Manufacturer Part NumberPGA309EVM-US
ManufacturerTexas Instruments
PGA309EVM-US datasheet

Specifications of PGA309EVM-US

Main PurposeInterface, Sensor Signal ConditionerUtilized Ic / PartPGA309-US
Lead Free Status / RoHS StatusContains lead / RoHS non-compliantSecondary Attributes-
Embedded-Primary Attributes-
Other names296-18516
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PGA309EVM – Designer’s Kit for PGA309
PGA309 Hardware Designer’s Kit
o Evaluate PGA309 + User’s Sensor
o Full Temperature Evaluation
Software Control for Designer’s Kit
o Program PGA309 for Evaluation
o Program PGA309 + User’s Sensor in Final Module
o Computation Analysis Tool for Calibration of PGA309 + Sensor
User’s Guide
SLOR087D – February 2004 – Revised January 2006
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PGA309EVM-US Summary of contents

  • Page 1

    ... PGA309EVM – Designer’s Kit for PGA309 COMPLETE EVALUATION TOOL FOR PGA309 PGA309 Hardware Designer’s Kit o Evaluate PGA309 + User’s Sensor o Full Temperature Evaluation Software Control for Designer’s Kit o Program PGA309 for Evaluation o Program PGA309 + User’s Sensor in Final Module ...

  • Page 2

    ... PGA309EVM Designer’s Kit since the PGA309 features and modes are not described herein. Refer to Texas Instruments’ Website for latest revision of: PGA309 Data Sheet and PGA309 User's Guide PGA309EVM User's Guide and PGA309EVM Software Pages 3-5 5-6 6-7 ...

  • Page 3

    ... PGA309 PC Interface Board PGA309 Sensor Interface Board PC Cable (8-position RJ45 Plug to 9-position female DB9) AC Wall Adapter – (PGA309EVM-US Only à USA & Canada Shipments Only) 120Vac RMS, 60Hz in; 6Vdc, 200mA out PGA309EVM Software CDROM (Rev 1.1.2 or newer) PGA309 Designer’s Kit Board Control Software PGA309 Calibration Spreadsheet for Microsoft® ...

  • Page 4

    In addition you will need to allow Macros to run in Excel. . Click on “Tools” and then click on “Options”. Next select the tab in the “Options” pop-up window. Click on the “Security” tab. Page ...

  • Page 5

    Click on the “Macro Security” button. Page ...

  • Page 6

    ... PGA309 Sensor Interface Board, both One-Wire and Two-Wire interface configuration and control logic, and an A/D Converter (ADS1100). The PGA309EVM is designed to allow the user to attach his sensor to the PGA309 Sensor Interface Board and place this combination in a temperature chamber. By controlling the applied pressure to the pressure sensor and the temperature of the temperature chamber, the PGA309 + Sensor combination can be calibrated for optimum end module accuracy. The PGA309 Sensor Interface Board is rated for operation from -40° ...

  • Page 7

    ... PGA309 Sensor Interface Board inside a temperature chamber for PGA309 + Sensor calibration. In parallel with Tio is Jtest which provides a means for direct plug-in connection to the PGA309 PC Interface Board. This is useful for initial checkout of the PGA309EVM system. 3.2 Jumper Configuration J1, J2, J3, J4, J5, J10 and J11 allow flexibility in the configuration of the connection to a bridge sensor. These jumpers also allow connection of the on-board test resistor R without any bridge sensor connected ...

  • Page 8

    ... PGA309 + Sensor calibration. In parallel with Tio is Ptest which provides a means for direct plug-in connection to the PGA309 Sensor Interface Board. This is useful for initial checkout of the PGA309EVM system. Ppc is an 8-position RJ45 jack for connection through the PGA309EVM PC cable to a test computer’s RS-232 serial port. RS-232 compatible signals are generated through U9. Power for the PGA309 PC Interface Board is provided through either Jpwr or Tpwr. Jpwr used when an AC Wall Adapter (120Vac RMS, 60Hz in ...

  • Page 9

    ... Note recommended to keep One-Wire interface on the PGA309 PC Interface Board connected to the PGA309 Sensor Interface Board even when using Two-Wire communication mode to the PGA309 and EEPROM from the PGA309EVM Board Software. See Section 7.8 for details. 4.5 ADS1100 (On-Board A/D Converter) The ADS1100 is a 16-Bit A/D available to measure Vout from the PGA309. The ADS1100 is configurable through the Board Control Software ...

