Texas Instruments DAC8560 User Manual
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Texas Instruments DAC8560 User Manual

Texas Instruments DAC8560 User Manual

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This user's guide describes the characteristics, operation, and the use of the DAC8560 evaluation module
(EVM). It covers all pertinent areas to properly use this EVM board along with the devices that it supports.
The physical PCB layout, schematic diagram, and circuit descriptions are included.
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Microsoft, Windows are registered trademarks of Microsoft Corporation.
LabVIEW is a registered trademark of National Instruments.
All other trademarks are the property of their respective owners.
SLAU211A - March 2007 - Revised November 2009
Submit Documentation Feedback
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Copyright © 2007-2009, Texas Instruments Incorporated
SLAU211A - March 2007 - Revised November 2009
DAC8560 Evaluation Module
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User's Guide
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  • Page 1: Table Of Contents

    SLAU211A – March 2007 – Revised November 2009 DAC8560 Evaluation Module This user’s guide describes the characteristics, operation, and the use of the DAC8560 evaluation module (EVM). It covers all pertinent areas to properly use this EVM board along with the devices that it supports.

  • Page 2: Evm Overview

    EVM Overview www.ti.com EVM Overview This section gives a general overview of the DAC8560 evaluation module (EVM), and describes some of the factors to consider when using this module. Features This EVM features the DAC8560 digital-to-analog converter (DAC). The DAC8560EVM is a simple evaluation module designed to quickly and easily evaluate the functionality and performance of the 16-bit high-resolution, single-channel, and serial input DAC with a built-in 2.5-V internal reference that is enabled...
  • Page 3 W7 for the reason of stacking. The V pin is discussed further in section 3 of this user’s guide manual. Stacking allows a total of two (DAC8560) DAC channels to be used provided the frame synchronization signal, SYNC, is unique for each EVM board stacked.

  • Page 4: Pcb Design And Performance

    (3.2500 inch), and the board thickness is 1,5748 mm (0.062 inch). Figure 2 through Figure 6 show the individual artwork layers. DAC8560 Evaluation Module SLAU211A – March 2007 – Revised November 2009 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 5: Top Silkscreen

    PCB Design and Performance www.ti.com Figure 2. Top Silkscreen Figure 3. Layer 1 (Top Signal Plane) SLAU211A – March 2007 – Revised November 2009 DAC8560 Evaluation Module Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 6: Layer 1 (Top Signal Plane)

    PCB Design and Performance www.ti.com Figure 4. Layer 2 (Ground Plane) Figure 5. Layer 3 (Power Plane) DAC8560 Evaluation Module SLAU211A – March 2007 – Revised November 2009 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 7: Layer 3 (Power Plane)

    PCB Design and Performance www.ti.com Figure 6. Layer 4 (Bottom Signal Plane) Figure 7. Bottom Silkscreen SLAU211A – March 2007 – Revised November 2009 DAC8560 Evaluation Module Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 8: Evm Operation

    DAC and how to interface the EVM to a specific host processor. See the DAC8560 data sheet, SLAS264, for information about its serial interface and other related topics. The EVM board is factory tested and configured to operate in the unipolar output mode.

  • Page 9: Dac8560Evm Default Jumper Configuration

    Table 1. Factory Default Jumper Settings Jumper Reference Function Position Analog supply for the DAC8560 is +5 VA. DAC output (V ) is routed to J4-2. is not routed to the inverting input of the operational amplifier for voltage offset (for bipolar mode of OPEN operation).

  • Page 10: Dac Output Channel Mapping

    EVM Stacking The stacking of EVMs is possible if the user needs to evaluate two DAC8560 devices to yield a total of up to two (DAC8560) channel outputs. A maximum of two EVMs are allowed because the output terminal, J4, dictates the number of DAC channels that can be connected without output bus contention.

  • Page 11: Unity Gain Output Jumper Settings

    3.4.1 Unity Gain Output The buffered output configuration can be used to prevent loading the DAC8560, although it may present some slight distortion because of the feedback resistor and capacitor. The user can tailor the feedback circuit to closely match the desired wave shape by simply desoldering R6 and C12 and replacing them with components of the desired values.

  • Page 12: Capacitive Load Drive Output Jumper Settings

    Negative supply rail of the output operational amplifier, U2, is tied to AGND for unipolar operation. CS signal from J2-1 is routed to drive the SYNC signal of the DAC8560. FSX signal from J2-7 is routed to drive the SYNC signal of the DAC8560.
  • Page 13 Connects the inverting input of the output operational amplifier, U2, to the gain resistor, R12, for gain of 2 configuration. Legend: Indicates the corresponding pins that are shorted or closed. SLAU211A – March 2007 – Revised November 2009 DAC8560 Evaluation Module Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 14: Dac8560Evm Schematic

    EVM Operation www.ti.com Schematic Figure 10. DAC8560EVM Schematic DAC8560 Evaluation Module SLAU211A – March 2007 – Revised November 2009 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...

  • Page 15: Related Documentation From 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 ordering, identify this manual by its title and literature number. Updated documents also can be obtained through the TI Web site at www.ti.com.

  • Page 16: Mmb0 With Dac8560Evm Installed

    Using the DAC8560 EVM with DXP www.ti.com Figure 11. MMB0 with DAC8560EVM Installed MMB0 Power Supplies Several power connections are required for the hardware to work properly. For the MMB0, the supplied 6-V ac/dc converter is all that is necessary. Be sure that J12 on the MMB0 board is closed before connecting the ac/dc adapter to the DC In connector of the MMB0.

  • Page 17: Loading A Dac8560Evm Configuration

    Using the DAC8560 EVM with DXP www.ti.com Software: Running DXP Install DXP on a laptop or personal computer running Windows XP according to the detailed instruction in the DXP Users Guide (TI document SBAU146). Run the DXP program by clicking on the DXP icon on your desktop, or by browsing to your installation directory.

  • Page 18: Dac8560Evm: Frequency/Amplitude And Update Rate Adjustments

    Using the DAC8560 EVM with DXP www.ti.com The DXP software defaults to output a 1-kHz sine wave from the DAC. Other waveform options include square, sawtooth, triangle, and dc output options, as described in the DXP User's Guide. The frequency and amplitude of the output waveform are controlled by sliders on the DXP software interface.

  • Page 19: Bill Of Materials

    The DXP software defaults to Frame Sync. The Frame Sync output of the MMB0 connects to the SYNC input of the DAC8560. The DAC output changes to the corresponding level when the DAC latch is updated via SDI. Ensure the shunt jumper on W6 is covering pins 2-3 (default is 1-2) to use this feature.
  • Page 20 J-designated counterpart. Example, J2 is installed on the topside whereas P2 is installed in the bottom side opposite of J2. Do NOT install the following: C6, R5, R7, R16, and R25. DAC8560 Evaluation Module SLAU211A – March 2007 – Revised November 2009 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated...
  • Page 21 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.
  • Page 22 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.
  • Page 23 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments DAC8560EVM DAC8560EVM-PDK...

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