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ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and
Figure 1. ADS1274EVM (Left) and ADS1274EVM-PDK (Right)
This user's guide describes the characteristics, operation, and use of the ADS1174EVM and
ADS1274EVM, both by themselves and as part of the ADS1174EVM-PDK or ADS1274EVM-PDK. These
evaluation modules (EVMs) are evaluation boards for the ADS1274, a 24-bit multi-channel, delta-sigma
analog-to-digital converter (ADC), and the ADS1174, a 16-bit version of the ADS1274. The EVM allows
evaluation of all aspects of the ADS1174 or ADS1274 devices. Complete circuit descriptions, schematic
diagrams, and bills of material are included in this document.
The following related documents are available through the Texas Instruments web site at www.ti.com.
Device
ADS1274
ADS1174
REF5025
REF3125
OPA2350
ADCPro is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
SPI is a trademark of Motorola.
2
I
C is a trademark of NXP Semiconductors.
NI-VISA is a trademark of National Instruments.
All other trademarks are the property of their respective owners.
SBAU134A – August 2008 – Revised May 2009
Submit Documentation Feedback
EVM-Compatible Device Data Sheets
Literature Number
SBAS367B
SBAS373A
SN74LVC2G157
SBOS410
SBVS046C
SBOS099C
ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK
SBAU134A – August 2008 – Revised May 2009
ADS1274EVM-PDK
Device
Literature Number
OPA1632
SBOS286A
SCES207K
TPS73018
SBVS054H
TPS65131
SLVS493B
PCA9535
SCPS129H
User's Guide
1
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Table of Contents
Related Manuals for Texas Instruments ADS1174EVM
Summary of Contents for Texas Instruments ADS1174EVM
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Page 1: Ads1274Evm (Left) And Ads1274Evm-Pdk (Right)
ADS1274EVM-PDK Figure 1. ADS1274EVM (Left) and ADS1274EVM-PDK (Right) This user's guide describes the characteristics, operation, and use of the ADS1174EVM and ADS1274EVM, both by themselves and as part of the ADS1174EVM-PDK or ADS1274EVM-PDK. These evaluation modules (EVMs) are evaluation boards for the ADS1274, a 24-bit multi-channel, delta-sigma analog-to-digital converter (ADC), and the ADS1174, a 16-bit version of the ADS1274. -
Page 2: Table Of Contents
J5: Serial Interface Pins ..................J3 Configuration: Power-Supply Input ......................J15 +10V Selection ......................J16 –10V Selection ......................List of Switches ..................Operating Modes: Clock Frequency ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 3: Evm Overview
• Complete control of board settings • Easily expandable with new analysis plug-in tools from Texas Instruments For use with a computer, the ADS1174EVM-PDK or ADS1274EVM-PDK is available. This kit combines the ADS1174EVM/ADS1274EVM board with the DSP-based MMB0 motherboard, and includes ADCPro™... -
Page 4: Analog Interface
J5.4 DGND DGND In/Out None Digital Ground J5.5 CLKR CLKR None SCLK clock J5.6 GPIO1 MODE1 High J5.7 /DRDY/FSYNC In/Out J5.8 GPIO2 FORMAT0 High ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 5: Connector J2
All the data output signals (DOUT1 to DOUT4) can be monitored on J2. Figure 2 illustrates the pinout for J2. Figure 2. Connector J2 SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 6: Power Supplies
Select the external +VA voltage Table 5. J16 –10V Selection Jumper Name Function –10V Select the –10V that is generated on the –VA Select the external –VA voltage ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 7: Voltage Reference
J1. Figure 5 shows switch S1 as it appears on the EVM. Figure 4. Connector J1 Figure 5. Switch S1 SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 8: Power-Down, Mode And Format Control
• Jumper J19 can be used to always select the 27MHz crystal (IOVDD position) or allow the onboard/external clock selection to be controlled by GPIO5 (J5.19) as shown in Figure ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 9: Evm Operation
Terminal Block (TBK) or towards the ADS1274 to select the Amplifier (AMP) for the analog inputs 1 through 4 as shown in Figure Figure 7. Amplifier Selection Switches SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... - Page 10 5-6KINTERFACE HPA-MCUINTERFACE boards available from Texas Instruments, or the MMB0 if purchased as part of the ADS1274EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the ADS1274, see the relevant product folder on the TI web site. Some of the digital signals are controlled directly with pins on J5.
