background image

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 0 V to 1.4 V and the output voltage range of -4 V to 4 V.

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 50

°

C. The EVM is designed to operate

properly with certain components above 50

°

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 © 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...

Page 14: ......

Page 15: ......

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...

Reviews: