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Contents

vii

Contents

EVM Overview

1-1

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1.1

Features

1-2

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Analog Interface

2-1

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2.1

Analog Interface Block Diagram

2-2

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2.2

Signal Conditioning

2-2

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2.3

Single Supply Operation

2-2

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2.4

Physical Pinout Description

2-3

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2.5

Reference Voltage

2-3

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2.6

Configuration Options

2-4

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Digital Interface

3-1

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3.1

Physical Pinout Description

3-2

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Power Supply

4-1

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Getting the Most From Your EVM

5-1

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5.1

Additional Hardware Options

5-2

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5.1.1

Stand-Alone EVM

5-2

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5.1.2

DSP Interface

5-2

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5.1.3

MSP430 Microcontroller interface

5-3

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Bill of Materials, Board Layouts, and Schematic

6-1

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6.1

Bill of Materials for EVM

6-2

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6.2

Board Layouts

6-4

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6.3

EVM Schematic

6-7

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Содержание TLC2574EVM

Страница 1: ...TLC3578EVM Family August 2003 Data Acquisition Digital Analog Converters User s Guide SLAU110 ...

Страница 2: ...titute 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 information in TI data books or data sheets is permissible only if reproduction ...

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 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 A...

Страница 4: ... 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 60 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 an...

Страница 5: ...l analog to digital converter TLC2578 EVM Bipolar Input 8 channel 12 bit serial analog to digital converter TLC2574 EVM Bipolar Input 4 channel 12 bit serial analog to digital converter A complete circuit description as well as schematic diagram and bill of materials is included Contact the Product Information Center or e mail dataconvapps list ti com for questions regarding this EVM How to Use Th...

Страница 6: ...e the user at his own expense will be required to take whatever measures may be required to correct this interference Trademarks TI logo is a trademark of Texas Instruments Related Documentation From Texas Instruments To obtain a copy of any of the following TI documents call the Texas Instruments Literature Response Center at 800 477 8924 or the Product Information Center PIC at 972 644 5580 When...

Страница 7: ...ference Voltage 2 3 2 6 Configuration Options 2 4 3 Digital Interface 3 1 3 1 Physical Pinout Description 3 2 4 Power Supply 4 1 5 Getting the Most From Your EVM 5 1 5 1 Additional Hardware Options 5 2 5 1 1 Stand Alone EVM 5 2 5 1 2 DSP Interface 5 2 5 1 3 MSP430 Microcontroller interface 5 3 6 Bill of Materials Board Layouts and Schematic 6 1 6 1 Bill of Materials for EVM 6 2 6 2 Board Layouts 6...

Страница 8: ...agram 5 3 6 1 Top Layer 6 4 6 2 Internal Plane 1 6 5 6 3 Internal Plane 2 6 5 6 4 Bottom Layer Mirrored 6 6 Tables 2 1 Analog Input Pinout Description 2 3 2 2 ADC Reference Voltage 2 3 2 3 Jumper Settings 2 4 3 1 Digital Signal Pinout Description 3 2 4 1 Power Connector Pinout Description 4 1 ...

Страница 9: ...ADCs use a synchronous serial interface which can be simply interfaced to many micro controllers using the SPI protocol Each EVM also incorporates a stable voltage reference and operational amplifier to ensure a low noise voltage reference for the ADC Topic Page 1 1 Features 1 2 Chapter 1 ...

Страница 10: ... order TLC3578 EVM J TLC3574 ADC order TLC3574 EVM J TLC3548 ADC order TLC3548 EVM J TLC3544 ADC order TLC3544 EVM J TLC2578 ADC order TLC2578 EVM J TLC2574 ADC order TLC2574 EVM Onboard reference with recommended buffer circuitry Suggested signal conditioning circuitry for 1 channel only ...

Страница 11: ...g Interface Topic Page 2 1 Analog Interface Block Diagram 2 2 2 2 Signal Conditioning 2 2 2 3 Single Supply Operation 2 2 2 4 Physical Pinout Description 2 3 2 5 ADC Reference Voltage 2 3 2 6 Configuration Options 2 4 Chapter 2 ...

