Texas Instruments DAC8541EVM Скачать руководство пользователя | Manualshive

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DAC8541EVM

August 2002

Data Acquisition

User’s Guide

SLAU085A

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Содержание DAC8541EVM

Страница 1: ...DAC8541EVM August 2002 Data Acquisition User s Guide SLAU085A...

Страница 2: ...t 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 wh...

Страница 3: ...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 r...

Страница 4: ...here 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 design...

Страница 5: ...am and circuit descriptions are included How to Use This Manual This document contains the following chapters Chapter 1 EVM Overview Chapter 2 Physical Description Chapter 3 EVM Operation Information...

Страница 6: ...a Converter evaluation modules feel free to e mail the Data Converter Application Team at dataconvapps list ti com Include in the subject heading the product you have questions or concerns with FCC Wa...

Страница 7: ...2 Physical Description 2 1 2 1 PCB Layout 2 2 2 2 Bill of Materials 2 5 3 EVM Operation 3 1 3 1 Factory Default Setting 3 2 3 2 Host Processor Operation 3 2 3 2 1 Unity Gain Output 3 2 3 2 2 Output Ga...

Страница 8: ...n With the DAC8541 3 4 3 2 DAC8541 Bipolar Output of Operation 3 5 Tables 2 1 Parts Lists 2 5 3 1 Factory Default Jumper Setting 3 2 3 2 Unity Gain Output Jumper Settings 3 3 3 3 Gain of Two Output Ju...

Страница 9: ...This chapter gives a general overview of the DAC8541EVM and describes some of the factors that must be considered in using this module Topic Page 1 1 Features 1 2 1 2 Power Requirements 1 2 1 3 EVM B...

Страница 10: ...load drive or DAC bipolar mode operation The 15 V supply connects through the J6 1 or J9 2 terminal and the 15 V supply connects through the J6 3 or J9 4 terminal The 15 V supply is referenced to gro...

Страница 11: ...P that is used to interface with the right adapter card Call or email TI for more information regarding the adapter card A precision reference voltage provided onboard can be adjusted to the user s pr...

Страница 12: ...lock Diagram DAC Module Output Buffer Module W6 Reference Module W6 TP2 VREF Ext Ref Input VCC DVCC 15 V 15 V J6 J7 J6 J7 J1 TP1 VREF Ext Ref Input W1 W5 J1 DAC Out 15 V GND 15 V GND VCC DVDD PD0 PD1...

Страница 13: ...ription Physical Description This chapter describes the physical characteristics and PCB layout of the EVM and lists the components used on the module Topic Page 2 1 PCB Layout 2 2 2 2 Bill of Materia...

Страница 14: ...circuit board using a copper clad FR 4 laminate material The printed circuit board has a dimension of 99 06 mm 3 90 inch 104 14 mm 4 10 inch and the board thickness is 1 57 mm 0 062 inch Figures 2 2 t...

Страница 15: ...PCB Layout 2 3 Physical Description Figure 2 2 Layer Two Bottom Layer...

Страница 16: ...PCB Layout 2 4 Figure 2 3 Drill Drawing...

Страница 17: ...16 01 S DV M 16X2X0 1 32 pin 0 025 sq SMT terminal strips 14 1 R1 Panasonic ERJ 8GEYJ330V 33 1 4 W 1206 chip resistor 15 1 R5 Bourns 3214W 104E 100 k BOURNS_32X4W series 5T Pot 16 1 J5 see Note AMP Ty...

Страница 18: ...2 6...

Страница 19: ...EVM to a specific host processor For information about its parallel interface and other related topics refer to the DAC8541 data sheet TI literature number SLAS353 The EVM board is factory tested and...

Страница 20: ...1 header connector for the data input The output can be monitored through the J5 BNC connector if installed or J4 header connector An interface adapter card is also available for specific DSP starter...

Страница 21: ...4 With this configuration the effective output of the op amp is at a maximum of VCC The reference voltage must also be set to VCC 2 Table 3 3 shows the proper jumper settings for the 2 gain output of...

Страница 22: ...The rail to rail operation at the amplifier output is achievable using an OPA627 as the output amplifier Figure 3 1 Bipolar Operation With the DAC8541 _ OPA627 15 V 15 V R2 10 k VOUTSENSE VOUT DAC8541...

Страница 23: ...If BTC USB 1 8000h corresponds to 5 V output and 7FFFh corresponds to 5 V output Bipolar zero is given by the code 0000h applied to the DAC Figure 3 2 DAC8541 Bipolar Output of Operation DAC8541 Outp...

Страница 24: ...polar application W4 1 3 Positive supply rail of op amp U2 is 15 V W4 1 3 Positive supply rail of op amp U2 is VCC 2 6 4 1 5 3 Routes the raw output of the DAC8531 to J4 2 and J5 output terminals W5 2...

Страница 25: ...Schematic Diagram 3 7 EVM Operation 3 4 Schematic Diagram This section contains the schematic diagram for the DAC8541EVM...

Страница 26: ...A B C W5 CLD_OUT W3 R2 0 DAC_VOUT GND 4 TRIM 5 NC 1 NC 7 NC 8 TEMP 3 OUT 6 V 2 U3 REF02AU 8 C10 10uF C6 0 1uF 15V 1 3 TP2 TP3 EXTERNAL REFERENCE 1 2 3 R5 100K R4 20K VREF 1 2 3 R3 10K TP1 EXTERNAL RE...

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