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IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide
adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information
published by TI regarding third-party products or services does not constitute a license from TI 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 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. Reproduction of this information with alteration is an unfair and deceptive
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional
restrictions.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. 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 reasonably
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in
such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are
designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated
products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products

Applications

Amplifiers

amplifier.ti.com

Audio

www.ti.com/audio

Data Converters

dataconverter.ti.com

Automotive

www.ti.com/automotive

DSP

dsp.ti.com

Broadband

www.ti.com/broadband

Clocks and Timers

www.ti.com/clocks

Digital Control

www.ti.com/digitalcontrol

Interface

interface.ti.com

Medical

www.ti.com/medical

Logic

logic.ti.com

Military

www.ti.com/military

Power Mgmt

power.ti.com

Optical Networking

www.ti.com/opticalnetwork

Microcontrollers

microcontroller.ti.com

Security

www.ti.com/security

RFID

www.ti-rfid.com

Telephony

www.ti.com/telephony

RF/IF and ZigBee® Solutions

www.ti.com/lprf

Video & Imaging

www.ti.com/video

Wireless

www.ti.com/wireless

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

Copyright 2008, Texas Instruments Incorporated

Summary of Contents for VCA8500BOARD

Page 1: ...ration 3 5 1 Default Power Up Mode 3 5 2 PC Control Mode 4 5 3 Direct Control Mode 4 6 VCA8500BOARD Full Access Software 4 6 1 Loading the Software 4 6 2 Initial Start up Screen 4 6 3 Other Program Fu...

Page 2: ...W and VCA circuits P2 3 3 V Positive VCA Supply This positive 3 3 V supplies the LNA Digital circuit and VCA Outputs Ensure that all three pads of W1 solder jumper are shorted P2 5 V 5 V Supplies for...

Page 3: ...ut capability To increase the output capability of the THS4021 ensure that W2 and W3 are open and supply 15 V to P3 The VCA8500BOARD contains a microcontroller to access internal functions The microco...

Page 4: ...he entire device functionality is available for testing The software provides the ability to select any of the clamp ranges and PGA gains settings direct an input to any CW output or power down the co...

Page 5: ...t program settings In order to activate these settings click Download When Reset is selected all options are set to these same default settings The Chip Power option only affects the VCA8500 and no ot...

Page 6: ...channel Figure 4 shows this process Figure 4 CW Options Selection Once all the selections have been made click Download to send the data to the VCA8500 It is possible because of the flexible nature of...

Page 7: ...xas Instruments Web site ti com by looking in the VCA8500 product folder in the Tools and Software section Selecting the Exit command button exits the program The Help pull down menu contains informat...

Page 8: ...www ti com Printed Circuit Board Layout Bill of Materials and Schematic Figure 6 Ground Figure 7 Power Plane 1 8 VCA8500BOARD SLOU216 January 2008 Submit Documentation Feedback...

Page 9: ...www ti com Printed Circuit Board Layout Bill of Materials and Schematic Figure 8 Power Plane 2 SLOU216 January 2008 VCA8500BOARD 9 Submit Documentation Feedback...

Page 10: ...www ti com Printed Circuit Board Layout Bill of Materials and Schematic Figure 9 Ground 10 VCA8500BOARD SLOU216 January 2008 Submit Documentation Feedback...

Page 11: ...22 C24 Capacitor SMT 0402 Capacitor SMT 0402 CER 0 1 F C27 C34 C39 C42 10V 10 X5R C45 C48 C51 C52 C55 C56 C59 C62 C65 C68 C73 C76 C79 C82 C87 C89 C94 C95 C99 C101 C108 C110 C112 C117 C120 C124 C128 C1...

Page 12: ...4 DUT SMT QFN RGC 64 0 5mm LS 9x9x1mm THRM PAD 15 4 Samtex TSW 106 05 G S P2 P4 P6 Header THU 6P Header 1X6 1CTR 16 1 Maxim MAX3221CAE U21 IC SMT 16P RS 232 Transceivers 17 10 TI THS4021CD U1 U10 IC S...

Page 13: ...1k 1 1 16W R145 R149 R156 R158 R163 R165 R171 R183 R192 R197 R204 R206 32 9 Panasonic ERJ 2RKF4020X R173 R181 RES SMT 0402 RES SMT 0402 402 1 1 16W 33 10 Panasonic ERJ 2RKF6341X R1 R2 R11 R12 R37 R38...

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Page 16: ...oduct 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 engine...

Page 17: ...siness practice 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 wo...

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