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LMP90100EB/NOPB

LMP90100EB/NOPB

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    Module

  • 描述:

    EVAL BOARD FOR LMP90100

  • 数据手册
  • 价格&库存
LMP90100EB/NOPB 数据手册
User’s Guide August 2012 LMP90100 EVB User’s Guide User’s Guide for the LMP90100 Evaluation Board with Sensor AFE Software Table of Contents 1.0. INTRODUCTION ........................................................................................................ 2 2.0. EQUIPMENT ............................................................................................................... 2 2.1. CONNECTION DIAGRAM .......................................................................................... 2 2.2. BOARD ASSEMBLY .................................................................................................... 4 3.0. EXAMPLE #1: QUICK START – DC READING ........................................................ 5 4.0. EXAMPLE #2: SHORTED INPUT AND CALIBRATION TEST ............................... 10 5.0. EXAMPLE #3 - 3-WIRE RTD APPLICATION .......................................................... 15 6.0. EXAMPLE #4: THERMOCOUPLE AND LM94022 APPLICATION ........................ 21 7.0. POWERING THE LMP90100EB ............................................................................... 31 8.0. EVALUATING THE LMP90100 WITHOUT THE SPIO-4 BOARD. ........................ 31 9.0. INSTALLING THE LMP90100 SENSOR AFE SOFTWARE ..................................... 32 10.0. SCHEMATIC ........................................................................................................... 36 11.0. LAYOUT .................................................................................................................. 37 12.0. BOM ......................................................................................................................... 39 August 2012 LMP90100EVB User’s Guide 1 1.0. Introduction The LMP90100 Design Kit (consisting of the LMP90100 Evaluation Board, the SPIO-4 Digital Controller Board, the Sensor AFE software, and this user’s guide) is designed to ease evaluation and design-in of National Semiconductor’s LMP90100 24-bit Fully Programmable Low Power Σ∆ ADC with True Continuous Background Calibration. Data capturing and static evaluations are simplified by connecting the SPIO-4 Digital Controller Board (SPIO-4 board) to a PC via USB and running the Sensor AFE software. The data capture board will generate the SPI signals to communicate to and capture data from the LMP90100. The user will also have the option to evaluate the LMP90100 without using the SPIO-4 board or the Sensor AFE software. The LMP90100 will digitize the analog input, and the software will display these results in time domain and histogram. The software also allows customers to write to and read from registers, to calibrate the device or the system’s gain, offset, and scale settings, and most importantly, to configure and learn about the LMP90100. This document describes the connection between the boards and PC, provides a quick start for a DC, shorted input, 3-wire RTD, and thermocouple/temperature sensor applications. This document also describes how to evaluate the LMP90100 with and without the SPIO-4 board and provides the schematic, board layouts, and BOM. 2.0. Equipment 1. 2. 3. 4. 5. 6. 7. LMP90100 evaluation board (NSID: LMP90100EB) SPIO-4 digital controller board (NSID: SPIO-4) PC with Sensor AFE software Power supplies (optional) to source VA, VIO, VREFP, or VIN. Multimeter (optional) 3-wire RTD (optional) Thermocouple (optional) 2.1. Connection Diagram Figure 1 shows the connection between the LMP90100 Evaluation Board (LMP90100EB), SPIO-4 board, and a personal computer with the LMP90100 Sensor AFE software. LMP90100 can be powered using external power supplies or from the SPIO-4 board. 2 LMP90100 EVB User’s Guide August 2012 Figure 1 – Connection Diagram March 2009 SNAU028A 3 2.2. Board Assembly The schematic of the evaluation board can be seen in section 10. Figure 2 – LMP90100 Evaluation Board Assembly 4 LMP90100 EVB User’s Guide August 2012 3.0. Example #1: Quick Start – DC Reading The following procedures show a quick method to assemble the LMP90100EB and perform a quick DC voltage reading. A. LMP90100 EB Jumper Connections 1. The jumpers for this example application can be seen in Figure 3 and Table 1. Jumpers not shown can be left unpopulated. 2. The SPIO-4 board is properly setup out of the box (no assembly required). 3. The schematic for the LMP90100EB can be seen section 10. Figure 3 – Jumper Settings (Default) for the DC Test Jumpers JP1: VA_EXT March 2009 Pin P1-P2 Purpose Source VA externally SNAU028A 5 JP2: VIO_EXT JP6 JP7 JP10: VIN_JMP JP10: VIN_JMP JP13: VREF_JMP1 JP13: VREF_JMP1 JP14: VREF_JMP2 JP14: VREF_JMP2 P1-P2 P1-P2 P1-P2 P5-P6 P7-P8 P3-P4 P9-P10 P1-P2 P3-P4 Source VIO externally Connect VA supply to the LMP90100 Connect VIO supply to the LMP90100 Connect a DC input to VIN2 Connect a DC input to VIN3 VREFP1 = 4.1V from U4 (LM4140) VREFN1 = ground Connect VREFP1 source to the LMP90100 Connect VREFN1 source to the LMP90100 Table 1 - Jumpers for DC Measurement B. Installing/Opening the Software - follow section 9.0 to install and open the LMP90100 Sensor AFE software. C. Connecting and Powering the Boards – these steps have to be done in this order. 1. Connect a 5.0V power supply to J1 (VA_EXT) and GND (J2). Don’t turn on the power supply yet. 2. Connect a 5.0V power supply to J3 (VIO_EXT) and GND (J2). Don’t turn on the power supply yet. 3. Turn on the power supply that is sourcing VA (J1), and then turn on the power supply that is sourcing VIO (J3). 4. Connect the LMP90100EB’s JP12 to SPIO-4 Board’s J6 (pins 1-16). See Figure 4. Figure 4 – LMP90100EB-to-SPIO-4 Board Connection 5. Connect SPIO-4 board to a PC via USB. 6. Use a multimeter to measure LMP90100EB’s JP6, JP7; they should all be approximately 5V. If they are not, check your power supplies and jumpers. Measure JP14.P2; it should be approximately 4.1V. If it’s not, check your jumpers and U4. D. Configuring the LMP90100 Using the Sensor AFE Software 6 LMP90100 EVB User’s Guide August 2012 Follow the step-by-step instructions under the “HelpBar” mini-tab (left hand side of the GUI) to configure the LMP90100 for this example. These step-by-step instructions are discussed in details below, and the recommended configuration should look similar to the figure below. Figure 5 - Recommended LMP90100 Configuration for a DC Reading 1. Step 1: Select a Sensor - select “DC”  “DC” since the input source is not a sensor. 2. Step 2: Configure Inputs – click on the “INPUT MUX” block to set “VINP = 000: VIN2” and “VINN = 001: VIN3”. Since VIN0 = (3/4) VREF1 and VIN1 = (1/4) VREF1, the measurement across this channel will be (1/2) VREF1. 3. Step 3: Source IB1/IB2? – this step can be ignored because neither IB1 nor IB2 is connected to the inputs. 4. Step 4: Select Reference – click on the “VREF MUX” block to choose “VREF_SEL = 0: VREF1”. Make sure the VREF1 value on the upper left hand side of the GUI is 4.1V (default). 5. Step 5: Set Gain – since VIN = (1/2) VREF1, the maximum gain that can be set is 2 (with buffer disabled). If the buffer is enabled, then the output might rail and enable the “OFLO_FLAGS” flag. In this case, set the gain to 1. Click on the “FGA” block, “PGA” block, or the “Gain” slider to select the gain. March 2009 SNAU028A 7 6. Step 6: Set Buffer – click on the “BUFF” block to include or exclude the buffer from the signal path. 7. Step 7: Set Calibration - click on the “No Calibration” block to enable or disable calibration. Refer to the LMP90100 datasheet to more information on the LMP90100’s background calibration types and modes. 8. Step 8: Int/Ext CLK? – click on the “CLK MUX” block and make sure the internal clock is selected. 9. Step 9: Performance - click on the “Performance” mini-tab. This tab displays the Estimated Device Performance base on the block diagram that you’ve configured, as well as the Measured System Performance if you’ve connected a board and ran the LMP90100. E. Capturing Data 1. Click on the “Measurement” tab and set the “Scan Mode” as follows: Figure 6 - Scan Mode Settings 2. Under the “Output Format” field, select Display as “Output Voltage (V)” 3. Under the “Stop Condition” field, select Run as “1000” samples. 4. Click on the “Run” button to view the output voltage results. A reading of approximately ½(VREF1) should be plotted as seen in Figure 7. 8 LMP90100 EVB User’s Guide August 2012 Figure 7 - Results for Example #1 - DC Reading March 2009 SNAU028A 9 4.0. Example #2: Shorted Input and Calibration Test This example demonstrates LMP90100’s ability to calibrate for offset error. A. LMP90100 EB Jumper Connections 1. Connect the LMP90100EB jumpers like the jumpers shown in the figure and table below. Jumpers not mentioned can be left unconnected. 2. The SPIO-4 board is properly setup out of the box (no assembly required). 