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ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK,
This user's guide describes the characteristics, operation, and use of the ADS1146EVM and
ADS1246EVM, both by themselves and as part of the ADS1146EVM-PDK or ADS1246EVM-PDK. These
evaluation modules (EVMs) are evaluation boards for the ADS1246, a 24-bit delta-sigma analog-to-digital
converter (ADC), and the ADS1146, a 16-bit version of the ADS1246. The EVM allows evaluation of all
aspects of the ADS1146 or ADS1246 devices. Complete circuit descriptions, schematic diagrams, and a
bill of materials are included in this document.
The following related documents are available through the Texas Instruments web site at
http://www.ti.com.
SBAU149B – June 2009 – Revised May 2011
Submit Documentation Feedback
ADS1246EVM (Left) and ADS1246EVM-PDK (Right)
EVM-Compatible Device Data Sheets
Device
ADS1146
ADS1246
REF5020
OPA227
TPS3836L30
TPS79225
TPS72325
SN74LVC2G157
PCA9535
ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK
Copyright © 2009–2011, Texas Instruments Incorporated
SBAU149B – June 2009 – Revised May 2011
ADS1246EVM-PDK
Literature Number
SBAS453
SBAS426A
SBOS410C
SBOS110A
SLVS292D
SLVS337B
SLVS346B
SCES207K
SCPS129I
User's Guide
1
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Table of Contents
Related Manuals for Texas Instruments ADS1146EVM
Summary of Contents for Texas Instruments ADS1146EVM
- Page 1 ADS1246EVM-PDK ADS1246EVM (Left) and ADS1246EVM-PDK (Right) This user's guide describes the characteristics, operation, and use of the ADS1146EVM and ADS1246EVM, both by themselves and as part of the ADS1146EVM-PDK or ADS1246EVM-PDK. These evaluation modules (EVMs) are evaluation boards for the ADS1246, a 24-bit delta-sigma analog-to-digital converter (ADC), and the ADS1146, a 16-bit version of the ADS1246.
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Page 2: Table Of Contents
J3 Configuration: Power-Supply Input ..................J10 Configuration: Power Options ....................Reference Voltage Options ......................List of Switches ............... ADS1146EVM/ADS1246EVM Bill of Materials SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
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 ADS1146EVM-PDK or ADS1246EVM-PDK is available. This kit combines the ADS1146/ADS1246EVM board with the MSP430-based MMB3 motherboard, and includes ADCPro™ software for evaluation. -
Page 4: Analog Interface
In/Out None Digital ground J7.11 None ADS1246 SPI data in J7.12 GPIO3 PWRSEL High Selects ±2.5V or +5V supply SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 5: Power Supplies
All of the power supplies (AVDD, AVSS, and DVDD) have corresponding jumpers on J10 that can be replaced with a current meter to measure the respective supply currents. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 6: Voltage Reference
Center REF+ (J8.20) –2.5V Up to AVDD – AVSS – 1 Switch S1 should not be set to AVDD. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 7: Clock Source
5-6K Interface HPA-MCU Interface boards available from Texas Instruments, or the MMB3 if purchased as part of the ADS1246EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the ADS1246, see the relevant product folder on the TI web site. -
Page 8: Ads1246Evm-Pdk Kit Operation
Step 5. Connect the ADS1246EVM-PDK to the computer with a USB cable. Step 6. Run the ADCPro software. Each task is described in the subsequent sections of this document. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 9: Virtual Com Port Installer
Setup and follow the on-screen prompts. You may be notified that the driver is not digitally signed. If this message appears, select Continue Anyway and proceed. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 10: Mmb3 Switch Locations
Set switch SW4 to the right. • Set the DAC switch (SW5) to the OUT position (to the right). Figure 6. MMB3 Switch Locations SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 11: Connecting Ads1246Evm To Mmb3
Step 4. Set the jumpers and switches on the ADS1246EVM as shown in Figure 3 (note that these settings are the factory-configured settings for the EVM). SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 12: Mmb3 Block Diagram
MMB3 except as part of an EVM kit. For schematics or other information about the MMB3, contact Texas Instruments. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 13: Adcpro Software Start-Up Display Window
Step 1. Start the software by selecting ADCPro from the Windows Start menu. The screen in Figure 9 appears. Figure 9. ADCPro Software Start-Up Display Window SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 14: Ads1246Evm-Pdk Plug-In Display Window
You will see a series of messages in the status area indicating this action. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 15: Connection Timeout
MMB3. If the firmware must be loaded, you will see a screen similar to that shown in Figure Figure 12. Firmware Download Message Box SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 16: Firmware Download Progress Indicator
Follow the on-screen instructions and the plug-in should now connect to the EVM. Figure 14. Firmware Download Complete Message Box SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 17: Evaluating Performance With The Adcpro Software
The ADS1246EVM-PDK plug-in has a tabbed interface, with three different tabs to control the functions of the ADS1246. These tabs are described below. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 18: I/O Config Tab
ADS1246. The tab is divided into two sections: I/O Configuration and Supply Configuration. Figure 15. I/O Config Tab SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 19: Enabling Vbias On A Channel
ADS1246 device data sheet) as a reference for this signal. Figure 16. Enabling VBIAS on a Channel SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... - Page 20 The VREF value is set to 2.048V, with switch S1 set to BUFF. S1 should not be set to the AVDD position, in order to prevent the reference from exceeding the maximum specified input. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
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Page 21: Cal Tab
New fields, then press the Set button. You may read the values at any time by pressing the Read button. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 22: About Tab
The ID indicator shows the value of the ID [3:0] bits in the ADS1246 ID register. The Notes indicator may show relevant notes about the plug-in or firmware code, if there are any. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 23: Progress Bar While Collecting Data
For more information on testing analog-to-digital converters in general and using ADCPro and Test plug-ins, refer to the ADCPro User Guide. SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated... -
Page 24: Schematics And Layout
If ADCPro stops responding while the ADS1246EVM-PDK is connected, try unplugging the USB cable from the PDK. Unload and reload the plug-in before reapplying power to the PDK. Schematics and Layout Schematics for the ADS1146EVM and ADS1246EVM are appended to this user's guide. The bill of materials is provided in Table 10.1 Bill of Materials... - Page 25 Revision History www.ti.com Table 7. ADS1146EVM/ADS1246EVM Bill of Materials (continued) Item No. Value Ref Des Description Vendor Part Number 10kΩ Resistor, Thick Film Chip 10kΩ, Panasonic ERJ-3GEYJ103V 5%, 1/10W, Size = 0603 2kΩ Resistor, Thick Film Chip 2kΩ, Panasonic ERJ-3EKF2001V 1%, 1/16W, Size = 0603 47Ω...
- Page 26 J3A (TOP) = SAM_TSM-105-01-L-DV-P 10uF J3B (BOTTOM) = SAM_SSW-105-22-F-D-VS-K TPS72325DBV 0.1uF PRECISION ANALOG PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION 100K SEMICONDUCTOR GROUP 5411 EAST WILLIAMS BOULEVARD, TUCSON, AZ 85711 USA ADS1146EVM FRC_FDN337N TITLE FRC_FDN302P ENGINEER RICK DOWNS ADS1246EVM DRAWN BY BOB BENJAMIN DOCUMENT CONTROL NO.
- Page 27 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 28 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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