National Semiconductor LM32 User Manual Download

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Summary of Contents for LM32

Page 1: ...National Semiconductor is now part of Texas Instruments Search http www ti com for the latest technical information and details on our current products and services 1 of 22 ...

Page 2: ... Copyright 2004 National Semiconductor Corporation 1 www national com Revision B November 9 2004 LM32 LM40 LM41 Evaluation Board User s Guide LM32 LM40 LM41 Evaluation Board User s Guide 2 of 22 ...

Page 3: ...nection Tables 12 3 1 1 LM32 Evaluation Board Connection Table 12 3 1 2 LM40 Evaluation Board Connections Table 13 3 1 3 LM41 Evaluation Board Connections Table 14 4 0 Software Installation and Operation 15 5 0 Electrical and Mechanical Specifications 16 5 1 Electrical Specifications 16 5 2 Electrical Schematic 16 17 5 3 Evaluation Board Layout 18 5 4 Bill of Materials 19 5 5 Mechanical Specificat...

Page 4: ...iode Inputs and SensorPath Bus The latest copy of the LM32 LM40 LM41 datasheets can be obtained by going to the National Semiconductor website www national com by searching on LM32 LM40 or LM41 and then downloading the appropriate datasheet file 2 SensorEval Version 1 04b or later Evaluation Board CD containing a The SensorEval exe executable program used to run the LM32 LM40 or LM41 Evaluation Bo...

Page 5: ...ftware and selects the LM32 LM40 LM41 Eval Board radio button The software allows the user to select which of the LM32 LM40 or LM41 devices is used The block diagram below describes the LM32 LM40 LM41 Evaluation Board itself The USB input provides the 5 0 VDC power to the board which is regulated down to 3 3 VDC to power the IC s The EEPROM is programmed at the factory with a unique ID code for th...

Page 6: ... PC or notebook computer and the LM32 LM40 LM41 Evaluation Board as shown in Quick Start Diagram below 2 1 Quick Start Diagram Important NO EXTERNAL POWER SUPPLY OR SIGNAL INPUTS ARE REQUIRED For Socket not used LM32 40 41 Evaluation Board National Semiconductor Q1 LM41 LM40 LM32 LM32 LM40 LM41 U4 J3 J2 J6 Q2 See Connection Diagrams See Connection Diagrams LM32 40 41 PC with SensorEval software in...

Page 7: ... that there are three tabs for the registers 00 through 05 08 through 09 and 09 through 20 The first screen above displays the registers 00hex through 05hex For Register 05 Device Func1 Enable select ENABLED 4 Click on the 09 20 Register Tab The Screen should look like this For Register 0A select Enable for Temp Sensor 0 1 and 2 Note that Temp2 Remote sensor Q1 on the board 2 is displayed in the b...

Page 8: ...s on the Start Plot button a graph box will appear and will graph the temperature An example is shown below 7 If the user clicks on the Start Log button a screen will appear that looks like this The user may then select whatever directory and file name of their choice and click on Open Data will be stored in the file for each date time and temperature 8 of 22 ...

Page 9: ...t there are four tabs for the registers 00 through 04 05 through 09 and 09 through 10 11 and 12 20 The first screen above displays the registers 00hex through 04hex 4 Click on the 05 09 Register Tab The Screen should look like this For Register 05 select Enable for Device Func2 Enable and Device Func1 Enable 5 Click on the 09 10 Register Tab The screen should look like this Select Enabled for Regi...

Page 10: ...t at the voltage inputs of the LM40 will be displayed in Register 11 8 If the user clicks on the Start Plot button a graph box will appear and will graph the temperature A temperature example is shown below A Voltage Input Monitoring plot is shown below 9 If the user clicks on the Start Log button a screen will appear that looks like this The user may then select whatever directory and file name o...

Page 11: ...ice that there are four tabs for the registers 00 through 04 05 through 09 and 09 through 10 11 12 and 20 The first screen above displays the registers 00hex through 04hex 4 Click on the 05 09 Register Tab The Screen should look like this For Register 05 select Enable for Device Func2 Enable and Device Func1 Enable 5 Click on the 09 11 Register Tab The screen should look like this Select Enable fo...