3. The schematic for the LMP90100EB can be seen in section 10. Figure 8 – LMP90100EB Jumper Settings for the Shorted input and Calibration Test Jumpers JP1: VA_EXT JP2: VIO_EXT JP4 JP6 JP7 JP9 JP10: VIN_JMP JP13: VREF_JMP1 JP13: VREF_JMP1 10 LMP90100 EVB User’s Guide Pin P2-P3 P2-P3 P2-P3 P1-P2 P1-P2 P1-P2 P5-P6 P3-P4 P9-P10 Purpose Source VA with the 5.0V from the SPIO-4 board. Source VIO with the 5.0V from the SPIO-4 board. Get 5.0V from the SPIO-4 board Connect VA supply to the LMP90100 Connect VIO supply to the LMP90100 Force the odd pins of JP10 to be midscale (VREF1/2) Connect a DC (midscale) voltage to VIN2 VREFP1 = 4.1V from U4 (LM4140) VREFN1 = ground August 2012 Jumpers JP14: VREF_JMP2 JP14: VREF_JMP2 Pin P1-P2 P3-P4 Purpose Connect VREFP1 source to the LMP90100 Connect VREFN1 source to the LMP90100 Table 2 - Jumpers for the Shorted Input Measurement B. Installing/Opening the Software – skip this step if it’s already done. If not, follow section 9.0 to install and open the LMP90100 Sensor AFE software. C. Connecting and Powering the Boards 1. Connect the LMP90100EB to the SPIO-4 board as seen in Figure 4. 2. Connect SPIO-4 board to a PC via USB. 3. Use a multimeter to measure LMP90100EB’s JP6 and JP7; they should all be approximately 5V, and JP14.P2 should be 4.1V. If they are not, check your power supplies and jumpers. D. Configuring the LMP90100 Using the Sensor AFE Software Follow the step-by-step instructions under the “HelpBar” mini-tab (left hand side of the GUI) to configure the LMP90100 for this example. These step-by-step instructions are discussed in details below, and the recommended configuration should look similar to figure 9. Figure 9 - Recommended LMP90100 Configuration for the Shorted Input and Calibration Test 1. Step 1: Select a Sensor - select “DC”  “DC” since the input source is a DC voltage March 2009 SNAU028A 11 2. Step 2: Configure Inputs – click on the “INPUT MUX” block to set “VINP = 000: VIN2” and “VINN = 000: VIN2”. Since VINP = VINN, a reading of approximately 0V should be read. 3. Step 3: Source IB1/IB2? – this step can be ignored because neither IB1 nor IB2 is connected to the inputs. 4. Step 4: Select Reference – click on the “VREF MUX” block to choose “VREF_SEL = 0: VREF1”. On the left hand side of the GUI, change the VREF1 (left hand side of the GUI) value to 4.1V. 5. Step 5: Set Gain – since VIN ≈ 0V, the maximum gain that can be set is 128x. Click on the “FGA” block, “PGA” block, or the “Gain” slider to select the gain. 6. Step 6: Set Buffer – click on the “BUFF” block to include or exclude the buffer from the signal path. 7. Step 7: Set Calibration - the purpose of this example is to show how the LMP90100 removes the offset error using background calibration. Initially, disable the calibration by selecting “000: No Calibration” under the “No Calibration” block. Refer to the LMP90100 datasheet to more information on the LMP90100’s background calibration types and modes. 8. Step 8: Int/Ext CLK? – click on the “CLK MUX” block and make sure the internal clock is selected. 9. Step 9: Performance - click on the “Performance” mini-tab. This tab displays the Estimated Device Performance base on the block diagram that you’ve configured, as well as the Measured System Performance if you’ve connected a board and ran the LMP90100. E. Capturing Data without Calibration 1. Click on the “Measurement” tab and set the “Scan Mode” as follows: Figure 10 - Scan Mode Settings 2. Under the “Output Format” field, select Display “Output Voltage (V)” 3. Under the “Stop Condition” field, select Run “500” samples. 4. Click on the “Run” button to view the output voltage results. A reading in the hundreds of uV should be plotted similar to Figure 11. 12 LMP90100 EVB User’s Guide August 2012 Figure 11 - Results for Shorted Input Test without Calibration F. Capturing Data with Calibration 1. In the “Measurement” tab, go to “Quick Control  BGCAL_MODE” and change the background calibration to “001: Offset Cor / Gain Est”. 2. Click on the “Run” button again to view the output voltage results. A mean output reading closer to 0V should be plotted similar to Figure 12. This decrease in the mean output reading demonstrates the LMP90100 offset calibration feature. March 2009 SNAU028A 13 Figure 12 - Results for Shorted Input Test with Calibration 14 LMP90100 EVB User’s Guide August 2012 5.0. Example #3 - 3-wire RTD Application A 3-wire RTD has a typical configuration shown in Figure 13. This section will explain how to configure the LMP90100EB and software tool to evaluate a 3-wire RTD. z Figure 13 - 3-Wire RTD Configuration A. LMP90100EB Jumper Connections 1. The jumper settings for this application are shown below. The jumpers not mentioned can be left unconnected. 2. The SPIO-4 board is properly setup out of the box (no assembly required). 