays several parameters of the captured data set:
• The StDev column displays the standard deviation of the data set. This value is equivalent to the RMS
noise of the signal when analyzing a dc data set.
• The Codes(pp) column shows the peak-to-peak spread of the codes in the data set; for a dc data set,
this range would be the peak-to-peak noise.
• The Mean column displays the average value of the data set.
• The ENOB(StDev) column displays the effective number of bits of the converter, as calculated from the
standard deviation or RMS noise.
• The Noise Free Bits column displays the effective bits of the converter when calculated using the peakto-peak noise.
6.7
Troubleshooting
If the ADS7851EVM software stops responding while the ADS7851EVM-PDK is connected, unplug the
USB cable from the EVM, unload the ADS7851EVM-PDK software, reconnect the ADS7851EVM-PDK to
the PC, and reload the ADS7851EVM software.
When initially setting up the ADS7851 GUI, the software detects the EVM hardware, and loads the
appropriate hardware settings. If the EVM hardware is not detected, the GUI defaults to the Capture
Mode: Software Debug mode of operation using a preloaded captured data file for demonstration
purposes.
22
ADS7851EVM-PDK
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ADS7851EVM-PDK Kit Operation
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While using the EVM-PDK hardware for data acquisition, keep the GUI in the Capture Mode: SDCC
interface mode of operation. The GUI indicates the selected mode of operation on the top-right corner of
the GUI display. In order to select the SDCC interface mode of operation, navigate to the GUI Settings
page and select the SDCC Interface option on the Capture Mode drop-down menu, as shown in Figure 23
and Figure 24.
Figure 23. Open the GUI Settings page
Figure 24. Set Capture Mode to SDCC Interface While Using the EVM Hardware
SBAU217A – March 2014 – Revised March 2014
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ADS7851EVM-PDK
Copyright © 2014, Texas Instruments Incorporated
23
Bill of Materials, PCB Layout, and Schematics
7
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Bill of Materials, PCB Layout, and Schematics
Table 6 lists the bill of materials. Section 7.2 shows the PCB layout for the ADS7851EVM. The schematics
for the ADS7851EVM are appended to the end of this user's guide.
7.1
Bill of Materials
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.
Table 6. ADS7851EVM Bill of Materials
Item No.
Qty
Description
1
11
2
0
C5, C6, C7, C8, C9,
Not Install: Capacitor, Ceramic, 1uF,
C11, C15, C26,
6.3V, +/-10%, X7R, 0603
C31, C33
3
3
4
7
5
5
C17, C18, C35,
C36, C40
6
2
C22, C38
CAP, CERM, 820pF, 50V, +/-5%,
C0G/NP0, 0805
C47, C50
Capacitor, Ceramic, 2.2uF, 16V, +/-10%,
X5R, 0603
2
7
C14, C23, C51
Capacitor, Ceramic, 10uF, 6.3V, +/-20%,
X5R, 0603
C16, C19, C34,
Capacitor, Ceramic, 0.1uF, 16V, +/-5%,
C37, C48, C52, C53 X7R, 0603
CAP, CERM, 1uF, 6.3V, +/-10%, X7R,
0603
Vendor
Part Number
Murata
GRM21BR61C106KE15L
N/A
Not Install
TDK
C1608X5R0J106M
AVX
0603YC104JAT2A
MuRata
GRM188R70J105KA01D
AVX
08055A821JAT2A
Murata
GRM188R61C225KE15D
8
1
C49
Capacitor, Ceramic, 0.22uF, 16V, +/10%, X5R, 0603
TDK
GRM188R61C224KA88D
9
1
D1
DIODE ZENER 5.9V 250MW SOT23
NXP
Semiconductors
PLVA659A.215
10
4
J1, J2, J3, J4
Connector, TH, SMA
TE Connectivity
142-0701-201
On Shore
Technology Inc
ED555/2DS
11
1
J5
2 Terminal Block 3.5MM 2POS PCB)
12
1
J6
SAMTEC, dual-row, right-angle, female,
latching
Samtec
ERF8-025-01-L-D-RA-L-TR
13
0
J7
Not Install: Connector for microSD card
Molex
Not Install (MOLEX 502570-0893)
14
6
JP1, JP2, JP3, JP4,
JP7, JP8
Header, TH, 100mil, 2x1, Gold plated,
230 mil above insulator
Samtec
TSW-102-07-G-S
15
0
JP5, JP6, JP9
Not Install: Header, TH, 100mil, 2x1,
Gold plated, 230 mil above insulator,
Samtec, Inc.