Page 12: ...ges that are present at the voltage inputs of the LM41 will be displayed in Register 11 8 If the user clicks on the Start Plot button a graph box will appear and will graph the temperature A temperature example is shown below A Voltage Input Monitoring plot is shown below 9 If the user clicks on the Start Log button a screen will appear that looks like this The user may then select whatever direct...

Page 13: ...ation from the LM32 LM40 or LM41 to the PC via the USB lines 3 1 Evaluation Board Connection Tables 3 1 1 LM32 Evaluation Board Connections Only Connector Label Pin Number Description J1 N A USB Cable Input Connect the USB cable to this jack after the SensorEval software has been loaded on the PC 1 2 NC 3 4 GND 5 6 3 3_SBY This is the 3 3V voltage supplied by the on board voltage regulator 7 8 SWD...

Page 14: ...valuation board this input is jumpered to a 1 1V typical source 1 2 NC On the evaluation board this is jumpered to ground 3 4 12VIN This is the 12V voltage monitoring input to the LM40 On the evaluation board this is jumpered to 3 3V for test purposes 5 6 5VIN This is the 5V voltage monitoring input to the LM40 On the evaluation board this is jumpered to 3 3V for test purposes 7 8 D2 This is the a...

Page 15: ... 2 5V voltage monitoring input to the LM41 On the evaluation board this input is jumpered to a 1 1V typical source 1 2 NC On the evaluation board this is jumpered to ground 3 4 NC On the evaluation board this is jumpered to 3 3V 5 6 12VIN This is the 12V voltage monitoring input to the LM41 On the evaluation board this is jumpered to 3 3V for test purposes 7 8 5VIN This is the 5V voltage monitorin...

Page 16: ...ing 4 The installation process will put an icon on the PC desktop so that the SensorEval program will run when the icon is double clicked 4 2 Operation Follow the following procedure for operation the LM32 LM40 LM41 Evaluation Board using the SensorEval software 1 Run the SensorEval program by either double clicking on the icon on the desktop or by selecting Start Run and browse to find the Sensor...

Page 17: ...cifications Power Requirements The Board uses the 5 0 VDC and GND lines from the USB connection This 5 0 VDC voltage is regulated down to 3 3 VDC for board power NO EXTERNAL POWER SUPPLY INPUTS ARE REQUIRED 5 0 0 1 V 100 mA max 5 2 Electrical Schematic Page 1 of 2 Pages of the Schematic of the LM32 LM40 LM41 Evaluation Board 17 of 22 ...

Page 18: ... Copyright 2004 National Semiconductor Corporation 17 www national com 5 2 Electrical Schematic continued Page 2 of 2 Pages of the Schematic of the LM32 LM40 LM41 Evaluation Board 18 of 22 ...

Page 20: ...and for LM41 Evaluation Board only on J6 1 L1 Filter 1 uH Stewart MI1206K900R 00 1 Q2 Transistor NPN MMBT3904 SMT 3 Q1 Q3 Q4 Transistor NPN MMBT3904 SMT Do Not Stuff 1 R1 Resistor SMT 100 k 0805 2 R2 R6 Resistor SMT 1M 0805 2 R3 R4 Resistor SMT 22 Ohm 0805 4 R5 R7 R8 R9 Resistor SMT 1 5 k 0805 1 R10 R12 Resistor SMT 0 Ohm 0805 1 R17 Resistor SMT 0 Ohm 0805 Do Not Stuff 2 R11 R14 Resistor SMT 10k 0...

Page 21: ...5 C 70 C 5 4 2 Evaluation Board Mechanical Dimensions 5 4 3 Electrostatic Discharge ESD Precautions The user shall use ESD precautions as specified in National Semiconductor ESD control document SC CSI 3 038 available through www national com Drill Thru 30 for 4 40 screw clearance fit 4 Places 4 10 in 10 4 cm 3 50 in 8 89 cm 3 05 in 7 75 cm 3 65 in 9 27 cm 0 225 in 0 571 cm 0 225 in 0 571 cm 21 of...

Page 22: ...he body or b support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user 2 A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or...

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