Страница 12: ...erational amplifier The amplifier present on the EVM operates from a dual power supply and is configured with a gain of 1 If signal conditioning is not required it can easily be bypassed via a shorting bar 2 3 Single Supply Operation Should the user wish to operate the amplifier from a single suply rail this is also possible by simply removing the dual supply amplifier and replacing it with a suit...

Страница 13: ...ector P1 12 J1 12 CH5 Channel 5 input direct from P1 J1 connector P1 14 J1 14 CH6 Channel 6 input direct from P1 J1 connector P1 16 J1 16 CH7 Channel 7 input direct from P1 J1 connector P1 18 J1 18 REF External Reference negative input P1 20 J1 20 REF External Reference positive input 2 5 Reference Voltage The accuracy of conversion from a SAR ADC depends directly upon the accuracy of the referenc...

Страница 14: ...talled W2 Select negative supply for op amp Vs AGND 0 V W3 Select positive supply for op amp Vs Vcc 5 V W4 Select signal source for channel 0 Signal is via op amp Signal is directly from P1 2 W5 Select positive voltage reference Onboard reference Reference via P1 18 W6 Select digital power 5 V 3 3 V W7 Select negative voltage reference Onboard reference Reference via P1 20 W8 CSTART initiate manua...

Страница 15: ...igital Interface The digital interface for the EVM is simply the appropriate digital signals from the ADC routed and presented to the 20 pin digital interface connector Topic Page 3 1 Physical Pinout Description 3 2 Chapter 3 ...

Страница 16: ... com or 1 800 SAMTEC 9 for a variety of mating connector options Table 3 1 Digital Signal Pinout Description Pin Number Header Socket Signal Description P3 1 J3 1 CS Chip select selects the device for data transfer P3 3 J3 3 SCLK CLKX Data transfer clock P3 5 J3 5 Reserved P3 7 J3 7 FSX P3 9 J3 9 FSR P3 11 J3 11 SDI Serial data into the device P3 13 J3 13 SDO Serial data out of the device P3 15 J3...

Страница 17: ...de these voltages Hook up the test points on the EVM The test points are clearly labeled Vdd 3 3 V to 5 V 5VA Vs up to 18 V depending upon the amplifiers and Vs up to 18 V depending upon the amplifiers Use the power connector P5 J5 and derive the voltages elsewhere The pinout for this connector is shown in Table 4 1 Table 4 1 Power Connector Pinout Description Signal P5 J5 Pin Number Signal VA 1 2...

Страница 18: ...4 2 ...

Страница 19: ...otyping options and software solutions are available from TI and offer additional flexibility reducing your time to market Hardware and software offerings from TI help you easily get from concept to hardware and software prototype Topic Page 5 1 Additional Hardware Options 5 2 Chapter 5 ...

Страница 20: ...stem They contain all the necessary hardware and software to quickly begin prototype construction For example the TMS320C6711 DSP starter kit includes the DSK hardware a parallel port cable to connect to a PC a 5 V universal power supply and a Code Composer Studio CD ROM containing all the necessary software Each family of DSKs provides different physical interface options These interface options ...

Страница 21: ... Stackup Diagram Amplifier Site Evaluation Module Site DSK C5K 6K Interface Card C5K 6K Interface Card 80 Pin DSK Common Connector 5 1 3 MSP430 Microcontroller interface TI also offer a range of low power microcontrollers that have an SPI interface You can check out these devices and order evaluation modules at www ti com A microcomputer evaluation board exists featuring the MSP430F449 that also e...

Страница 22: ...5 4 ...

Страница 23: ... and Schematic Bill of Materials Board Layouts and Schematic This chapter contains the EVM bill of materials board layouts and schematics Topic Page 6 1 Bill of Materials for EVM 6 2 6 2 Board Layouts 6 3 6 3 EVM Schematic 6 6 Chapter 6 ...