Not Install
16
1
JP10
Header, TH, 100mil, 3x1, Gold plated,
230 mil above insulator)
Samtec
TSW-103-07-G-S
16
8
Yageo
RC0603FR-0747RL
Yageo America
RC0603FR-0747RL
R1, R2, R3, R10,
Resistor, 47.0 ohm, 1%, 0.1W, 0603
R13, R31, R33, R47
R1, R2, R3, R10,
R13, R31
17
2
19
4
20
3
R14, R49,
21
8
'R15, R18, R19,
R20, R50, R53,
R54, R55
RES 1K OHM 1/10W .1% 0603 SMD
22
8
R16, R17, R24,
R51, R52, R62,
R89, R90
RES, 0 ohm, 5%, 0.1W, 0603
23
4
2
R5, R86
RES, 47.0 ohm, 1%, 0.1W, 0603
18
24
24
Ref Des
C1, C10, C32, C39,
Capacitor, Ceramic, 10uF, 16V, +/-10%,
C41, C42, C43,
X5R, 0805
C44, C45, C46, C54
Resistor, 100k ohm, 5%, 0.1W, 0603
R11, R12, R45, R48 RES, 20.0k ohm, 1%, 0.1W, 0603
RES, 100 ohm, 1%, 0.1W, 0603
R21, R22, R56, R57 RES, 10.0 ohm, 1%, 0.1W, 06033
R46, R63
RES, 0.22 ohm, 1%, 0.1W, 0603
ADS7851EVM-PDK
Vishay Dale
CRCW0603100KJNEA
Vishay Dale
CRCW060320K0FKEA
Yageo
RC0603FR-07100RL
Panasonic
Electronic
ERA-3AEB102V
Vishay Dale
CRCW060320K0FKEA
Vishay Dale
CRCW060310R0FKEA
Panasonic
Electronic
ERJ-3RQFR22V
SBAU217A – March 2014 – Revised March 2014
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Bill of Materials, PCB Layout, and Schematics
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Table 6. ADS7851EVM Bill of Materials (continued)
Item No.
Qty
Ref Des
25
6
'R70, R71, R72,
R73, R74, R75
Description
Vendor
Part Number
RES, 10k ohm, 5%, 0.063W, 0402
Vishay Dale
CRCW040210K0JNED
26
1
27
2
R76
RES, 10k ohm, 1%, 0.063W, 0402
Vishay Dale
CRCW060310K0FKEA
R80, R84
RES, 0 ohm, 5%, 0.125W, 08053
Vishay Dale
28
0
R83
CRCW08050000Z0EA
Not Install: Resistor 0805
N/A
29
0
R87, R88
N/A
Not Install: Resistor 0402
N/A
N/A
R6, R7, R8, R9,
R23, R28, R29,
R30, R33, R34,
Not Install: Resistor 0603
R35, R43, R44,
R47, R58, R60, R61
N/A
N/A
30
0
31
1
U1
IC, Dual, 1.5-MSPS, 14-Bit Simultaneous
Sampling, Fully-Diff ADC
Texas Instruments
ADS7851IRTE
32
2
U4, U11
IC, Low Power, Negative Rail Input, R-toR, Fully Diff Amp
Texas Instruments
THS4521IDGKT
33
0
U5
Not Install
Not Install: REF5025IDGK
34
2
U6, U12
IC, Low Noise, Low Quiescent Current,
Precision OPA
Texas Instruments
OPA376AIDBV
35
1
U7
IC, I2C Compatible (2-Wire) Serial
EEPROM
Texas Instruments
AT24C02C-XHM
36
1
U8
IC,36-V, 1-A, 4.17uVRMS RF LDO
Voltage Regulator
Texas Instruments
TPS7A4700RGW
37
1
U9
IC, 60mA, 5.5V, Buck/Boost Charge
Pump
Texas Instruments
38
0
U13
