Texas Instruments ADS1x9xECG-FE User Manual
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Texas Instruments ADS1x9xECG-FE User Manual

Texas Instruments ADS1x9xECG-FE User Manual

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ADS1x9xECG-FE Demonstration Kit
User's Guide
Literature Number: SLAU384A
December 2011 – Revised April 2012

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Summary of Contents for Texas Instruments ADS1x9xECG-FE

  • Page 1 ADS1x9xECG-FE Demonstration Kit User's Guide Literature Number: SLAU384A December 2011 – Revised April 2012...
  • Page 2 Appendix B ADS1x9x EVM Bill of Materials (BOM) ..................Appendix C PCB Layout and Schematics ......................PCB Layout ......................Schematics Table of Contents SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 3: Table Of Contents

    PC Application Firmware Upgrade - 2 .................. PC Application Firmware Upgrade - 3 ................... DB9 ECG Connector Pin Outs ................... USB Mini Connector Pin Outs SLAU384A – December 2011 – Revised April 2012 List of Figures Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 4 ....................... ECG Cable Drawing ..................... Top Layer Placement ....................Bottom Layer Placement List of Figures SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 5: Ads1X9Xecg-Fe Demonstration Kit

    SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit This user's guide describes the characteristics, operation, and use of the ADS1x9xECG-FE. This demonstration kit models the ADS1192, ADS1292 and ADS1292R. The family of devices are two-channel, 16/24-bit, low-power, integrated analog front-end (AFE) designed for portable electrocardiogram (ECG) and respiration applications.
  • Page 6 The MSP430 firmware and PC application are designed to automatically detect the installed part and configure to accommodate the part. Throughout this document, the term demonstration kit is synonymous with the ADS1x9xECG-FE. Features Supported in this Version 1.
  • Page 7 DB9 ECG Cable Installing the Software (PC application) Before installing the software, make sure the ADS1x9xECG-FE is NOT connected to the PC. If using a machine with Windows 7, we recommend having administrator rights to avoid problems during installation. Unzip the installer file, and then find and double click setup.exe to install the software. Unless otherwise specified during the install process, the software installs at C:\Program Files\Texas Instruments\ADS1x9xEVM.

  • Page 8: Pc Application Installation Screen

    Figure 2. PC Application Installation Screen 1 Accept the License Agreement and click “Next”. Figure 3. PC Application Installation Screen 2 ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 9: Pc Application Installation Screen

    The LabVIEW application software is installed now. Click “Next” to install the Microsoft C++ 2008 Redistributable Package (x86). Figure 5. PC Application Installation Screen 4 SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 10: Pc Application Installation Screen

    Figure 6. PC Application Installation Screen 5 Click “Finish” to complete the installation procedure. Figure 7. PC Application Installation Screen 6 ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 11: Pc Application Installation Screen

    Figure 8. PC Application Installation Screen 7 Accept the license terms and click “Install”. Figure 9. PC Application Installation Screen 8 SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 12: Pc Application Installation Screen

    The following steps will ensure proper installation of the USB drivers. 1. Plug-in USB to mini USB cable to P1 of ADS1x9xECG-FE and the other end to the USB port on the 2. The operating system will prompt for USB driver for the “ADS1x9x - ECG Recorder” device. When the wizard comes up, select the options “No, not this time”...

  • Page 13: Hardware Wizard Screen

    “MSP430-CDC.inf” file is located (C:\Program Files\Texas Instruments\ADS1x9xevm\USB Drivers). This file will be copied to the directory while installing the PC application. SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 14 Software Installation www.ti.com Click “Next” Figure 14. Hardware Wizard Screen 3 Figure 15. Hardware Wizard Screen 4 ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 15 For the following warning message click on “Continue Anyway” Figure 16. Hardware Wizard Screen 5 Click on Finish Figure 17. Hardware Wizard Screen 6 SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 16: Device Manager Screen

    If the connection to the ADS1x9xECG-FE board is not established, then the program will prompt the user to check the connection between the PC and ADS1x9xECG-FE and retry.