3. The schematic for the LMP90100EB can be seen in section 10. March 2009 SNAU028A 15 Figure 14 – Jumper Settings (Default) for the 3-wire RTD Example Jumpers JP1: VA_EXT JP2: VIO_EXT JP4 JP6 JP7 JP11: RTD_JMP JP11: RTD_JMP JP11: RTD_JMP JP11: RTD_JMP JP11: RTD_JMP JP11: RTD_JMP Pin P2-P3 P2-P3 P2-P3 P1-P2 P1-P2 P1-P2 P3-P4 P7-P8 P9-P10 P11-P12 P13-P14 Purpose Source VA with the 5.0V from the SPIO-4 board. Source VIO with the 5.0V from the SPIO-4 board. Get 5.0V from the SPIO-4 board Connect VA supply to the LMP90100 Connect VIO supply to the LMP90100 Connect IB1 to the RTD Connect the RTD to VIN0 Connect IB2 to the RTD Connect the RTD to VIN1 Connect the RTD to VREFP2 Connect VREFN2 to ground Table 3 – LMP90100EB Jumpers for the RTD Application 16 LMP90100 EVB User’s Guide August 2012 B. Installing/Opening the Software – skip this step if it’s already done. If not, follow section 9.0 to install and open the LMP90100 Sensor AFE software. C. Connecting and Powering the Boards 1. Connect the LMP90100EB to the SPIO-4 board as seen in Figure 4. 2. Connect SPIO-4 board to a PC via USB. 3. Use a multimeter to measure LMP90100EB’s JP6 and JP7; they should all be approximately 5.0V. If they are not, check your power supplies and jumpers. D. Connecting the Sensor to the LMP90100EB 1. Connect a 3-wire RTD to J10 as seen in the image below. The white wire should be at J10.P1, and the red wires should be at J10.P3 and J10.P4. Figure 15 – Jumper Settings (Default) for the 3-wire RTD Example E. Configuring the LMP90100 Using the Sensor AFE Software Follow the step-by-step instructions under the “HelpBar” mini-tab (left hand side of the GUI) to configure the LMP90100 for this example. These step-by-step instructions are discussed in details below, and the recommended configuration should look similar to Figure 16. March 2009 SNAU028A 17 Figure 16 - Recommended LMP90100 Configuration for a PT-100 RTD 1. Step 1: Select a Sensor - select “RTD”  “PRTF-10-2-100-1/4-6-E”. 2. Step 2: Configure Inputs – click on the “INPUT MUX” block to set “VINP = 000: VIN0” and “VINN = 001: VIN1”. Click on the “Eval. Board Settings” button located next to the block diagram. This should open up a PDF of the schematic and calculation for this 3wire RTD example. 3. Step 3: Source IB1/IB2? – click on the “EXC. Current” block to set “RTD_CUR_SEL = 1010: 1000 uA”. 4. Step 4: Select Reference – click on the “VREF MUX” block to choose “VREF_SEL = 1: VREF2”. Make sure the value for VREF2 (upper left hand side of the GUI) is 2.0V = [RREF * (IB1+IB2)] = [1k * (1mA + 1mA)]. 5. Step 5: Set Gain – since VIN = 0.109 V at room temperature for IB1 = IB2 = 1000 uA, the maximum gain can be 16x. Click on the “FGA” block, “PGA” block, or the “Gain” slider to select the gain. (For this exercise, the gain can be set to 1x). 6. Step 6: Set Buffer – click on the “BUFF” block to include or exclude the buffer from the signal path. (For this exercise, the buffer can be disabled). 18 LMP90100 EVB User’s Guide August 2012 7. Step 7: Set Calibration - click on the “No Calibration” block to enable or disable calibration. Refer to the LMP90100 datasheet to more information on the LMP90100’s background calibration types and modes. (For this exercise, the calibration can be OFF). 8. Step 8: Int/Ext CLK? – click on the “CLK MUX” block and make sure the internal clock is selected. 9. Step 9: Performance - click on the “Performance” mini-tab. This tab displays the Estimated Device Performance base on the block diagram that you’ve configured, as well as the Measured System Performance if you’ve connected a board and ran the LMP90100. F. Capturing Data 1. Click on the “Measurement” tab and set the “Scan Mode” as follows: Figure 17 - Scan Mode Settings 2. Under the “Output Format” field, select Display “Temperature (°C)” 3. Make sure the “Sensor Characteristics” is set as: 4. Under the “Stop Condition” field, select “Run Continuously”. 5. Click on the “Run” button to view the output temperature reading. A reading of approximately 23°C to 25°C (room temperature) should be plotted. March 2009 SNAU028A 19 Figure 18 – Reading of Room Temperature Using the 3-Wire RTD 20 LMP90100 EVB User’s Guide August 2012 6.0. Example #4: Thermocouple and LM94022 Application A. Thermocouple and Cold Junction Compensation Background Figure 19 – Thermocouple and Temperature Sensor Connection As described in section 17.6.2. of the LMP90100 datasheet, because a thermocouple can only measure a voltage difference and thus a temperature difference (relative temperature), it does not have the ability to measure absolute temperature. To determine the absolute temperature of the measured environment, a technique known as cold junction compensation (CJC) must be used. In a CJC technique, the “cold” junction temperature, Tcold (Figure 19), is sensed by using an IC temperature sensor, such as the LM94022. The temperature sensor should be placed within close proximity of the reference junction. The LM94022 is placed underneath the thermocouple connector J4 on the LMP90100 evaluation board. The technique to calculate for Thot using the CJC