Not Install: IC, High-Speed, SingleSupply, Rail-to-Rail OPA
Texas Instruments
Not Install: OPA2350EA
39
1
U14
IC, NanoPower Supervisory Circuit
Texas Instruments
TPS3836E18DBVT
40
1
N/A
Conn Shunt, Pitch 0.100"; Height 0.240" ,
Gold Plated
Samtec
SNT-100-BK-G
41
1
TP0
TEST POINT PC MINI .040"D BLACK
Keystone
Electronics
5001
42
0
TP1, TP2, TP3,
TP4, TP5, TP6
Not Install: TEST POINT PC MINI .040"D
BLACK
Keystone
Electronics
Not Install: 5001
43
2
N/A
BUMPON CYLINDRICAL .375X.135 BLK
3M
SJ61A8
Not Install: IC, Low Noise, Low Drift,
Precision Voltage Reference
SBAU217A – March 2014 – Revised March 2014
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REG71055DDC
ADS7851EVM-PDK
Copyright © 2014, Texas Instruments Incorporated
25
Bill of Materials, PCB Layout, and Schematics
7.2
www.ti.com
PCB Layout
Figure 25 through Figure 28 show the PCB layouts for the ADS7851EVM.
NOTE: Board layouts are not to scale. These figures are intended to show how the board is laid out;
they are not intended to be used for manufacturing ADS7851EVM PCBs.
Figure 25. ADS7851EVM PCB: Top Layer
Figure 26. ADS7851EVM PCB: Ground Layer
26
ADS7851EVM-PDK
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Bill of Materials, PCB Layout, and Schematics
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Figure 27. ADS7851EVM PCB: Power Layer
Figure 28. ADS7851EVM PCB: Bottom Layer
7.3
Schematics
The schematics for the ADS7851EVM are appended to the end of this user's guide.
SBAU217A – March 2014 – Revised March 2014
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27
Revision History
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Revision History
Changes from Original (March 2014) to A Revision ....................................................................................................... Page
•
•
•
Changed Figure 8 caption .............................................................................................................. 12
Changed Figure 9 caption .............................................................................................................. 12
Changed Figure 17 to show updated screen shot................................................................................... 17
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
28
Revision History
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Copyright © 2014, Texas Instruments Incorporated
1
2
