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EVM IMPORTANT NOTICE

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

This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY
and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of
required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically
found in the end product incorporating the goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may not meet the technical requirements of the directive.

Should this evaluation kit not meet the specifications indicated in the EVM User's Guide, the 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. Please be aware that the products received may not be regulatory compliant
or agency certified (FCC, UL, CE, etc.). 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 EVM User's Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM User's Guide prior to
handling the product. This notice contains important safety information about temperatures and voltages. For further safety
concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

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.

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

Copyright © 2005, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of ±15 V and the output voltage range of ±10 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 60°C. The EVM is designed to
operate properly with certain components above ° 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 © 2005, Texas Instruments Incorporated

Содержание DAC7741EVM

Страница 1: ...er EVM s 2 4 FCC Warnings 2 Trademarks 2 5 EVM Overview 3 6 EVM Basic Functions 4 7 Physical Description 5 8 Bill Of Materials 12 9 EVM Operation 13 List of Figures 1 EVM Block Diagram 4 2 Top Silkscr...

Страница 2: ...ents can also be obtained through the TI Web site at http www ti com Data Sheets Literature Number Data Sheets Literature Number DAC7741 SBAS248 SN74AHC541 SCLS261 REF102 SBVS022 SN74AHC138 SCLS258 OP...

Страница 3: ...d make sure that the correct cables are connected to their respective terminals as labeled on the EVM board Stresses above the maximum listed voltage ratings may cause permanent damage to the device 5...

Страница 4: ...rm generator The headers J1 and J3 are provided to connect the necessary control signals and data needed to interface a microprocessor microcontroller TI s DSP Starter Kit or waveform generator to the...

Страница 5: ...n the module The EVM is constructed on a four layer printed circuit board using a copper clad FR 4 laminate material The printed circuit board has a dimension of 96 52 mm 3 80 inch X 102 87 mm 4 050 i...

Страница 6: ...www ti com Physical Description Figure 3 Layer One Top Signal Plane DAC7741EVM 6 SLAU093A October 2002 Revised May 2005...

Страница 7: ...www ti com Physical Description Figure 4 Layer Two Split Ground Plane DAC7741EVM SLAU093A October 2002 Revised May 2005 7...

Страница 8: ...www ti com Physical Description Figure 5 Layer Three Split Power Plane DAC7741EVM 8 SLAU093A October 2002 Revised May 2005...

Страница 9: ...www ti com Physical Description Figure 6 Layer Four Bottom Signal Plane DAC7741EVM SLAU093A October 2002 Revised May 2005 9...

Страница 10: ...www ti com Physical Description Figure 7 Bottom Silkscreen DAC7741EVM 10 SLAU093A October 2002 Revised May 2005...

Страница 11: ...www ti com Physical Description Figure 8 Drill Drawing DAC7741EVM SLAU093A October 2002 Revised May 2005 11...

Страница 12: ...KT 10 F 1 15 3 J2 J3 J4 Samtec TSM 110 01 S DV M 20 PIN IDC 16 1 J6 Samtec TSM 105 01 T DV 10 PIN IDC 17 3 P2 P3 P4 Samtec SSW 110 22 S D VS P 20 PIN IDC 2 18 2 J11 J12 On Shore Tech ED555 3DS 3 Pin T...

Страница 13: ...pin is floated W10 OPEN RFB1 is floated W11 CLOSE AGND and DGND are tied together to a common point W12 2 3 The LDAC signal used is address decoded and translated to the DSP_LDAC W13 3 4 Buffered out...

Страница 14: ...y shorting the respective pins of W13 and selecting the position of W30 The following sections describe the different configurations of the output amplifier U2 9 2 1 Unity Gain Output The buffered out...

Страница 15: ...capacitive load requirement However all operational amplifiers under certain conditions may become unstable depending on the operational amplifier configuration gain and load value These are just few...

Страница 16: ...eference voltage Routes the onboard 10 V reference through the adjustable potentiometer to W3 and W14 W4 Routes the user supplied reference from TP1 or J4 20 through the adjustable poten tiometer to W...

Страница 17: ...y Disconnects the negative terminal of U2 to AGND and disables 2x gain W15 Configures U2 for a 2x gain output RSTSEL pin is pulled high and configures the DAC to mid scale when POR or reset is initiat...

Страница 18: ...n DSP_R W signal function The C6x_WR signal is routed for the combination DSP_R W signal function W27 WR signal if using C5x DSP is routed for the combination DSP_R W signal function The combination C...

Страница 19: ...D9 D10 D11 D12 D13 D14 D15 W18 5VD 5VD 5VD 5VD 3 3VD 5VD 1DIR 1 1B1 2 1B2 3 GND 4 1B3 5 1B4 6 VCC 7 1B5 8 1B6 9 GND 10 1B7 11 1B8 12 2B1 13 2B2 14 GND 15 2B3 16 2B4 17 VCC 18 2B5 19 2B6 20 GND 21 2B7...

Страница 20: ...20K exREFin 1 2 3 R9 20K 5VD W4 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 DB12 DB13 DB14 DB15 C6 10 F C4 10 F C5 10 F DB0 16 DB1 17 DB2 18 DB3 19 DB4 20 DB5 21 DB6 22 DB7 27 DB8 28 DB9 29 DB10...

Страница 21: ...tents or services described herein Please read the EVM User s Guide and specifically the EVM Warnings and Restrictions notice in the EVM User s Guide prior to handling the product This notice contains...

Страница 22: ...iness 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 wou...

Страница 23: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments DAC7741EVM...

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