  • Page 10

    Parameter Typical VPU 3.0V VHI 2.63V VLO 122mV t 5μs PU Figure 2: One-Wire Active Pull-Up Waveform and Typical Levels (V 5.2 V Quick Discharge desired at times to cycle the power on the PGA309 to be ...

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    Page ...

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    ... R13 JF 10k Data In SDN Page Jpwr OUT OUT IN ZHCS500A 15.8k 6 Tpwr C19 ADJ GND EN 200mA - R9 R12 18.2k 4.7k REG101UA-A C13 R10 SO-8 0.1 F 11.5k SN74LVC1G07 SCL CC OUT NC C15 SDA 0.01 F OUT 5 SN74LVC1G07 2 SDA OUT Texas Instruments 0.22 F MAX3238 6Vdc 200mA 6Vdc ...

  • Page 13

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  • Page 14

    Initial Setup and Checkout 6.1 PGA309 Sensor Interface Board – Factory Jumper Settings Confirm and/or set the jumpers on the PGA309 Sensor Interface Board as shown in Figure 3. The desired jumper settings are also described in Table 1. ...

  • Page 15

    PGA309 PC Interface Board – Factory Jumper Settings Confirm and/or set the jumpers on the PGA309 PC Interface Board as shown in Figure 4. The desired jumper settings are also described in Table 2. Figure 4: PGA309 PC Interface ...

  • Page 16

    ... Plug the PGA309 Sensor Interface Board into the PGA309 PC Interface Board. On the PGA309 PC Interface Board connect a 6Vdc (6Vdc-9Vdc) Lab Supply into Tpwr Wall Adapter (120Vac RMS, 60Hz in; 6Vdc, 200mA out - USA Shipments Only) into Jpwr. Connect the PGA309EVM PC Cable from Ppc (RJ-45 jack) on the PGA309 PC Interface Board to an RS-232 serial port on the Test Computer. ...

  • Page 17

    ... Software Startup Start the PGA309EVM Board Control Software by clicking on “PGA309 DK Board Interface” under the “Start” menu, “All Programs”, “PGA309 Designer’s Kit” as shown in Figure 6. Figure 6: PGA309EVM Board Control Software Startup Page ...

  • Page 18

    Software Board Communication Setup – Default On initial software startup a Main Window will appear with a smaller pop-up window in the middle of the Main Window. Click “Yes” on the pop-up window (see Figure 7). If the initial ...

  • Page 19

    The First Pop-Up Window will disappear and the Main Window should look as in Figure does then proceed to Section 6.5.4 and skip Section 6.5.3. Figure 8: Software Startup – Main Window Page ...

  • Page 20

    Software Board Communication Setup – Manual COM Port Setup If on initial software startup the right Com port is not selected automatically then the first screen will look like Figure 9. If you are getting a different error, your ...

  • Page 21

    Another pop-up window will appear as shown in Figure 11. Click “Yes” and the two pop-up windows should disappear with only the Main Window remaining as in Figure 8. Figure 11: Communication Pop-up Window after COM Port Setup 6.5.4 Hardware ...

  • Page 22

    ... Select “PGA309_DK_Test.txt” and open this file (located in the PGA309EVM Software directory – typically C:\Program Files\PGA309 Designer's Kit). A pop-up window will appear as in Figure 13. Click on “OK”. Figure 13: Open File Acknowledge Pop-up Window The Main window will appear as in Figure 14. ...

  • Page 23

    ... Internal Comparators Temperature ADC Internal Mode Output Enable Counter Set to all zeroes EEPROM Temperature Coefficients Table 3: PGA309EVM Sensor Interface Board Functional Test Settings Equations for Table (Front End PGA Gain)(Gain DAC)(Output Amplifier Gain) + OUT DIFF Coarse Offset (Front End PGA Gain)(Gain DAC)(Output Amplifier Gain) + ...

  • Page 24

    Schematic for PGA309 Configuration in Table3: 3) Write these settings to the PGA309 Sensor Interface Board EEPROM by clicking on “Write EEPROM” in the Main Window. Click on “Read EEPROM” and then click on “Read PGA309”. The Main Window should ...

  • Page 25

    Figure 15: Status Window 5) In the Status Window check the box to “Read ADS1100 Continuously” the Main Window set “Supply Vcc (V)” to 5.0V 7) The “Rtest” potentiometer and “J4” on the PGA309 Sensor Interface Board will ...

  • Page 26

    ... Figure 16: Internal Temperature Reading If all steps above, in Section 6, have been successfully completed then the PGA309 Sensor Interface Board, PGA309 PC Interface Board, PC Cable, PGA309EVM Board Control Software are all operating correctly. 7.0 Board Control Software Overview Figure 17 depicts the Main Window for the Board Control Software. Subsections of the Main Window (outlined by dashed lines) as well as the “ ...