Страница 24: ...9 C10 C14 Capacitor 27000 pF 50 V Ceramic X7R 0805 Panasonic ECJ 2VB1H273K 10 1 1 µF C18 Capacitor 1 ìF 10 V J Ceramic X5R 0805 Panasonic ECJ 2YB1A105K 11 1 10 µF C17 Capacitor 10 µF 16 V tantalum TE series Panasonic ECS T1CX106R 12 4 10 µF C2 C12 C19 C21 Capacitor 10 µF 16 V VS electrolytic SMD Panasonic ECE V1CA100SR 13 2 W1 W10 2 pin header Samtec TSW 102 07 L S 14 8 W2 W3 W4 W5 W6 W7 W8 W9 3 P...

Страница 25: ...OIC Texas Instruments TLC3544IPW Alternate TLC2578 U4 IC Serial out A D 8 CH 24 SOIC Texas Instruments TLC2578IPW Alternate TLC2574 U4 IC Serial out A D 4 CH 20 TSSOP Texas Instruments TLC2574IPW 23 2 SN74LVC1 G07 U5 U6 Single IC buffer driver with open drain o p Texas Instruments SN74LVC1G07DBVR 24 1 TLC3578 Rev A PWB Texas Instruments 6448024 25 4 TP_ 025 5VA VA VA Vdd Test Point Single 025 Pin ...

Страница 26: ...Board Layouts 6 4 6 2 Board Layouts Figure 6 1 Top Layer ...

Страница 27: ...Board Layouts 6 5 Bill of Materials Board Layouts and Schematic Figure 6 2 Internal Plane 1 Figure 6 3 Internal Plane 2 ...

Страница 28: ...Board Layouts 6 6 Figure 6 4 Bottom Layer Mirrored ...

Страница 29: ...EVM Schematic 6 7 Bill of Materials Board Layouts and Schematic 6 3 EVM Schematic The EVM schematic is a PDF attachment following this page ...

Страница 30: ...mber Approved TLC3578 EVM Block Diagram DOCUMENTCONTROL TLC3578 TLC3578 sch PWR REF PWR REF sch CH6 CH7 AGND 1 3 5 7 9 11 13 17 19 2 4 6 8 10 12 14 16 18 20 15 P1 REF REF CH4 CH5 CH2 CH3 CH0 CH1 DGND 1 3 5 7 9 11 13 17 19 2 4 6 8 10 12 14 16 18 20 15 P3 GPIO_1 FSX FSR R17 0R CLKX CS DATA_IN B_DATA_OUT B_INT EOC Joe Purvis Joe Purvis TLC3578 EVM Block Diagram 2 1 3 6448025 ...

Страница 31: ... EOC Amplifier Supply Amplifier Supply 6448025 2 2 3 Joe Purvis Joe Purvis C10 27nF C9 27nF C8 27nF C7 27nF C6 27nF C5 27nF C4 27nF C11 Not Installed C14 27nF R13 33R DATA_OUT DATA_IN W1 BCLK C15 0 1uF C17 10uF C18 1uF CS REF_M REF_P TLC3578 CLKX AIN0 9 AIN1 10 AIN2 11 AIN3 12 AIN4 13 AIN5 14 AIN6 15 AIN7 16 AVdd 17 AGND 18 AGND 22 DVdd 7 DGND 6 REFM 20 REFP 19 CS 8 SDO 5 SDI 3 SCLK 1 INT EOC 4 AV...

Страница 32: ...D AGND VA VA 5VA DGND AGND W6 In 2 In 3 Output 6 7 4 U3 R11 100R AGND VREF Amplifier Supply Amplifier Supply C3 10pF DGND AGND R14 Not Installed R19 0R AGND DGND DVdd Vdd DGND C21 10uF C22 0 1uF 1 2 3 4 5 6 7 8 9 10 P5 3 3V_D 5V_D R15 10R 1 3 5 7 9 11 13 17 19 2 4 6 8 10 12 14 16 18 20 15 P2 1 3 5 7 9 11 13 17 19 2 4 6 8 10 12 14 16 18 20 15 P4 GND 3 Vcc 5 NC 1 U6B SN74LVC1G07 C24 0 1uF C23 0 1uF ...

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