method can be found in the LMP90100 datasheet. The Sensor AFE software does have the ability to display the relative thermocouple temperature using a Type K look-up-table (http://www.intech.co.nz/products/temperature/typek.html). In addition, if the LM94022 (or any other temperature sensors) is connected to the LMP90100, then the software can also read its temperature (Tcold). However, the user has to manually enter this Tcold value in the field located on the upper left hand side of the GUI. The software will use this T_board value to calculate for Thot. B. Thermocouple and LM94022 Schematic on the LMP90100EB March 2009 SNAU028A 21 The thermocouple and temperature sensor schematic of the LMP90100 Evaluation Board are shown below. The temperature sensor is a LM94022 and is located under the thermocouple connector (J4) to provide cold junction compensation. The thermocouple connector (J4) is made for use with a type K thermocouple. The following subsections will explain how to configure the LMP90100EB for the thermocouple and IC temperature sensor applications. Figure 20 – Thermocouple and Temperature Sensor Schematic C. LMP90100EB Jumper Connections: 1. The figure and table below show the LMP90100 evaluation board jumper settings for this thermocouple application. The jumpers not mentioned can be left unconnected. 2. The SPIO-4 board is properly setup out of the box (no assembly required). 3. The schematic for the LMP90100EB can be seen in section 10. 22 LMP90100 EVB User’s Guide August 2012 Figure 21 – Jumper Settings for the Thermocouple and LM94022 Example Jumpers JP1: VA_EXT JP2: VIO_EXT JP4 JP6 JP7 JP5: TC_JMP JP5: TC_JMP JP3: LM94022_JMP JP13: VREF_JMP1 JP13: VREF_JMP1 JP14: VREF_JMP2 JP14: VREF_JMP2 Pin P2-P3 P2-P3 P2-P3 P1-P2 P1-P2 P1-P2 P3-P4 P1-P2 P3-P4 P9-P10 P1-P2 P3-P4 Purpose Source VA with the 5.0V from the SPIO-4 board. Source VIO with the 5.0V from the SPIO-4 board. Get 5.0V from the SPIO-4 board Connect VA supply to the LMP90100 Connect VIO supply to the LMP90100 Connect TCN to VIN3 Connect TCP to VIN4 Connect the output of LM94022 to VIN5 VREFP1 = 4.1V from U4 (LM4140) VREFN1 = ground Connect VREFP1 source to the LMP90100 Connect VREFN1 source to the LMP90100 Table 4 – LMP90100EB Jumpers for the RTD Application D. Installing/Opening the Software – skip this step if it’s already done. If not, follow section 9.0 to install and open the LMP90100 Sensor AFE software. E. Connecting and Powering the Boards 1. Connect the LMP90100EB to the SPIO-4 board as seen in Figure 4. March 2009 SNAU028A 23 2. Connect SPIO-4 board to a PC via USB. 3. Use a multimeter to measure LMP90100EB’s JP6, JP7, and JP14.P2; they should all be approximately 5V. If they are not, check your power supplies and jumpers. F. Connect a K type thermocouple to J4. Note that the thermocouple’s positive input (TCP) = VIN4 and negative input (TCN) = VIN3. G. Configuring the LMP90100 for the LM94022 Using the Sensor AFE Software Follow the step-by-step instructions under the “HelpBar” mini-tab (left hand side of the GUI) to configure the LMP90100 for the LM94022 IC sensor. These step-by-step instructions are discussed in details below, and the recommended configuration should look similar to Figure 22. Figure 22 - Recommended LMP90100 Configuration for the LM94022 1. Step 1: Select a Sensor – click on the “+” button to enter the “Sensor Database” tab. Select “Analog”  “LM94022”. 2. Step 2: Configure Inputs – click on the “INPUT MUX” block to set “VINP = 101: VIN5” and “VINN = 111: VIN7”. Click on the “Eval. Board Settings button located next to the block diagram. This should open up a PDF of the schematic of the thermocouple and LM94022 application. 3. Step 3: Source IB1/IB2? – this step can be ignored because neither IB1 nor IB2 is connected to the inputs. 24 LMP90100 EVB User’s Guide August 2012 4. Step 4: Select Reference – click on the “VREF MUX” block to choose “VREF_SEL = 0: VREF1”. Make sure the value for VREF1 = 4.1V. 5. Step 5: Set Gain – click on the “FGA” block, “PGA” block, or the “Gain” slider to select the gain. The gain can be set to 1 in this example. 6. Step 6: Set Buffer – click on the “BUFF” block to include or exclude the buffer from the signal path. The buffer can be excluded from the signal path in this example. 7. Step 7: Set Calibration - click on the “No Calibration” block to enable or disable calibration. Refer to the LMP90100 datasheet to more information on the LMP90100’s background calibration types and modes. The calibration can be OFF for this example. 8. Step 8: Int/Ext CLK? – click on the “CLK MUX” block and make sure the internal clock is selected. 