142-0701-201
COJ1
J1
COR19
R19
1
PIJ101
PIR1901
A0(-)
COR28
R28
NI
2
3
4
5
PIR1501
PIR2101
PIJ102 PIJP10
4
5
6
PIR2102
10.0
AVDD
COC19
C19
AVDD
PIR2801
A
COR21
R21
PIR1502
1.00k
A0(-)
2
1
PIJ102 PIJ103 PIJ104 PIJ105
COR15
R15
PIR1902
1.00k
PIR2802
3
PIC1902
PIC1901
A
0.1µF
COJP1
JP1
COC16
C16
PIR1202
PIJP502 PIJP501
PIU602
PIR1401
OPA376DBV
PIC1801
PIC1802
1
PIU401
COC18
C18
1µF
Vs-
COR17
R17
-
PIR1701
PIR16020
PIC2 01
PIC2 02
PIR17020
Vout+
PIU406
PIR1801
1.00k
COR22
R22
PIR1802
PIR2201
1.00k
A0(+)
PIR2202
COR62
R62
2
1
PIR3301
AVDD
PIR702
NI: 1.00k
PIR601
PIC601
PIC701
NI: 1µF
PIC702
COC7
C7
NI: 10µF
3
+
PIC901
COC9
C9
PIC902 NI: 1µF
PIU1303
GND
PIU1304
COJP7
JP7
PIR1 02
NLREF0A02
REF-A/2
PIR1 01
GND
R47
COR47
PIR4701
PIR3501
COTP7
TP7
COC11
C11
PIC1102
PIR4702
NI
PIC1101
PIR4602
COR46
R46
0.22
COR44
R44
PIR4402
NI: 1.00k PIC3 01
C
-
PIC3 02
PIU1305 +
PIR5401
PIR5402
13
14
15
17
COR1
R1PIR101
PIR102
9
CS PIU109
COR2
R2PIR201
PIR202
COR3
R3PIR302
47.0
PIR301
R24
COR24
0
PIR2401
PIC1401
PIC1402
NI: OPA2350EA
COR8
R8
PIR802
POSDO0A
SDO_A
COTP2
TP2
PITP201
SCLK
COTP1 POSCLK
TP1
47.0
PITP101
47.0
COTP3
TP3
PITP401
COTP4
TP4
PO\C\S
CS
POSDI
SDI
PIR502
COR5
R5
100k
C
PIR501
PITP0 1
COC14
C14
10µF
COTP0
TP0
PIR801
GND
GND
PIC3702
PIC3701
PIC3401
7
PIU1 07 PIU1 03 COU11
U11
1
PIU1201
PIU120
2
GND
COR49
R49
PIR4901
OPA376DBV
2
1
V-
1µF
GND
THS4521DGK
3
8
PIU1108 + /PD
U12
COU12
100
Vs+
2
PIU1102Vocm
PIR4902
PIC3601
COC36
C36
PIC3602 1µF
1
PIU1101
Vs-
-
PIU1 06
Vout-
COR51
R51
5
PIR5101
4
PIR5201
PIU1105
PIU1104
COR52
R52
0
PIR5102
PIC3801
PIC3802
0
PIR5202
Vout+
COC38
C38
820pF
6
V+
PIU1205
5
+
PIU1204 -
COC35
C35
GND
0.1µF
4
PIC3502
PIJP602 PIJP601
GND
PIR5602
10.0
AVDD
AVDD
COC34
C34
PIC3402
COJP4
JP4
REF-B/2
PIR4801
PIR5601
AVDD
GND
3
PIU1203
PIC3501
PIR5002
0.1µF
GND
COR48
R48
20k
COR56
R56
1.00k
A1(+)
PIJ402 PIJP401
GND
D
PITP301
COC37
C37
GND
PIR4802
PIR5001
2
1
2
3
4
5
COR60
R60
NI
PIR60 1
NI
47.0
DVDD
PIR4601
COC33
C33
NI: 1µF
COR50
R50
1.00k
PIR60 2
COC31
C31
PIR1302
POSDO0B
SDO_B
NI
COR54
R54
PIJ402 PIJ403 PIJ40 PIJ405
PIC3102
COR13
R13
PIR1301
B
COTP5
TP5
PIR2402
A1(+)
1
PIJ401
PIC3101
PITP501
PIU107 PIU108
JP8
COJP8
GND
142-0701-201
COJ4
J4
PIU105 PIU106
7
5
PIR4302
4
PIU104
REFIO-B
U13B
COU13B
PIU1307
COR43
R43
PIR4301
PIJP802 PIJP801
2
1
NI: 0
6
PIU1306
COC32
C32
10µF
47.0
PIR1002
10
SCLK PIU1010
3
PIU103
REFGND-B
NI: 47.0
PIR4401
GND
PIC3201