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Page 11: Ads1274Evm Default Jumper Locations
Switch Default Position Switch Description Left Onboard Reference S2–S4 Left 2–4 Terminal Block (amplifiers bypassed) Down 1 Terminal Block (amplifiers bypassed) Right Frame-sync format SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 12: Ads1274Evm-Pdk Kit Operation
The software should now be installed, but the USB drivers may not yet have been loaded by the PC operating system. This step will complete when the ADCPro software is executed; see Section 9.4, Running the Software and Completing Driver Installation. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 13: Mmb0 Initial Setup
If the PDK will be powered from an AC adapter, connect J12. If the PDK will be powered through the terminal block, disconnect J12. (See Section 9.3 for details on connecting the power supply.) Figure 9. MMB0 Initial Setup SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 14: Connecting Ads1274Evm To Mmb0
EVM). Note that the default configuration for the EVM is to use external ±10V supplies for the input amplifiers. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 15: Connecting An Ac Adapter
The MMB0 is a Modular EVM System motherboard. It is designed around the TMS320VC5507 , a DSP with an onboard USB interface from Texas Instruments. The MMB0 also has 16MB of SDRAM installed. The MMB0 is not sold as a DSP development board, and it is not available separately. TI cannot offer support for the MMB0 except as part of an EVM kit. -
Page 16: Laboratory Power-Supply Connection
Make sure the ADCPro software and device plug-in software are installed from the CD-ROM as described in Section 9.1. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 17: Ni-Visa Driver Installation
13, it is not necessary to search for the software; it has already been installed to your PC. • For the remaining steps, accept the default settings. Figure 13. NI-VISA Driver Installation SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 18: Ni-Visa Driver Installation Question
ADS1274EVM-PDK Kit Operation www.ti.com Figure 14. NI-VISA Driver Installation Question Figure 15. NI-VISA Driver Installing ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 19: Ni-Visa Driver Complete Installation
This should complete the installation of the NI-VISA drivers. You can verify proper installation by opening the Device Manager and locating as shown in Figure Figure 17. NI-VISA Driver Verification Using Device Manager SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 20: Adcpro Software Start-Up Display Window
Figure 18. ADCPro Software Start-up Display Window Step 2. Select ADS1274EVM from the EVM drop-down menu. The ADS1274EVM-PDK plug-in appears in the left pane, as shown in Figure ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 21: Ads1274Evm-Pdk Plug-In Display Window
During the driver installation, a message may appear indicating the firmware load has TIMED OUT. Click OK and continue driver installation. The plug-in will attempt to download the firmware again once the driver installation completes. SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 22: Install New Driver Wizard Screen 1
ADS1274EVM-PDK Kit Operation www.ti.com Figure 20. Install New Driver Wizard Screen 1 Figure 21. Install New Driver Wizard Screen 2 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 23: Install New Driver Wizard Screen
ADS1274EVM-PDK Kit Operation www.ti.com Figure 22. Install New Driver Wizard Screen 3 Figure 23. Install New Driver Wizard Screen 4 SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 24: Evaluating Performance With The Adcpro Software
To load a test plug-in, select it from the Test menu. To unload a plug-in, select the Unload option from the corresponding menu. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 25: Channel Enable
In addition, the Manual Control button (shown in Figure 27) can be used to enable or disable all the channels. Figure 27. Manual Channel Control SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 26: Clock Settings And Mode
Figure 28. Clock Settings and Mode The Operating Mode control (illustrated in Figure 29) can select from High-Speed, High-Resolution, Low-Power, or Low-Speed. Figure 29. Operating Mode ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A – August 2008 – Revised May 2009 Submit Documentation Feedback... -
Page 27: Output Data Format
If ADCPro stops responding while the ADS1274EVM-PDK is connected, try unplugging the power supply from the PDK. Unload and reload the plug-in before reapplying power to the PDK. SBAU134A – August 2008 – Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback... -
Page 28: Schematics And Layout
Schematics and Layout www.ti.com Schematics and Layout Schematics for the ADS1174EVM and ADS1274EVM are appended to this user's guide. The bill of materials is provided in Table 11.1 Bill of Materials Note: All components should be compliant with the European Union Restriction on Use of Hazardous Substances (RoHS) Directive. - Page 29 Schematics and Layout www.ti.com Table 8. ADS1174EVM/ADS1274EVM Bill of Materials (continued) Item Value Ref Des Description Vendor Part Number 0.15 µF Capacitor, X7R Ceramic 0.15 µF C1608X7R1E154KT ±10%, 25WV, Size = 0603 0.22 µF Capacitor, X7R Ceramic 0.22 µF C1608X7R1C224KT ±10%, 16WV, Size = 0603...
- Page 30 Schematics and Layout www.ti.com Table 8. ADS1174EVM/ADS1274EVM Bill of Materials (continued) Item Value Ref Des Description Vendor Part Number ADS1274EVM or ADS1174EVM Texas 6492532 or 6496219 Instruments D1, D2 Schottky Diode, 20V, 1A MBRM120LT1G Semiconductor J10-J14 Bus Wire (18-22 Gauge) Inductor, 4.7 µH, 1.8 A, 6x6mm,...
- Page 31 SEMICONDUCTOR GROUP PGND EPC_B82462-G4472-M 10 nF 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA AGND PGND 4.7 nF TITLE ENGINEER RUSSELL ANDERSON ADS1174EVM 0.1uF TPS65131RGE DRAWN BY RUSSELL ANDERSON 6496220 DOCUMENT CONTROL NO. SIZE DATE 29 AUG 2008 SHEET FILE...
- Page 32 J9A (TOP) = SAM_TSM-110-01-L-DV-P J9B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K DATA ACQUISITION PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE ENGINEER RUSSELL ANDERSON ADS1174EVM DRAWN BY RUSSELL ANDERSON DOCUMENT CONTROL NO. 6496220 SIZE DATE 29 AUG 2008 SHEET...
- Page 39 REVISION HISTORY ENGINEERING CHANGE NUMBER APPROVED REFP AVDD 150nF 10uF AVDD REFN REF3125AIDBZ PCA9535RGE SW-DPDT IOVDD 0.47uF 0.1uF IOVDD AVDD 0.1uF IOVDD 0.1uF DIPSWITCH-6 OPA2350 100K DIPSWITCH-4 TP11 100uF JPR-1X3 0.1uF 100K AVDD IOVDD VOUT 100K TEMP TRIM 10uF REF5025 ADS1274IPAP SYNC CNTL...
- Page 40 REVISION HISTORY ENGINEERING CHANGE NUMBER APPROVED R4 1K +10V 1.5nF C0G 0.1uF CHAN-P4 49.9 ANP4 VOCM CHAN-N4 49.9 ANN4 SW-DPDT OPA1632 R8 1K VCOM 0.1uF 0.1uF -10V +10V 1.5nF C0G 1.5nF C0G 0.1uF 49.9 CHAN-P3 ANP3 VOCM 49.9 CHAN-N3 OPA1632 ANN3 SW-DPDT 0.1uF...
- Page 47 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 48 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.
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