Texas Instruments BUF08832 User Manual Download Page 31

Evaluation Board/Kit Important Notice

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
PURPOSES ONLY 
and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the
product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are
not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations,
including product safety and environmental measures typically found in end products that incorporate such semiconductor
components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding
electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the
technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30
days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY
SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all
claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to
take any and all appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or infringement of
patents or services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the
product. This notice contains important safety information about temperatures and voltages. For additional information on TI’s
environmental and/or safety programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which such TI products or services might be or are used.

FCC Warning

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
PURPOSES ONLY 
and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and
can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15
of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this
equipment in other environments may cause interference with radio communications, in which case the user at his own expense
will be required to take whatever measures may be required to correct this interference.

EVM Warnings and Restrictions

It is important to operate this EVM within the input voltage range of of 5.7V to 9V; the BUF08832 Test Board within the supply
voltage range of 9V to 20V; and the output voltage range of BUF08832 Test Board must remain below 20V.

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User's 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, some circuit components may have case temperatures greater than +25°C. The EVM is designed to
operate properly with certain components above +25°C as long as the input and output ranges are maintained. These components
include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near
these devices during operation, please be aware that these devices may be very warm to the touch.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2009, Texas Instruments Incorporated

Summary of Contents for BUF08832

Page 1: ...EVM 9 7 Connecting the USB Cable 10 8 BUF08832EVM Default Jumper Settings 11 9 BKSEL Switch 14 10 BUF08832EVM Software Installation 16 11 BUF08832EVM Software Install Window 16 12 BUF08832EVM Softwar...

Page 2: ...5 Pin Male DSUB on BUF08832_Test_Board 6 2 BUF08832_Test_Board Jumper Functions 12 3 USB_DIG_Platform Jumper Functions 13 26 BUF08832_Test_Board Bill of Materials 30 2 BUF08832EVM User Guide and Softw...

Page 3: ...ation module 1 1 BUF08832EVM Kit Contents Figure 1 illustrates the hardware included with the BUF08832EVM kit Contact the Texas Instruments Product Information Center nearest you if any component is m...

Page 4: ...972 644 5580 When ordering identify the document by both title and literature number Related Documentation Document Literature Number BUF08832 Product Data Sheet SBOS476 USB DIG Platform Users Guide...

Page 5: ...a block diagram of the BUF08832_Test_Board The functionality of this PCB is relatively simple It provides connections to the I2 C interface and general purpose input outputs GPIO on the USB DIG Platf...

Page 6: ...ction 10 I2 C_SDA2 No connection 11 NC No connection I2 C clock signal SCL channel 1 can be 12 I2 C_SCK_ISO disconnected using a switch I2 C data signal SDA channel 1 can be 13 I2 C_SDA_ISO disconnect...

Page 7: ...gure 4 shows the block diagram for the USB DIG Platform This platform is a general purpose data acquisition system that is used on several different Texas Instruments evaluation modules The details of...

Page 8: ...bserve proper ESD handling precautions when unpacking and handling the EVM including the use of a grounded wrist strap at an approved ESD workstation 3 2 Typical Hardware Connections To set up the BUF...

Page 9: ...4 Connecting Power After the two parts of the BUF08832EVM are connected as Figure 6 shows connect the power to the EVM Always connect power before connecting the USB cable If you connect the USB cable...

Page 10: ...und New Hardware USB Human Interface Device This pop up indicates that the device is ready to be used The USB DIG Platform uses the human interface device drivers that are part of the Microsoft Window...

Page 11: ...rough 5 on the BUF08832_Test_Board are all typically set to the same position When set to the INT position the signals for digital supply bank select and the digital communication lines are generated...

Page 12: ...IG_Platform or whether JMP3 INT digital supply pin is connected to terminal T1 allowing for an external supply to power the digital circuitry The default INT position connects the VSD pin to the VDUT...

Page 13: ...he only reason to change from the default setting is if multiple boards are being used This jumper selects the voltage of the device under test supply VDUT 5V or 3V This jumper is JUMP9 5V typically t...

Page 14: ...her Bank 0 or Bank 1 OTP is selected The EXT position for JMP2 allows for an external control signal connected to terminal T3 to determine the selection of which OTP bank to be used 3 7 4 JMP3 VSD Con...

Page 15: ...ation should be populated at a time The use of both locations simultaneously will likely damage one or both of the devices being tested 3 7 8 Terminal Strip T5 Terminal strip T5 provides the individua...

Page 16: ...rt the installation process as shown in Figure 10 Figure 10 BUF08832EVM Software Installation The BUF08832 software installer file then opens to begin the installation process as Figure 11 shows Figur...

Page 17: ...button to complete the installation procedure 4 3 Software Description and Set Up The BUF08832EVM software allows the user to read and write to all registers in the BUF08832 gamma correction buffer Fu...

Page 18: ...From Start select All Programs then select the BUF08832EVM program Figure 13 shows how the software should appear if the EVM is functioning properly Figure 13 BUF08832EVM Software Functioning Properl...

Page 19: ...ason for this problem is that there may be a problem with your computer USB human interface device driver Make sure that when you plug the in the USB cable the computer recognizes the device If the so...

Page 20: ...tween the BUF08832EVM and the software Without jumper JMP1 and the software address button configured correctly the software will not be able to communicate with the BUF08832 device Figure 15 BUF08832...

Page 21: ...hown in Figure 17 Figure 17 Measuring and Entering Power Supply Voltage The voltage out of each DAC is calculated according to the VS value entered For example changing the value in the channel 6 cell...

Page 22: ...e output voltages change at the same time rather than each channel voltage changing as soon as it is written to Disabling the Auto Write feature in the software allows the user to enter all of the val...

Page 23: ...boxes to the respective current corresponding values 5 2 6 Save to File Button The register configurations of the BUF08832 DACs are displayed in both analog voltage and in hexadecimal see Figure 13 T...

Page 24: ...ad data saved from previous evaluations A saved register configuration can be loaded into the BUF08832 using the Load From File button as shown in Figure 21 The program remembers where you saved the l...

Page 25: ...Code buttons on the main software window These buttons allow for fine and coarse adjustments respectively to the highlighted channel giving the user the ability to quickly step the channel output up...

Page 26: ...ired channel output The DAC code and corresponding output value of each channel change automatically This function is similar to the slider present on the primary BUF08832EVM software window that chan...

Page 27: ...atile memory in the BUF08832 All eight channels including the VCOM channels are then programmed simultaneously The values are stored in the memory bank that is selected via the BKSEL switch see Sectio...

Page 28: ...ows 1 Three times Max bank shows 2 16 times Max bank shows 15 Figure 25 Max Bank Field 6 BUF08832EVM Documentation This section contains the complete bill of materials and schematic diagram for the BU...

Page 29: ...BKSEL 12 Vs2 19 OUT1 3 OUT2 4 OUT3 5 OUT4 6 OUT5 15 OUT6 16 OUT7 17 OUT8 18 Vcom 1 Vcom_fb 20 U2 BUF08832 C8 0 1uF Vs C7 0 1uF 1 2 T1 T_STRIP2 GND Vsd C9 4 7uF C10 1uF Vsd 1 2 3 JMP3 Vdut Ext Int Vsd...

Page 30: ...ts SN74LVC1G17DBVR SOT235 CONN D SUB PLUG R A 25POS 11 1 DSUB25M J1 30GOLD With Threaded Inserts AMP Tyco Electronics 5747842 4 and Board locks SWITCH TOGGLE SPDT 4VA PC 12 1 S1 E Switch 200AWMSP1T1A1...

Page 31: ...ation about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted u...

Page 32: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

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