PIC3202
COR10
R10
PIR1001
11
SDO-A PIU1011
PIR2301
PIR4501
COU1
U1
ADS7851
12
SDO-B PIU1012
2
COR45
R45
20.0k
COR35
R35
NI: 0
1
PIU101 REFIO-A
PIU102 REFGND-A
COR23
R23
NI
PIR4502
PIR3502
PITP701
PIR2302
NLREF0B02
REF-B/2
GND
GND
GND
PIC10 1
COC10
C10
PIC10 2 10µF
COR11
R11
20.0k
NI: OPA2350EA
GND
PAD
PIR701
GND
COR7
R7
PIR3402
NI: 0
PIU104 PIU103 PIU10 7
AVDD
PIR3401
NI: 0.22
COC6
C6
PIC602
COR34
R34
PIR5802
NI: 100
COR6
R6
PIU106 PIU105
SDI/GND
NI: REF5025IDGK
GND
PIR5801
PIR602
TRIM/NR PIU505
COR63
R63
0.22
PIR6301
DVDD
GND
COR58
R58
6
VOUT PIU506
TEMP
PIR6302
PIJP702 PIJP701
8
4
PIU504
1
PIU1301
7
3
PIU503
PIC502
-
16
8
COC5
C5
NI: 1µF
VIN
PIR902
NI: 0
COU13A
U13A
AINP-A
PIU1308
V-
PIC501
GNDPIU1302
2
7
NC PIU507
PIR901
AINM-A
8
DNC PIU508
4
2
PIU502
COR9
R9
NI: 0.1µF
PIC1501
ANIP-B
COC15
C15
PIC1502
ANIM-B
GND
6
GND
DNC
PIR6201
PIC2301
COC23
C23
PIC2302 10µF
PIR3302
NI: 47.0
COC8
C8 NI
PIC802 PIC801
V+
1
PIU501
0
COR33
R33
COJP2
JP2
GND
PIR620
10.0
PIJP20 PIJ201
COR29
R29
NI
5
PIR2902
GND
COR18
R18
PIR2002
PIR2901
B
NI
2
1
A0(+)
142-0701-201
COU5
U5
DO NOT INSTALL
AVDD
PIR2001
AVDD
DO NOT INSTALL
COC22
C22
820pF
GND
COR20
R20
1
PIJ201
2
3
4
5
COR16
R16
PIR1601
4
PIU404
GND
COJ2
J2
PIJ20 PIJ203 PIJ204 PIJ205
THS4521DGK
2
PIU402Vocm
PIR1402
100
GND
COJP5
JP5
COU4
U4
Vout+ /PD Vs+
5
PIU405
3
1
2
PIR1201
NI
COR14
R14
PIU601
4
PIU604
V-
COC26
C26
PIU407 PIU403
7
PIC1701
COC17
C17
PIC1702 1µF
COR12
R12
20k
8
PIU408
COU6
U6
6
3
PIU603
+
2
1
PIC2601
PIC2602
0.1µF
PIU605
5
GND
REF-A/2
GND
AVDD
GNDPIC1602 PIC1601
GND
V+
GND
GND
D
JP6
COJP6
COJ3
J3
R55
COR55
1
PIJ301
PIR6102
1.00k
R61
COR61
NI
GND
GND
1
PIR5301
PIR5302
1.00k
A1(-)
R57
COR57
PIR5701
PIR5702
10.0
PIJ302 PIJP301
PIR6101
142-0701-201
GND
R53
COR53
PIR5502
2
1
A1(-)
2
3
4
5
PIJ302 PIJ30 PIJ304 PIJ305
PIR5501
JP3
COJP3
GND
Texas Instruments and/or its licensors do not warrant the accuracy or completeness of this specification or any information contained therein. Texas Instruments and/or its licensors do not
warrant that this design will meet the specifications, will be suitable for your application or fit for any particular purpose, or will operate in an implementation. Texas Instruments and/or its
licensors do not warrant that the design is production worthy. You should completely validate and test your design implementation to confirm the system functionality for your application.