9. Step 9: Performance - click on the “Performance” mini-tab. This tab displays the Estimated Device Performance base on the block diagram that you’ve configured, as well as the Measured System Performance if you’ve connected a board and ran the LMP90100. H. Configuring the LMP90100 for the Thermocouple Using the Sensor AFE Software Follow the step-by-step instructions under the “HelpBar” mini-tab (left hand side of the GUI) to configure the LMP90100 for the thermocouple. These step-by-step instructions are discussed in details below, and the recommended configuration should look similar to the figure below. March 2009 SNAU028A 25 Figure 23 - Recommended LMP90100 Configuration for a Thermocouple 1. Step 1: Select a Sensor - select “Thermocouple”  select the thermocouple of your choice or add your own thermocouple by clicking on “New”. 2. Step 2: Configure Inputs – click on the “INPUT MUX” block to set “VINP = 100: VIN4” and “VINN = 011: VIN3”. Click on the “Eval. Board Settings button located next to the block diagram. This should open up a PDF of the schematic for a thermocouple. 3. Step 3: Source IB1/IB2? – this step can be ignored because neither IB1 nor IB2 is connected to the inputs. 4. Step 4: Select Reference – click on the “VREF MUX” block to choose “VREF_SEL = 0: VREF1”. Make sure the value for VREF1 = 4.1V. 5. Step 5: Set Gain – since the differential junction across a thermocouple is low, the maximum gain can be 128x. Click on the “FGA” block, “PGA” block, or the “Gain” slider to select the gain. In this example, the gain can be 1x. 6. Step 6: Set Buffer – click on the “BUFF” block to include or exclude the buffer from the signal path. The buffer can be excluded from the signal path in this example. 7. Step 7: Set Calibration - click on the “No Calibration” block to enable or disable calibration. Refer to the LMP90100 datasheet to more information on the LMP90100’s background calibration types and modes. In this example, the calibration can be OFF. 26 LMP90100 EVB User’s Guide August 2012 8. Step 8: Int/Ext CLK? – click on the “CLK MUX” block and make sure the internal clock is selected. 9. Step 9: Performance - click on the “Performance” mini-tab. This tab displays the Estimated Device Performance base on the block diagram that you’ve configured, as well as the Measured System Performance if you’ve connected a board and ran the LMP90100. F. Capturing Data 1. Click on the “Measurement” tab and set the “Scan Mode” as follows: Figure 24 - Scan Mode Settings 2. 3. 4. 5. March 2009 Under the “Output Format” field, select Display “Temperature (C)” Under the “Run For” field, plot the “Selected Channel: CH0” Under the “Stop Condition” field, select Run “1000 Samples”. Click on the “Run” button to capture the temperature (Tcold) reading from the LM94022 (see figure below). SNAU028A 27 Figure 25 – Temperature Sensor Reading for Tcold 6. Enter the LM94022’s mean temperature (see red box in the figure above) in the “T_board” field located on the upper left hand side of the GUI. The software will use this “T_board” value to calculate for the thermocouple’s absolute temperature (Thot). If the LM94022 or any other temperature sensor is not connected to do cold junction compensation, then the user can still manually enter a Tcold value in the “T_board” field box. 7. In the Sensor Window, click on CH1 to read the thermocouple’s voltage and temperature. Figure 26 – Sensor Window 8. In the “Measurement” tab, choose the “Output Format” as “Output Voltage (V)”, and click “Run” to capture the thermocouple relative voltage. Figure 27 – Thermocouple Voltage Relative Reading 28 LMP90100 EVB User’s Guide August 2012 9. In the “Output Format” field, choose to Display “Rel. Temp (C)”. This shows the relative temperature of the thermocouple. This reading is not factoring in the cold junction compensation. Figure 28 – Thermocouple Relative Temperature Reading 10. In the “Output Format” field, choose to Display “Abs. Temp (C)”. This uses the “T_board” temperature and factor in the cold junction compensation method to display the absolute temperature (Thot) of the thermocouple. March 2009 SNAU028A 29 Figure 29 – Thermocouple Absolute Temperature Reading 30 LMP90100 EVB User’s Guide August 2012 7.0. Powering the LMP90100EB There are two ways in which VA and VIO can be sourced: external supplies or SPIO-4 power. If using external power supplies to source VA and VIO, then do the following: 1. Connect an external power supply to J1 for VA. Jumper pins 1 and 2 of JP1 to select this option. 2. Connect an external power supply to J2 for VIO. Jumper pins 1 and 2 of JP2 to select this option. 3. Jumper JP6 to connect the external power to VA. 4. Jumper JP7 to connect the external power to VIO. If using the SPIO-4 power to source VA and VIO, then do the following: 1. Jumper pins 1 and 2 of JP4 to select 3.3V for VA and VIO, or jumper pins 2 and 3 of JP4 to select 5.0V for VA and VIO. 2. Jumper pins 2 and 3 of JP1 to select the SPIO-4 power for VA. 3. Jumper pins 2 and 3 of JP2 to select the SPIO-4 power for VIO. 4. Jumper JP6 to connect the SPIO-4 power to VA. 5. Jumper JP7 to connect the SPIO-4 power to VIO. The schematic for the LMP90100EB can be seen in section 10. 8.0. Evaluating the LMP90100 without the SPIO-4 Board. The SPIO-4 digital controller board is used to generate the SPI signals to communicate to the LMP90100. Without the SPIO-4 board, the Sensor AFE software for the LMP90100 cannot be used to capture and analyze data from the LMP90100EB. If the SPIO-4 board is not available but LMP90100 evaluation is desirable, then connect your own SPI signals to J8 of the LMP90100EB as seen below. Figure 30 - LMP90100EB’s J8 for SPI Signals Refer to the LMP90100 datasheet for more information on the LMP90100’s SPI protocol. March 2009 SNAU028A 31 9.0. Installing the LMP90100 Sensor AFE Software Each Sensor AFE product will have its own software. To access the Sensor AFE software for LMP90100, follow the steps below. 1. Getting the Zip Files a. You can find the latest downloadable Sensor AFE software at www.ti.com/sensorafe  Tools b. Download the zip file onto your local hardrive. Unzip this folder. 2. Installing the Driver - skip this step if you don’t have the LMP90100EB and SPIO4 digital controller board. a. Connect the LMP9100EB to SPIO4 board b. Connect the SPIO4 board to your PC. c. Follow the steps below to install the driver: Figure 31 - Click on "No, not this time" 32 LMP90100 EVB User’s Guide August 2012 Figure 32 – Choose to “install from a list or specific location (Advanced)” Figure 33 – Find the driver in the “NSC_USB_v1.0.8.0” folder (it should be located in the unzipped folder) March 2009 SNAU028A 33 Figure 34 – Waiting for the computer to install the driver 34 LMP90100 EVB User’s Guide August 2012 Figure 35 – Installation is complete 3. Open the un-zipped folder and click on “lmp90100.exe” to start the software. If you don’t have the boards, you’ll get an error message. Ignore that error message and click “Ok” to continue. March 2009 SNAU028A 35 10.0. Schematic OUT VDD 4 2 GND R2 2k, 0.1% TCN C3 10nF C4 2.2uF 2 4 1 3 3 1 2 2 3 1 1 1 VIO R6 1M VIO R10 1M VIO R11 1M VIO R12 1M VIO R13 1M VIO R14 1M VIO R15 1M VIO TP6 GND JP8 GPIO_2_GND R16 1M GND 51 D6_DRDY B2 R18 D5 D4 D3 D2 D1 D0 SDO_DRDY B 51 R20 SDI SCLK CSB GND XIN_CLK GND GND 1 CSB 3 SCLK SDO_DRDY B2 5 7 SDI 9 11 SDA 13 VDD3P3 15 VIO 1 TP15 GND RREF 1k, 0.1% GND 1 2 1 1 GND VREFN1 GND L4 100 uH 1 C21 0.1 uF VIN7_VREFN2 GND C29 0.1 uF 1 SCL VDD5P0 GND C19 0.1 uF GND SCL SDA GND TP16 GND 1 VIN6_VREFP2 C27 10 uF D6_DRDY B2 GND C28 10 uF 1 C20 0.1 uF 1 2 VREFP1 VREFP1 VREFN1 VIN6_VREFP2 VIN7_VREFN2 2 2 4 6 8 1 1 3 5 7 GND VDD3P3 GND 1 C26 10nF 2 1 C25 NS 2 L3 100 uH 2 4 6 8 10 2 J13 VREFN_EXT 1 1 3 5 7 9 VA 4P1V GND GND 2 4 6 8 10 12 14 16 U3 24C02 EEPROM 8 VCC A0 7 2 WP A1 6 3 SCL A2 5 4 GND SDA C18 0.1 uF GND 1 1.0 uF C24 GND 2 J12 GND J11 VREFP_EXT 1 1 TP17 GND GND 2 C23 0.1 uF JP14 VREF_SELECT2 1 GND JP13 VREF_SELECT1 1 1 2 GND 2 4 6 8 10 12 14 16 1 GND GND 2 1 2 C22 1.0 uF U4 LM4140C-4.1 (NS) 8 GND GND3 7 VIN GND2 6 EN VREF 5 GND1 NC 1 3 5 7 9 11 13 15 VDD3P3 GND 1 2 3 4 TP13 GND JP12 SPIO4 CONNECTOR GND GND GND VDD5P0 GND TP12 GND 1 GND TP14 GND 1 IB1 VIN0 VIN2 IB2 VIN1 VIN6_VREFP2 VIN7_VREFN2 1 RRTD2 0 2 4 6 8 10 12 14 TP11 GND 1 TP10 GND TP9 GND J8 SPI_PROBE 1 5 1 1 1 NS R25 51 1 1 3 5 7 9 11 13 RRTD1 0 1 2 3 4 5 SDO_DRDYB SDI SCLK CSB GND GND 10nF 2 1 R19 1k, 0.1% SDO_DRDY B2 EXT_CLK J9 R24 2 4 6 8 10 12 14 1 3 5 7 9 11 13 2 C16 12pF VIO R9 1M 1 D6_DRDY B R23 0 2 1 JP11 RTD_SELECT 2 C15 12pF VIO R8 1M 1 Y1 3.57 MHz R22 0 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R7 1M 1 2 GND VIO VA D6_DRDY B VIN0 D5 VIN1 D4 VIN2 D3 VIN3 D2 VIN4 D1 VIN5 D0 VREFP1 SDO_DRDY B VREFN1 SDI VIN6_VREFP2 SCLK VIN7_VREFN2 CSB IB2 GND IB1 XIN_CLK XOUT VIO 1 C11 0.1 uF GND 2 3 4 1 2 VIN0 3 VIN1 4 VIN2 5 VIN3 6 VIN4 7 VIN5 8 VREFP1 9 VREFN1 VIN6_VREFP2 10 11 VIN7_VREFN2 12 IB2 13 IB1 14 XOUT GND C14 2.2uF C17 GND 1 GND 1 U2 LMP90100 GND 1 GND GND 1 2 3 4 C10 1.0 uF 2 C9 NS C8 0.1 uF 2 2 1 1 C7 1.0 uF GND GND 1 TP7 GND 1 1 1 1 2 C13 10 uF 2 1 2 4 6 8 10 12 14 16 1 3 5 7 9 11 13 15 1 JP9 VIN_SHORT 1 2 1 1 JP10 INPUT_SELECT GND C12 2.2uF R21 1k, 0.1% 1 GND 1 C6 NS 1 J7 VIN1 2 J6 GND J5 VIN0 J10 RTD 1 2 GND VREFP1 R5 1k, 0.1% JP7 VIO_JMP 2 1 GND GND TP5 GND 1 1 JP6 VA_JMP 1 C5 10nF 1 TP4 GND 2 R4 2k, 0.1% VIO VA TCP GND 1 1 VIN3 VIN4 2 1 1 VREFP1 R3 2k, 0.1% R17 2k, 0.1% VDD5P0 JP4 SPIO4_PWR_SELECT VIO JP5 TC_SEL 2 1 2 GND TP8 GND GND 1 1 1 TC- GND GND VA L2 100 uH R1 2k, 0.1% J4 THERMOCOUPLE TC+ L1 100 