Texas Instruments BUF12800 User Manual Download Page 31

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
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.

Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.

Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.

In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.

No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.

Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have

not

been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and

regulatory requirements in connection with such use.

TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.

Products

Applications

Audio

www.ti.com/audio

Automotive and Transportation

www.ti.com/automotive

Amplifiers

amplifier.ti.com

Communications and Telecom

www.ti.com/communications

Data Converters

dataconverter.ti.com

Computers and Peripherals

www.ti.com/computers

DLP® Products

www.dlp.com

Consumer Electronics

www.ti.com/consumer-apps

DSP

dsp.ti.com

Energy and Lighting

www.ti.com/energy

Clocks and Timers

www.ti.com/clocks

Industrial

www.ti.com/industrial

Interface

interface.ti.com

Medical

www.ti.com/medical

Logic

logic.ti.com

Security

www.ti.com/security

Power Mgmt

power.ti.com

Space, Avionics and Defense

www.ti.com/space-avionics-defense

Microcontrollers

microcontroller.ti.com

Video and Imaging

www.ti.com/video

RFID

www.ti-rfid.com

OMAP Applications Processors

www.ti.com/omap

TI E2E Community

e2e.ti.com

Wireless Connectivity

www.ti.com/wirelessconnectivity

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

Copyright © 2016, Texas Instruments Incorporated

Summary of Contents for BUF12800

Page 1: ...hematic printed circuit board PCB layout drawings and a parts list for the EVM Contents 1 Overview 2 2 BUF12800EVM Hardware Setup 3 3 BUF12800EVM Hardware 5 4 BUF12800EVM Features 11 5 BUF12800EVM Sof...

Page 2: ...you also check the BUF12800 product folder on the TI web site at www ti com to verify that you have the latest versions of the related software Table 1 BUF12800EVM Kit Contents Item Quantity BUF12800...

Page 3: ...l 2 BUF12800EVM Hardware Setup This section discusses the overall system setup for the BUF12800EVM The PC runs software that communicates with the USB_DIG_Platform The USB DIG Platform generates the a...

Page 4: ...ard Block Diagram 2 2 Signal Definitions of J1 25 Pin Male DSUB Table 3 shows the various signals connected to J1 on the BUF12800 test board 1 When power is switched off digital I O is also switched o...

Page 5: ...neral purpose data acquisition system that is used on several different Texas Instruments evaluation modules The details of its operation are included in a separate document SBOU058 available for down...

Page 6: ...n applying power The external connections may be connected to the real world system that the BUF12800 is to be incorporated into Figure 4 shows the typical hardware connections Figure 4 Typical Hardwa...

Page 7: ...Note that it is always necessary to connect the power to the DIG before connecting the USB cable If the USB cable is connected before the power the computer may attempt communication to an unpowered...

Page 8: ...cable Typically the computer responds with a Found New Hardware USB Device pop up dialog The popup window typically changes to Found New Hardware USB Human Interface Device This pop up window indicate...

Page 9: ...al 3 6 BUF12800EVM Default Jumper Settings Figure 8 shows the default jumpers configuration for the BUF12800EVM In general the jumper settings of the USB DIG Platform do not need to be changed You may...

Page 10: ...The default INT position connects the SDA pin to the I2C_SDA_ISO control signal JMP4 INT This jumper selects whether the LD pin on the BUF12800 is connected to jumper JMP5 or whether the LD pin is co...

Page 11: ...t supply VDUT 5 V or 3 V This jumper is typically the only jumper that changes for most applications JUMP10 WP ON This write protects the firmware EEPROM JUMP11 WP ON This write protects the calibrati...

Page 12: ...5 is used to select the reference voltage that is connected to the LD latch pin It is used only when jumper JMP4 is set to INT If JMP5 is set to H the latch pin is connected to the VSD supply voltage...

Page 13: ...n while the device is placed in this socket it cannot be operated to its full output capability as a result of thermal dissipation limitations CAUTION Only one location should be populated at a time T...

Page 14: ...art the installation The BUF12800 software installer file then opens to begin the installation process as shown in Figure 9 Figure 9 BUF12800EVM Software Install Window After the installation process...

Page 15: ...ustrates Once the installation process is completed click Finish Figure 11 BUF12800EVM Software Installation Progress 5 3 Software Description and Set Up The BUF12800EVM software allows the user to re...

Page 16: ...00EVM Software Overview This section discusses how to use the BUF12800EVM software 6 1 Starting the BUF12800EVM Software The BUF12800EVM software can be operated through the Start menu in Windows From...

Page 17: ...problem with the USB Human Interface Device Driver on the computer you are using Make sure that the device is recognized when the USB cable is plugged in this action is indicated by a Windows generat...

Page 18: ...e 16 JMP6 Setting for Logic 1 6 2 2 Measuring the Power Supply You must measure the power supply VS with respect to the GND on the BUF12800 Test Board and enter it in the Vsup field located in the top...

Page 19: ...e 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 desired values for all of the cha...

Page 20: ...hexadecimal refer to Figure 13 The DAC codes that is gamma voltages can also be saved to a text file txt using the Save to File button Pressing the Save to File button opens a file save dialog box sim...

Page 21: ...ext file that can be opened in a text editor as illustrated in Figure 20 Figure 20 Saved Data Format 6 2 7 Load From File Button The BUF12800EVM software is also able to load data saved from previous...

Page 22: ...selected Adjusting the slider bar then only updates the highlighted channel The final method to change the DAC voltages is through the 1 Code and 5 Code buttons on the main software window These butt...

Page 23: ...the Control Panel button brings up a display panel that allows you to adjust each channel using a set of graphical sliders as shown in Figure 23 Simply drag the slider to adjust the desired channel ou...

Page 24: ...al 7 BUF12800EVM Documentation This section contains the complete bill of materials and PCB layout for the BUF12800EVM NOTE These board layouts are not to scale These image are intended to show how th...

Page 25: ...ised August 2016 Submit Documentation Feedback Copyright 2011 2016 Texas Instruments Incorporated BUF12800EVM Evaluation Board and Software Tutorial 7 2 PCB Layout Figure 25 shows the PCB layout of th...

Page 26: ...onnector D SUB Plug R A 25 Pos 30 Gold with threaded inserts and board locks AMP Tyco Electronics 5747842 4 8 4 T1 to T4 Terminal block 5 MM 2 Pos On Shore Technology Inc ED300 2 9 1 T5 Terminal block...

Page 27: ...ing 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 repa...

Page 28: ...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 indic...

Page 29: ...ified 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 sens...

Page 30: ...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 L...

Page 31: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

Reviews: