LM95241EB National Semiconductor, LM95241EB Datasheet

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LM95241EB

Manufacturer Part Number
LM95241EB
Description
BOARD EVALUATION LM95241
Manufacturer
National Semiconductor
Series
PowerWise®, TruTherm®r
Datasheets

Specifications of LM95241EB

Sensor Type
Temperature
Sensing Range
0°C ~ 140°C
Interface
SMBus (2-Wire/I²C)
Sensitivity
±1°C
Voltage - Supply
3 V ~ 3.6 V
Embedded
No
Utilized Ic / Part
LM95241
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Revision B
January 16, 2007
LM95241 Evaluation Board User’s Guide
© Copyright 2005 National Semiconductor Corporation
1
www.national.com

Related parts for LM95241EB

LM95241EB Summary of contents

Page 1

... LM95241 Evaluation Board User’s Guide © Copyright 2005 National Semiconductor Corporation 1 Revision B January 16, 2007 www.national.com ...

Page 2

... Introduction 2.0 Quick Start 3.0 Functional Description 4.0 Software Installation and Operation 5.0 Electrical and Mechanical Specifications 5.1 Electrical Specifications 5.2 Electrical Schematic 5.3 Evaluation Board Layout 5.4 Bill of Materials 5.5 Mechanical Specifications © Copyright 2005 National Semiconductor Corporation Table of Contents ...

Page 3

... SensorEval Version 1.1.0 or later, Evaluation Board CD containing: a. The SensorEval.exe executable program used to run the LM95241 Evaluation Board softcopy of this User’s Guide c. A readme.txt file with useful information about the program softcopy of the SensorEval Software manual. © Copyright 2005 National Semiconductor Corporation References 3 www.national.com ...

Page 4

... VDC +3. 3 VDC Voltage Regulator Circuit © Copyright 2005 National Semiconductor Corporation The block diagram below describes the LM95241 SensorEval 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 this particular board ...

Page 5

... The next screen (first screen after the first run of the program) will look like this: Select the LM95241 Evaluation Board. Click OK. © Copyright 2005 National Semiconductor Corporation 5. The next screen will look like this: Select “Read Cont” to read the temperature continuously. ...

Page 6

... TruTherm controls the user can experiment with their effects on the temperature readings. . © Copyright 2005 National Semiconductor Corporation 8. If the user clicks on the Start Plot button a graph box will appear and will graph the temperature. An example is shown below 6 www ...

Page 7

... Quick Start Diagram Important! NO EXTERNAL POWER SUPPLY OR SIGNAL INPUTS ARE REQUIRED! USB Cable to Computer Computer with SensorEval software loaded © Copyright 2005 National Semiconductor Corporation National Semiconductor LM95231 Evaluation Board Rev USB LM95241 Socket Area not used for Eval Board. ...

Page 8

... Do not apply any external power or signals to any of the pins on these headers! © Copyright 2005 National Semiconductor Corporation Power to the LM95241 Evaluation Board is taken from the USB 5-Volt line. This +5 VDC is the input to the on-board LM2950 low dropout voltage regulator, which regulates the output voltage to +3.3 VDC ...

Page 9

... The installation process will put an icon on the PC desktop so that the SensorEval program will run when the icon is double-clicked. © Copyright 2005 National Semiconductor Corporation 4.2 Operation Follow the following procedure for operation the LM95241 Evaluation Board using the SensorEval software: 1. Run the SensorEval program by either double- ...

Page 10

... Q6 C26 HEADER 4x3 HEADER 4x3 MMBT3904/SOT Page Pages of the Schematic of the LM95241 Evaluation Board © Copyright 2005 National Semiconductor Corporation +5.0 ± 0.1 V, 100 mA max. Use a 100 pF capacitor for each +3.3 V pin of U4, and U4S. Place 100 pF closest to the pin. VDD_S ...

Page 11

... AT24C02-10SI-2 Vcc 1.5K 1. SCL 4 5 Vss SDA SMBus Connection Page Pages of the Schematic of the LM95241 Evaluation Board © Copyright 2005 National Semiconductor Corporation C5 C6 0.1uF + 3.3VDC R1 100k C13 0.1uF 28 RESET# 24 USBD- 25 USBD+ 18 DISCON# 12 CLKOUT C14 0.1uF SCL 2 SCL SDA 3 SDA ...

Page 12

... Evaluation Board Layout Figure 5.3 Layout diagram of the LM95241 Evaluation Board © Copyright 2005 National Semiconductor Corporation LM95241 LM95241 LM95241 (Note: socket and socket area not stuffed.) 12 www.national.com ...

Page 13

... NOT STUFF C21, C22, C25, C26, C27, C28, C29, C30, J5, J6, Q4, Q5, Q6, C16, C18 © Copyright 2005 National Semiconductor Corporation Part Capacitor, SMD, ceramic, 0.1uF Capacitor, SMD, ceramic Capacitor, SMD, ceramic, 2.2 uF Capacitor, SMD, ceramic Capacitor, SMD, ceramic, 100 pF Capacitor, SMD, ceramic, 100 pF ...

Page 14

... Operating Mechanical and Environmental Specifications Minimum Temperature 5.4.2 Evaluation Board Basic 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 © Copyright 2005 National Semiconductor Corporation Typical 0°C 25° ...

Page 15

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9- 111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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