2
3
4
Number: ADS7851EVM Rev: A
SVN Rev: Not in version control
Drawn By: Luis Chioye
Engineer: Luis Chioye
5
Designed for: Public Release
Mod. Date: 11/8/2013
Project Title: ADS7851EVM
Sheet Title:
Assembly Variant: Variant name not interpreted Sheet: 1 of 1
File: Main_ADS7851EVM_RevA.SchDoc
Size: B
Contact: http://www.ti.com/support
6
http://www.ti.com
© Texas Instruments 2013
1
2
3
+5_SDCC
4
5
6
+3.3V SDCC Digital Supply
COJ6
J6
COC49
C49
VIN
VOUT
1
PIU901
COR84
R84
PIR8402
PIC4501
PIC4502
COC45
C45
10µF
PIC4601
PIC4602
PIC4701
PIC4702
COC46
C46
10µF
3
PIU903
COC47
C47
2.2µF
ENABLE
2
GND PIU902
PIC50 1
PIC50 2
PIR8401
PIC3901
0
PIC3902
COC50
C50
2.2µF
COU9
U9
REG71055DDC
16
PIU8016
IN
15
PIU8015
IN
COR83
+5V_SDCC PIR8302R83 PIR8301
NI
COC39
C39
GND
COC40
C40
1µF
GND
17
18
0P1V
7
GND PIU807
2
PIU1402
GND
3
PIU1403
MR
6P4V2
6P4V1
COC41
C41
10µF
COC42
C42
10µF
PIC4301
PIC4302
COC43
C43
10µF
PIC4 01
PIC4 02
PIR8602
100k
COR86
R86
COC44
C44
10µF
GND
GND
21
PAD PIU8021
4
5
5
VDD PIU1405
NLEVMSDCLK
EVMSDCLK
NLEVMSDDATA1
EVMSDDATA1
NLEVMSDDATA3
EVMSDDATA3
4
RESET PIU1404
PIR90 2
TPS3836DBV
B
PIC4201
PIC420
PIU80 PIU806 PIU805 PIU804
6
CT
8
1
PIU1401
3P2V
COU14
U14
9
PIU809
0P8V
1P6V
+5.5V Charge Pump
PIC4101
PIC4102
0P2V
10
PIU8010 0P4V
PIC4801 PIC4802
0.1µF
ID_SDA
DVDD
20
OUT PIU8020
3
SENSE PIU803
11
COC48
C48
TPS7A4700RGW
1
OUT PIU801
GND
NI
GND
14
PIU8014
NR
12
PIU8012
PIR8702
COU8
U8
13
PIU8013
EN
PIU8011
GND
GND
PIR8601
10µF
PIC40 1
PIC40 2
19
PIU802 PIU8019 PIU8018 PIU8017
NC
5
PIU905
COR87
R87
PIR8701
NC
A
51
GND PIJ6051
PIU906
2
CP-
0.22µF
NC
4
PIU904
PIR80 2
PIC4901
NC
PIC4902
COR80
R80
0
6
PIR80 1
CP+
NLDVDD
DVDD
5.2V
COR90
R90
0
GND
COR88
R88
Enable_Pow
PIR8801
PIR90 1
PIR8802
1
PIJP901
2
PIJP902
PIR8902
2
2 PIJ602
4
4 PIJ604
6
6 PIJ606
8
PIJ608
8
10
10 PIJ6010
12
12 PIJ6012
14
14 PIJ6014
16
16 PIJ6016
18
18 PIJ6018
20
20 PIJ6020
22
PIJ6022
22
24
24 PIJ6024
26
26 PIJ6026
28
28 PIJ6028
30
30 PIJ6030
32
32 PIJ6032
34
34 PIJ6034
36
PIJ6036
36
38
38 PIJ6038
40
40 PIJ6040
42
42 PIJ6042
44
44 PIJ6044
46
46 PIJ6046
48
48 PIJ6048
50
PIJ6050
50
GND
EVM_Present~
A
GND
NLID0SCL
ID_SCL
NL05V0SDCC
+5V_SDCC
COTP6
TP6
PI+5_SDCC
TP601
NLEnable0Pow
Enable_Pow
PO\C\S
CS
POSCLK
SCLK
POSDI
SDI
POSDO0A
SDO_A
POSDO0B
SDO_B
NLEVMSDCMD
EVMSDCMD
NLEVMSDDATA0
EVMSDDATA0
NLEVMSDDATA2
EVMSDDATA2
GND
COR89
R89
0
ERF8-025-01-L-D-RA-L-TR
B
PIR8901
COJP9 Not Install
JP9
NI
1
1
3
PIJ603
3
5
PIJ605
5
7
PIJ607
7
9
PIJ609 9
11
PIJ6011
11
13
PIJ6013
13
15
PIJ6015
