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Manual National LM95235

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  • National LM95235 - page 1

    © Copyright 2006 National Semiconduc tor Corporation 1 www.national.com Revision A April 14, 2006 LM95235 Evaluation Board User’s Guide LM95235 Evaluation Board User’s Guide ...

  • National LM95235 - page 2

    © Copyright 2006 National Semiconduc tor Corporation 2 www.national.com LM95235 Evaluation Board User’s Guide Table of Contents Table of Contents 2 R e f e r e n c e s 3 1.0 Introduction 4 2.0 Quick Start 5 3.0 Functional Description 7 4.0 Software Installation and Operation 8 5.0 Electrical and Mechanical Sp ecifications 9 5.1 Electrical Specif ...

  • National LM95235 - page 3

    © Copyright 2006 National Semiconduc tor Corporation 3 www.national.com LM95235 Evaluation Board User’s Guide References 1. “LM95235 Precision Remote Diode Temperatur e Sensor With SMBus Interface and TruTherm™ Technology” datasheet. The latest copy of the LM95235 datasheet can be obtained by going to the National Semiconductor website www ...

  • National LM95235 - page 4

    1.0 Introduction The LM95235 Evalu ation Board i s used togethe r with the National Semicondu ctor SensorEval software (provided in the kit), and with a USB cable (not provided in th e kit), and with an external personal computer (PC). Powe r to the LM95235 Evaluation Bo ard is provide d by the +5 V DC line of the USB connection. No extern al power ...

  • National LM95235 - page 5

    2.0 Quick Start 1. Install the CD into t he CD drive of the c omputer and install the SensorEval software (see Section 4.0). 2. Hookup the USB cable between the PC or notebook c ompute r and the L M95235EV AL board as shown in Quick Start Diagram (See Section 2.1). 3. Run the Sens orEval soft ware clicking t he icon on the desktop. The first screen ...

  • National LM95235 - page 6

    6. The Screen should look like this: Local (on-chip) and remote tem peratures should read continuousl y. The user ca n experim ent with the different settings of Address BF. 7. If the user clicks the 06-FF tab the next sc reen will look like this: The user can experiment with the Mask settings. Also the user can change the conversion rate. The next ...

  • National LM95235 - page 7

    8. If the user clicks on the Start Plot butto n a graph box will appear and will graph the temperature. An example is shown below 9. If the user selects the Start Log button the following screen will appear. The user then enters the filename that he chooses to log the data into. © Copyright 2006 National Semiconduc tor Corporation 7 www.national.c ...

  • National LM95235 - page 8

    2.1 Quick Start Diagram Important! NO EXTERNAL P OWER SUPPLY OR SI GNAL INPUTS ARE REQUIRED! USB Cable to Computer Computer with SensorEval software loaded National Semiconductor LM95235 Evaluation Board R ev. 1 LM95235 JP2 N/C N/C TCRIT# OS/A0 SCL +3.3 SDA © Copyright 2006 National Semiconduc tor Corporation 8 www.national.com ...

  • National LM95235 - page 9

    © Copyright 2006 National Semiconduc tor Corporation 9 www.national.com 3.0 Functional Description The LM95235 Evaluation Board, along with the SensorEval So ftware, provi des the system designer with a convenient way to learn abou t the operation of the LM95235 Temperature Sensor c hip. The user simply has to install the SensorEval so ftware on h ...

  • National LM95235 - page 10

    © Copyright 2006 National Semiconduc tor Corporation 10 www.national.com 4.0 Software Installation and Operation 4.1 Installation The CD provided in the LM95235 Evalu ation Board Kit contains the Sens orEval software us ed to make the LM95235 Evaluation Board operate wit h the user’s PC. It is assum ed that the user will be using a PC with a Pen ...

  • National LM95235 - page 11

    5 .0 Electrical and Mechanical Specifications 5.1 Electrical Specifications Power Requirements The Boar d uses the +5.0 VD C and GND lin es from the USB connection. This +5.0 VDC voltage is regulated down to +3.3 VDC for board power. * NO EXTERNAL POWER SUPPLY INPUTS A RE REQUIRED * +5.0 ± 0. 1 V, 100 mA ma x. 5.2 Electrical Schematic C20 0.1uF R7 ...

  • National LM95235 - page 12

    5.3 Evaluation Board Layout Figure 5.3 Layout diagram of the LM95235 Eval uation Board (Note: socket and socke t area not stuffed.) © Copyright 2006 National Semiconducto r Corporation 12 www.national.com ...

  • National LM95235 - page 13

    © Copyright 2006 National Semiconducto r Corporation 13 www.national.com 5.4 Bill of Materials for LM95235 Evaluation Board Item Qty Reference Part PCB Footprint 1 11 C1,C2,C3,C4,C5,C6, Capacitor, SMD, ceramic, 0.1uF sm/c_0805 C12,C15,C17 ,C20 2 2 C9, C10 Capacitor, SMD, cerami c, 33 pF sm/c_0805 3 3 C11,C14,C16 Capacitor, SMD, cerami c, 2.2 uF sm ...

  • National LM95235 - page 14

    5.4 Mechanical Specifications 5.4.1 Operating Mechanical and Envi ronmental Specifications Minimum Typical Maximum Tempera ture 0 ° C 25 ° C 70 ° C 5.4.2 Evaluation Board Basic Dimensi ons 2.45 in/6.22 cm 3.25 in/8.76 cm 5.4.3 Electrostatic Discharge (ESD) Precau tions The user shall use ESD precautions as specifi ed in National Semiconductor ES ...

  • National LM95235 - page 15

    © Copyright 2006 National Semiconducto r Corporation 15 www.national.com BY USING THIS PRODUCT, YOU ARE AGREEING TO BE BO UN D BY T HE TERMS AND CONDITIONS OF NATIONAL SEMICO NDUCTOR'S END USER LIC ENSE AGREEMENT. DO NOT USE TH IS PRODUCT UNTIL YOU HAVE READ AND AGRE ED TO THE TERMS AND CONDITIONS OF THAT AGREEMENT. IF YOU DO NOT AGREE WITH T ...

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