  • Page 27

    ... Save File Selects File to save current EEPROM Configuration Register and Lookup Table values. Detect Looks for PGA309EVM Boards using current “Port Setup”. Configures the board and read the current Register and the Lookup Table values Write PGA309 Writes all current Main Window values into PGA309 R/W Registers (including setting ZeroDAC and GainDAC) ...

  • Page 28

    Figure 18: Typical Write PGA309 or Read PGA309 Pop-up Window 7.2 EEPROM Lookup Table When the “EEPROM Lookup Table” is selected on the bottom Tab in the Main Window the Temperature Coefficients stored in the PGA309 external EEPROM from the ...

  • Page 29

    Figure 20: PGA309 Internal Registers to PGA309 External EEPROM Mapping For updating the information in the “EEPROM Lookup Table” section simple click and edit the desired values. Next click on the “Apply Changes” button in the “EEPROM Lookup Table” section. ...

  • Page 30

    Figure 21: PGA309 Registers – Main Window 7.4 PGA Settings Rather than toggling individual bits of the registers described above, the PGA309 can be configured using drop-down menu selections or check-boxes in the “PGA Settings” section of the Main Window ...

  • Page 31

    Fault Detection In the “Fault Detection” section of the Main Window the following check-boxes are provided for fault detection configuration: Detect External Faults (checked means enable detection of external faults) Detect Internal Faults (checked means enable detection o internal ...

  • Page 32

    Interface Board and ADS1100 In the “Interface Board and ADS1100” section, in the Main Window, click on “Board Settings”. A pop-up window will appear as in Figure 23. This pop-up window provides configuration control of the ADS1100 and the ...

  • Page 33

    Logic Description State P7 0 PGA309 operates in “Normal / Stand- Test pin Alone Mode”. 1 PGA309 operates in “Test Mode” Turns on LED D2 on PGA309 PC nLED2 Interface Board. 1 Turns off LED D2 on PGA309 ...

  • Page 34

    Interface The “Interface” section in the Main Window allows for selection of One-Wire or Two-Wire digital communication with the PGA309 Sensor Interface Board. Refer to Figure 24. A single click in the respective circle will select the desired interface. ...

  • Page 35

    Board Communication Status The “Board Communication Status” section (see Figure 26) is located in the bottom left corner of the Main Window. When reads or write to the PGA309 internal registers or PGA309 external EEPROM are executed messages will ...

  • Page 36

    Figure 28: Three Wire Configuration One of the key considerations when using connecting a module in a three wire configuration is use of the test pin during calibration. The test pin is typically used during calibration to place the PGA309 ...

  • Page 37

    PGA309 Calculator (Software for Gain/Offset Calculation and Simulation) The PGA309 Calculator is a software program that helps to calculate initial gain and offset settings based on your sensor information. The tool also checks to see if the design violates ...

  • Page 38

    In cases where you want more control over gain and offset selection, you can force the Front End Gain and / or Coarse Offset to a fixed value using the “Set Additional Constraints”. The “Set Additional Constraints” feature can be ...

  • Page 39

    ... NOTE: Refer to Section 1.2 to ensure that your version of Excel is properly configured before using the PGA309 Calibration Spreadsheet for Microsoft® Excel. The PGA309EVM includes a Microsoft® Excel spreadsheet that provides a way to perform a calibration of the sensor module (PGA309 + sensor). The spreadsheet contains two parts: Sensor Curve-Fitting Equations Generation of Values for the PGA309 Temperature Lookup Table and Internal Register Settings ...

  • Page 40

    There are three degrees of freedom in this equation (offset and span vs. temperature and sensitivity vs. pressure), each of them is described with a quadratic equation don’t know much about the sensor (besides that it can be ...

  • Page 41

    ... The buttons have the following functions: A) “Load Registers From File” Read register values from a text file saved by PGA309EVM Board Control Program. B) “Load Registers From PGA309” Read configuration register values directly from the PGA309EVM Board Control Program (must be currently running) Using will update the gain, offset and reference values used for calibration ...

  • Page 42

    ... Vout reading or the last Temp ADC value from the Board Control Program. This saves the manual typing of the numbers. However, all the data can be also entered manually if the measurements are made with other equipment than the PGA309EVM PC Interface Board. Figure 35: Sensor Curvefit Worksheet ...