  • Page 17: Register Configuration - Channel Registers

    Running the Software www.ti.com Overview of the Features This section provides a quick overview of the various features and functions of the ADS1x9xECG-FE software package. The main tabs consist of: • About • ADC Register - Allows the user to configure all the ADS1x9x user registers •...

  • Page 18: Register Configuration - Loff And Rld

    Figure 21. Register Configuration – LOFF and RLD The GPIO Registers tab consists of the GPIO settings. Figure 22. Register Configuration – GPIO ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 19: Register Configuration - Respiration Registers

    Figure 23. Register Configuration – Respiration Registers The Registers Map tab reads back the register bit values from the ADS1x9xECG-FE. The Refresh Registers button provided in this tab read back the register values from the ADS1x9xECG-FE at any time. Figure 24. Register Configuration – Register Map SLAU384A –...

  • Page 20: Pc Application Analysis - Scope

    GUI. The Scope Analysis button activates a pop-up that displays the mean voltage, root mean square (RMS) voltage and peak to peak voltage for noise analysis. Figure 25. PC Application Analysis – SCOPE ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 21: Pc Application Analysis - Histogram

    • Nyquist select “Optional Plane” • Nichols menu item) • S Plane • Z Plane SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 22: Pc Application Analysis - Fft

    Coherent Frequency Calculator Provision for entering desired Ain Frequency Section User Defined Dynamic Range Provision for selecting Low and High frequency Section ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 23: Pc Application Analysis - Ecg

    Lead aVF for the ADS1192 and ADS1292. The ADS1292R only displays Lead I or Respiration data. Figure 28. PC Application Analysis – ECG Figure 29. PC Application Analysis – ADS1292R Respiration (Low Pass Filter Enabled) SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 24: Pc Application Save

    The Save tab provides provisions to save the analysis or data to a file. By default, the data is saved to C:\Program Files\Texas Instruments\ADS1x9xevm\saved. Use the Directory to Save Files option to select the folder where data is to be saved. In the pop up window, navigate to the folder where the file is to be saved and select Use Current Folder.

  • Page 25: Pc Application Live Ecg For Ads1292R

    Live ECG and respiration data are shown on the Live ECG/RESP Display tab. This tab also shows the heart rate, respiration rate and lead-off information. Figure 31. PC Application Live ECG for ADS1292R SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 26: Pc Application Live Respiration Channel

    Plot legend gives various option to change the color of the plot, various plotting styles, etc. (Right-click on the plot legend) The Lead-off Status is interpreted as shown in the table below. ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 27 • 8Gb NAND Flash support The ADS1x9xECG-FE can be used as a demo board for standard six lead ECG and respiration channel using four electrode inputs. Defibrillator protection and patient protection circuitry are not provided on the ADS1x9xECG-FE board. The printed circuit board (PCB) and schematic are shown in Appendix MSP430F5529 (U7) is the micro-controller used on the board.
  • Page 28 TP16 Analog Inputs The ADS1x9xECG-FE gives the user the option to feed in the standard ECG/Respiration signals from a patient simulator to the DB9 connector (P5). The output from any typical patient simulator can be directly fed into the DB9 connector. For all...

  • Page 29: Simulator Connection

    Figure 33. Simulator Connection USB Interface The ADS1x9xECG-FE has a mini USB interface for PC application connectivity requiring a standard mini USB to USB cable for connection. ADS1x9xECG-FE is designed to work in the slave mode. Onboard Key Interface The ADS1x9xECG-FE board has four switches.

  • Page 30: Switch Positions

    The demonstration kit has two LEDs to indicate various operating states. The flashing green LED (D2) indicates the ADS1x9xECG-FE is in the idle state and steady blue LED (D1) indicates the micro-controller is busy in servicing requests from the PC application.