15
17
PIJ6017
17
19
PIJ6019 19
21
PIJ6021
21
23
PIJ6023 23
25
PIJ6025
25
27
PIJ6027
27
29
PIJ6029
29
31
PIJ6031
31
33
PIJ6033 33
35
PIJ6035
35
37
PIJ6037 37
39
PIJ6039
39
41
PIJ6041
41
43
PIJ6043
43
45
PIJ6045
45
47
PIJ6047 47
49
PIJ6049
49
PIJ601
Regulated AVDD
GND
AVDD
3
PIJP1003
2
PIJP1002
GND
PIC101
PIC102
1
PIJP1001
COC1
C1
10µF
COJP10
JP10
External AVDD
GND
TERMBLOCK-2
COJ5
J5
1
PIJ501
2
PIJ502
3
PID103
COD1
D1
PLVA659A,215
NC 5.6V
COC54
C54
10µF
1
PID10
PID102
2
PIC5401
PIC5402
C
C
DVDD
GND
COR76
R76
10k R75
10k R74
10k R73
PIR710
10k R72
PIR70 1
10k R71
10k R70
COR70PIR70 2 COR71PIR7102 COR72PIR7202 COR73PIR7302 COR74PIR7402 COR75PIR7502
PIC510
PIC5102
COC51
C51
10µF
PIC5201
PIC5202
PIR7601
PIR7602
10.0k
COC52
C52
0.1µF
DVDD
COR30
R30
PIR3001
PIR7201 PIR7301 PIR7401 PIR7501
NI
J7
COJ7
GND
1
PIJ701
2
PIJ702
3
PIJ703
4
PIJ704
5
PIJ705
6
PIJ706
7
PIJ707
8
PIJ708
EVMSDDATA2
EVMSDDATA3
EVMSDCMD
EVMSDCLK
EVMSDDATA0
EVMSDDATA1
9
GND PIJ709
10
GND1 PIJ7010
11
CD PIJ7011
12
GND2 PIJ7012
13
GND3 PIJ7013
14
GND4 PIJ7014
DAT2
CD/DAT3
CMD
VDD
CLOCK
VSS
DAT0
DAT1
PIR3002
C53
COC53
0.1µF
COU7
U7
R31
COR31
PIR3101
GND
PIC5301
PIC5302
1
PIR3102
PIU701
47.0
2
PIU702
3
PIU703
4
PIU704
microSD
A0
A1
VCC
8
PIU708
GND
7
WP PIU707
ID_SCL
6
A2
SCL PIU706
VSS
5
SDA PIU705
NLID0SDA
ID_SDA
AT24C02C-XHM
Not Install: MOLEX 502570-0893
GND
GND
GND
D
Texas Instruments and/or its licensors do not warrant the accuracy or completeness of this specification or any information contained therein. Texas Instruments and/or its licensors do not
warrant that this design will meet the specifications, will be suitable for your application or fit for any particular purpose, or will operate in an implementation. Texas Instruments and/or its
licensors do not warrant that the design is production worthy. You should completely validate and test your design implementation to confirm the system functionality for your application.
1
2
3
4
GND
Number: ADS7851EVM Rev: A
SVN Rev: Not in version control
Drawn By:
Engineer: Luis Chioye
5
GND
D
Designed for: Public Release
Mod. Date: 3/25/2014
Project Title: ADS7851EVM
Sheet Title:
Assembly Variant: Variant name not interpreted Sheet: 1 of 1
File: Connector_ADS7851EVM_RevA.SchDoc
Size: B
Contact: http://www.ti.com/support
6
http://www.ti.com
© Texas Instruments 2013
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Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada
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