  • Page 43

    Upon completion of the measurements the fitted sensor function is displayed on two plots located on this worksheet (see Figure 36). Bridge sensitivity vs. temp 6.0E- 02 5.0E- 02 4.0E- 02 3.0E- 02 2.0E- 02 1.0E- 02 0.0E+ ...

  • Page 44

    ... A) Open the PGA309 Calibration Spreadsheet (click “Enable Macros” if asked). Upon opening you will be asked if you would like to open the “PGA309EVM Board Control Program”. Answer “Yes”. If you already have the software running, a new window will not be open, but a data link will be established ...

  • Page 45

    Figure 39: Select Calibration Algorithm Dialog Figure 40: Choose Temperature Calibration Method Page ...

  • Page 46

    F) Verify and correct the parameter values in the light-blue cells on the “Sensor Curvefit” Worksheet. (Figure 41). Note that the “ExtraGain” and “ExtraOffset” fields are used if an external amplifier is used to scale the output of the PGA309. ...

  • Page 47

    Place the Sensor + PGA309 at the temperature Tmeas2 and repeat the Steps entering the values to the corresponding cells below the ones shown in Figure 40. At each stage make sure the signal path of ...

  • Page 48

    ... Figure 44: Second Calibration for Improved Accuracy. 9.5 Customization of the PGA309EVM Calibration Spreadsheet All of the cells as well as the VBA code in the spreadsheet are open and can be modified and adjusted for individual design and sensor properties. The name of the custom sensor curve-fitting function is sensbridge(). ...

  • Page 49

    ... Upon initial receipt of the PGA309EVM, first perform the Initial Setup and Checkout as described in Section 6.0. If there is ever a doubt as to proper functioning of the PGA309EVM return to this configuration and use Section 6.0 to verify proper operation. Next configure the PGA309 Sensor Interface Board with your Sensor for evaluation ...

  • Page 50

    PGA309DK Two-Wire Interface and Long Leads Effect: When using the PGA309DK, with long leads between the “PGA309 PC Interface Board” and the “PGA309 Sensor Interface Board” for the Two-Wire Interface (SDA, SCL), while the PGA309 is operating in “Stand ...

  • Page 51

    Sensor Modules and One-Wire Interface (PRG): When using the PGA309 in a 4-Wire (V 47, there is an optimum way to deal with the PRG pin. For minimum component count you can put the required pull-up resistor, Rp, ...

  • Page 52

    Regional Settings Problem: On some European Computers when the PGA309DK Control Software is started an error is reported as illustrated in Figure 48. Figure 48: Run-time error from PGA309DK Software. Cause: This error [Runtime Error “13” – Type Mismatch ...

  • Page 53

    Figure 49: “Control Panel” Select Figure 50: “Control Panel” Page ...

  • Page 54

    Step Figure 50, select and click on “Regional and Language Options” in the “Control Panel” window. A new pop-up window, “Regional and Language Options” will appear as in Figure 51. Figure 51: “Regional and Language Options” pop-up ...

  • Page 55

    Step 5: In the “Language for non-Unicode Programs” section click on the drop-down menu arrow and select “English (United States)” as shown in Figure 53. If your computer is already configured for “English (United States)” as the “Language for non-Unicode ...

  • Page 56

    Step 7: In the “Regional and Language Options pop-up window click on the “Regional Options” tab as shown in Figure 55. Figure 55: “Regional and Language Options” pop-up window – “Regional Options” tab Step 8: Click on the “Customize” Tab ...

  • Page 57

    Step 6: In the “Customize Regional Options” pop-up window, as shown in Figure 56, under the “Decimal symbol” option select “.” from the drop-down menu as shown in Figure 57. Click on “OK” in the “Customize Regional Options” window which ...

  • Page 58

    Step 7: In the “Regional and Language Options” window Figure 58, click on “OK”. This will close all pop-windows and you will be back at the main “Control Panel” window on the desktop. Close this window by clicking ...

  • Page 59

    ... PGA309EVM PC Cable Drawing Page ...

  • Page 60

    ... PGA309EVM External EEPROM Settings for Functional Test 8-Bit EEPROM Load >>>>>>>>>>>>>>>>>>>>>> PGA309 External EEPROM - First Part (Configuration Data) External EEPROM PGA309 PGA309 Address Internal Register Internal Address (Decimal) Address Description ...

  • Page 61

    ... TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Please read the PGA309EVM User’s Manual and PGA309 Data Sheet and, specifically, the Warnings and Restrictions notices in the Manual and Data Sheet prior to handling the product. ...

  • Page 62

    ... 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. All products are sold subject to TI’ ...