uH C2 0.1 uF 2 Place LM94022 underneath thermocouple's connector (not underneath the board) GND SPIO4_PWR VDD3P3 VDD5P0 C1 1.0 uF LM94022_JMP VIO_SELECT JP2 J3 VIO_EXT 1 TP2 GND 2 1 1 GND JP3 TP3 GND J2 GND SPIO4_PWR GND 1 3 VA_SELECT JP1 J1 VA_EXT 1 TP1 GND 5 1 GND 2 1 VIN5 GS1 GS0 1 2 3 U1 LM94022BIMG 1 GND C30 0.1 uF GND GND Title LMP90100 Customer Ev aluation Board Size C Date: Figure 36 - LMP90100EB Schematic 36 LMP90100 EVB User’s Guide August 2012 Document Number 600496 Wednesday , Nov ember 23, 2011 Sheet Rev 18 1 of 1 11.0. Layout Figure 37 - Layout – Top Layer March 2009 SNAU028A 37 Figure 38 - Layout 3rd Layer 38 LMP90100 EVB User’s Guide August 2012 12.0. BOM Item 1 2 Value 1.0 uF 0.1 uF Description CAP CER 1.0UF 10V Y5V 0603 CAP CER .1UF 0603 Source Digikey Digikey Source Part # 490-1585-1-ND 490-4779-1-ND 3 4 6 7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Quantity Reference 5 C1,C7,C10,C22,C24 10 C2,C8,C11,C18,C19,C20, C21,C23,C29,C30 4 C3,C5,C17,C26 3 C4,C12,C14 3 C13,C27,C28 2 C15,C16 1 JP1 1 JP2 1 JP3 1 JP4 1 JP5 1 JP6 1 JP7 1 JP8 1 JP9 1 JP10 1 JP11 1 JP12 1 JP13 1 JP14 10nF 2.2uF 10 uF 12pF VA_SELECT VIO_SELECT LM94022_JMP SPIO4_PWR_SELECT TC_SEL VA_JMP VIO_JMP GPIO_2_GND VIN_SHORT INPUT_SELECT RTD_SELECT SPIO4 CONNECTOR VREF_SELECT1 VREF_SELECT2 Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Digikey Sullins Connector Digikey Digikey Digikey 490-1512-1-ND 490-1743-1-ND 445-1371-1-ND PCC120CNCT-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND S1011E-36-ND A34278-40-ND S1011E-36-ND S1011E-36-ND 23 1 J1 VA_EXT Digikey J147-ND 24 3 J2,J6,J12 GND Digikey J147-ND 25 26 1 1 J3 J4 VIO_EXT THERMOCOUPLE Digikey RS Mobile J147-ND 381-7564 27 1 J5 VIN0 CAP CER 10000PF 50V 10% X7R 0603 CAP CER 2.2UF 10V Y5V 0805 CAP CER 10UF 10V Y5V 0805 CAP 12PF 50V CERM CHIP 0805 SMD CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN HEADR BRKWAY .100 80POS R/A CONN HEADER .100 SINGL STR 36POS CONN HEADER .100 SINGL STR 36POS CONN JACK BANANA UNINS PANEL MOU CONN JACK BANANA UNINS PANEL MOU CONN JACK BANANA UNINS PANEL MOU THERMOCOUPLE CLASS K SOCKET CONN JACK BANANA UNINS PANEL MOU Digikey J147-ND March 2009 SNAU028A 39 28 29 30 31 1 1 1 1 J7 J8 J9 J10 VIN1 SPI_PROBE EXT_CLK RTD 32 1 J11 VREFP_EXT 33 34 1 4 J13 L1,L2,L3,L4 VREFN_EXT 100 uH CONN JACK BANANA UNINS PANEL MOU CONN HEADER .100 SINGL STR 36POS CONN BNC FEM JACK PC MNT STRGHT TERM BLOCK PCB 4POS 5.0MM GREEN CONN JACK BANANA UNINS PANEL MOU CONN JACK BANANA UNINS PANEL MOU INDUCTOR 100UH 140MA 10% SMD 35 4 R5,R19,R21,RREF 1k, 0.1% RES 1.0K OHM 1/8W .1% 0805 SMD Digikey 36 37 4 5 RRTD1,RRTD2,R22,R23 R1,R2,R3,R4,R17 0 2k, 0.1% RES 0.0 OHM 1/10W 0603 SMD RES 2.0K OHM 1/8W .1% 0805 SMD Digikey Digikey 38 11 1M RES 1.0M OHM 1/8W 5% 0805 SMD 39 41 3 17 51 GND 42 43 44 45 46 47 1 1 1 1 1 4 R6,R7,R8,R9,R10,R11,R12, R13,R14,R15,R16 R18,R20,R25 TP1,TP2,TP3,TP4,TP5,TP6, TP7,TP8,TP9,TP10,TP11, TP12,TP13,TP14,TP15,TP16, TP17 U1 U2 U3 U4 Y1 N/A LM94022BIMG LMP90100 24C02 EEPROM LM4140C-4.1 3.57 MHz N/A Digikey Digikey Digikey Digikey J147-ND S1011E-36-ND ACX1051-ND 277-1579-ND Digikey J147-ND Digikey Digikey Digikey J147-ND 587-2038-1-ND RG20P1.0KBCTND RMCF1/160RCTND P2.0KDACT-ND RHM1.0MARCTND RES 51 OHM 1/10W 5% 0603 SMD TEST POINT PC MULTI PURPOSE BLK Digikey Digikey P51GCT-ND 5011K-ND ANALOG TEMPERATURE SENSOR LMP90100 EEPROM 256x8 4.1 V Voltage Reference CRYSTAL 3.579545 MHZ 18PF 49US BUMPON HEMISPHERE .44X.20 BLACK NSC NSC Mouser NSC Digikey Digikey LM94022BIMG LMP90100 579-24C02CSN LM4140C-4.1 XC1707-ND SJ5003-0-ND Table 5 - BOM 40 LMP90100 EVB User’s Guide August 2012 EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. 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SPACER SPACER SPACER 【Important Notice for Users of this Product in Japan】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan, 2. Use this product only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product, or 3. Use of this product only after you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to this product. Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp 【ご使用にあたっての注】 本開発キットは技術基準適合証明を受けておりません。 本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注 意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の 試験設備でご使用いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないも のとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・インスツルメンツ株式会社 東京都新宿区西新宿6丁目24番1号 西新宿三井ビル http://www.tij.co.jp SPACER SPACER EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use. 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LMP90100EB/NOPB 价格&库存

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LMP90100EB/NOPB
    •  国内价格
    • 1+3664.39680
    • 200+1462.12560
    • 500+1413.26640
    • 1000+1389.11760

    库存:0