  • Page 31: Firmware Architecture

    The data is stored in the onboard flash memory and later sent to the PC application in individual packets. Each packet contains 8 samples which are 24bits in length. SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 32: Evaluation Mode Data Flow For Ads1292R

    The system data flow diagram for live data stream mode is given in Figure ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 33: Live Data Stream Mode Data Flow For Ads1292R

    16-bit and then provided to the FIR filter. The frequency response for the IIR filter is shown in Figure SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 34: Frequency Response For The Iir Filter

    The frequency response of the filter with a 50 Hz notch is shown in Figure Figure 40, and Figure Figure 39. Frequency Response for the MBF Filter (Full View) ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 35: Frequency Response For The Mbf Filter (50Hz Notch)

    40 Hz. This filter provides a sharp cut-off at 40 Hz with attenuation of 30 dB at the stop band. The frequency response for the filter is shown in Figure Figure 42. Frequency Response for the Band Pass Filter SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 36 9. Heart rate is calculated using the below formula HR per Minute = (60 * Sampling Rate)/ (Average RR interval for 5 consecutive RR intervals ) 10. Threshold also gets recalculated from the QRS peak values detected. ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 37: Pc Application Firmware Upgrade

    16bits in width. USB-Based Firmware Upgrade The firmware on the ADS1x9xECG-FE can be changed from the PC application by selecting the Firmware Upgrade option on the PC application. At the end of the firmware upgrade, the system issues a reset command and will reload with new firmware.

  • Page 38: Pc Application Firmware Upgrade

    4. Device will reset and come up with new firmware with itself. Connector Interface The following connectors used for external interface to ADS1x9x ECG recorder board. • • USB mini connector ADS1x9xECG-FE Demonstration Kit SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...

  • Page 39: Db9 Ecg Connector Pin Outs

    USB Mini Connector Figure 47. USB Mini Connector Pin Outs Signal Description VBUS USB power 5 V D– USB DM USB DP SLAU384A – December 2011 – Revised April 2012 ADS1x9xECG-FE Demonstration Kit Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 40 Shield Shield Figure 48. ECG Cable Drawing The ECG cable can be ordered through http://www.biometriccables.com/ using the part number N26082011. ECG Cable Details SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 41 Appendix B ADS1x9x EVM Bill of Materials (BOM) The following pages show the bill of materials table, landscaped for readability. SLAU384A – December 2011 – Revised April 2012 ADS1x9x EVM Bill of Materials (BOM) Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 42 LED 565NM GRN DIFF 0603 SMD Lumex SML-LX0603GW-TR DIODE SCHOTTKY 400MW 20V SOD123 Diodes Inc SD103CW-13-F Not Installed L1, L2 Not Installed ADS1x9x EVM Bill of Materials (BOM) SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 43 R100, R102, R105, R106, R109, R110, R113 R35, R117 RES 100K OHM 1/10W 5% 0402 SMD Panasonic ERJ-2GEJ104X SLAU384A – December 2011 – Revised April 2012 ADS1x9x EVM Bill of Materials (BOM) Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 44 3V Low-Dropout Regulator Texas Instruments TPS73201DBVT Not Installed Not Installed Not Installed 8Gb NAND Flash Micron MT29F8G08ABABAWP:B Not Installed ADS1x9x EVM Bill of Materials (BOM) SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 45 Power Stream GM065080 Battery Cable 22 AWG red color cable Battery Cable 22 AWG black color cable SLAU384A – December 2011 – Revised April 2012 ADS1x9x EVM Bill of Materials (BOM) Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 46 Appendix C PCB Layout and Schematics PCB Layout The following pages show the PCB layout, landscaped for readability. PCB Layout and Schematics SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 47 PCB Layout www.ti.com Figure 49. Top Layer Placement SLAU384A – December 2011 – Revised April 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 48 PCB Layout www.ti.com Figure 50. Bottom Layer Placement PCB Layout and Schematics SLAU384A – December 2011 – Revised April 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 49 Schematics www.ti.com Schematics The schematics are appended to the end of this data sheet. SLAU384A – December 2011 – Revised April 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated...
  • Page 50 Power To PC Battery Module Application Power Data Module 1.ADS1292R - 24 bit 2 Ch -- 1 Ch ECG -- 1 Ch Respiration UART 2.ADS1292 - 24 bit 2 Ch -- 2 Ch ECG 3.ADS1192 - 16 bit 2 Ch JTAG -- 2 Ch ECG GPIO...
  • Page 51 ADS_AVDD Place the decoupling capacitors close to power pins in layout ADS_DVDD ECG_SHD_DRV 100K 0.1uF 0.1uF ADS_DVDD 1.5nF AVSS R32 10K ADC_GPIO2 ADC_GPIO1 R34 10K R117 100K ADC_CS START ADC_START ADC_DIN ADC_SCLK SCLK DOUT ADC_DOUT 482016042 IN2P DRDY# ADC_DRDY ADC_RESET IN2N PWDN#/RESET# ADC_CLK...
  • Page 52 ADS_AVDD VCC_BAT 3.3uH 10uF 46.4K 10uF 2.2uF 10uF 0.1uF NR/FB AVSS TPS73201 30.9K 0.01uF AVSS Title ADS1292 Power Supply Size Document Number ADS1x9xECG FE Date: Thursday, August 04, 2011 Sheet...
  • Page 53 VCC_3_3 SD CARD R107 R101 10uF 0.1uF 0.1uF VCC_3_3 R110 FLASH_CE I/O0 FLASH_IO0 R106 FLASH_CE2 CE2# I/O1 FLASH_IO1 R105 FLASH_CLE I/O2 FLASH_IO2 FLASH_ALE I/O3 FLASH_IO3 FLASH_WE FLASH_IO4 I/O4 R109 FLASH_RE I/O5 FLASH_IO5 R100 FLASH_RB R/B# I/O6 FLASH_IO6 R102 FLASH_RB2 R/B2# I/O7 FLASH_IO7 NC19 NC20...
  • Page 54 MSP_DVDD XT2IN XT2OUT VCCA VCCB SBWTCLK 10pF ABM3B-24.000MHZ SBWTDIO 10pF SBWTCLK XT2OUT TXS0102DCTR XT2IN 0.1uF 851-93-006-20-001000 VUSB SBWTDIO VBUS USB_DM FLASH_IO0 10uF 0.1uF 220nF FLASH_IO1 USB_DP FLASH_IO2 FLASH_IO3 SYS_RESET 220nF C83 NI MSP_AVDD MSP_DVDD MMBT5089LT1G AVCC1 10uF 0.1uF AVSS1 FLASH_IO4 P6_4/CB4/A4 BT_RX FLASH_IO5...
  • Page 55 Battery Fuel Gauge PACK_P BAT_P BAT_M R103 3.3V Power Supply GPIO VCC_BAT VCC_3_3 BAT_SCL TP13 0.1uF 2.2uF TPS73033 0.01uF BAT_SDA TP22 VCC_3_3 3.3V Voltage Supervisor Battery Management VCC_BAT 0.1uF R104 4.7K OUT3 RESET# OUT2 R112 R115 OUT1 0.1uF RESET SYS_RESET 100E VBUS KT11P2SM34LFS...
  • Page 56 VCC_3_3 ANT1 PAN_TX HCI_TX PAN_RX HCI_RX PAN_RTS HCI_RTS PAN_CTS HCI_CTS VCC_1_8 BT_CS1 SPI_SCLK SCLK SPI_SIMO AUD_FSYNC MOSI VDCOUP1 AUD_CLK VDD_IO SPI_SOMI MISO/GDO1 VDCOUP2 AUD_IN GDO2 AUD_OUT GDO2 TP44 GDO0 VCC_3_3 I2C_SCL I2C_SDA CL1_5_LDO_IN DNC1 MLDO_IN DNC2 MLDO_OUT DNC3 SLOW_CLK SLOW_CLK_IN DNC4 DNC5 DNC6...
  • Page 57 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 58 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 59 Authorized Distribution Brand： Website： Welcome to visit www.ameya360.com Contact Us： Address： 401 Building No.5, JiuGe Business Center, Lane 2301, Yishan Rd Minhang District, Shanghai , China Sales： Direct +86 (21) 6401-6692 Email amall@ameya360.com 800077892 Skype ameyasales1 ameyasales2 Customer Service： Email service@ameya360.com Partnership：...

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