LM95241EB National Semiconductor, LM95241EB Datasheet
LM95241EB
Specifications of LM95241EB
Related parts for LM95241EB
LM95241EB Summary of contents
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... On-board local temperature sensing Connection Diagram I2C ® registered trademark of Phillips Corporation. © 2011 National Semiconductor Corporation LM95241 ■ Remote temperature readings without digital filtering: 0.125 °C LSb 10-bits plus sign or 11-bits programmable resolution 11-bits resolves temperatures above 127 °C ■ ...
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Ordering Information Package Part Number Marking LM95241CIMM T28C LM95241CIMMX T28C LM95241CIMM-1 T29C LM95241CIMMX-1 T29C LM95241CIMM-2 T30C LM95241CIMMX-2 T30C Pin Descriptions Label Pin # D1+ 1 D1− 2 D2+ 3 D2− 4 GND SMBDAT 7 SMBCLK 8 ...
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Simplified Block Diagram Typical Application 3 20199701 20199703 www.national.com ...
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Absolute Maximum Ratings Supply Voltage Voltage at SMBDAT, SMBCLK Voltage at Other Pins Input Current at All Pins (Note 2) Package Input Current (Note 2) SMBDAT Output Sink Current Junction Temperature (Note 3) Storage Temperature ESD Susceptibility (Note 4) Human ...
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Logic Electrical Characteristics Digital DC Characteristics Unless otherwise noted, these specifications apply for V all other limits =+25°C, unless otherwise noted Symbol Parameter SMBDAT, SMBCLK INPUTS V Logical “1” Input Voltage IN(1) V Logical “0”Input ...
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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is guaranteed to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test ...
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Typical Performance Characteristics Intel Processor on 65nm Process or 90nm Process Thermal Diode Performance Comparison Remote Temperature Reading Sensitivity to Thermal Diode Filter Capacitance Thermal Diode Capacitor or PCB Leakage Current Effect Remote Diode Temperature Reading 20199704 Conversion Rate Effect ...
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Functional Description The LM95241 is a digital sensor that can sense the temper- ature of 3 thermal zones using a sigma-delta analog-to-digital converter. It can measure its local die temperature and the temperature of two external transistor junctions using ...
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SMBus INTERFACE The LM95241 operates as a slave on the SMBus, so the SMBCLK line is an input and the SMBDAT line is bidirectional. The LM95241 never drives the SMBCLK line and it does not support clock stretching. According ...
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DIODE FAULT DETECTION The LM95241 is equipped with operational circuitry designed to detect fault conditions concerning the remote diodes. In the event that the D+ pin is detected as shorted to GND, D− floating, the ...
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Serial Bus byte Read from a Register with the internal Command Register preset to desired value. (d) Serial Bus Write followed by a Repeat Start and Immediate Read FIGURE 2. SMBus Timing Diagrams for Access of Data 1.8 SERIAL ...
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LM95241 Registers Command register selects which registers will be read from or written to. Data for this register should be transmitted during the Command Byte of the SMBus write communication. P0-P7: Command Command Name Status Register Configuration Register Remote ...
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STATUS REGISTER (Read Only Address 02h Busy 0 Bits Name 7 Busy 6-4 Reserved 3 Remote 2 TruTherm Mode Enabled (R2TME) 2 Remote 1 TruTherm Mode Enabled (R1TME) 1 Remote Diode 2 Missing (RD2M) 0 Remote Diode ...
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REMOTE DIODE FILTER CONTROL REGISTER (Read/write Address 06h Bits Name 7-3 Reserved 2 Remote 2 Filter Enable (R2FE) 1 Reserved 0 Remote 1Filter Enable (R1FE) Power up default is 05h. 2.4 REMOTE DIODE MODEL TYPE ...
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REMOTE DIODE TruTherm MODE CONTROL (Read/Write Address 07h Reserved R2M2 R2M1 Bits Description 7 Reserved 6-4 R2M2:R2M0 3 Reserved 2-0 R1M2:R1M0 Power up default is 01h. 2.6 LOCAL AND REMOTE MSB AND LSB TEMPERATURE REGISTERS (Read ...
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Temperature Data: LSb = 1°C. (Read Only Address 21, 22h) 10-bit plus sign or 11-bit unsigned binary formats with filter off: BIT Value Temperature Data: LSb = 0.125°C or 1/8°C. 12-bit plus sign or 13-bit unsigned binary formats with filter ...
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Applications Hints The LM95241 can be applied easily in the same way as other integrated-circuit temperature sensors, and its remote diode sensing capability allows used in new ways as well. It can be soldered to a ...
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... Compensating for Different Non-Ideality In order to compensate for the errors introduced by non-ide- ality, the temperature sensor is calibrated for a particular processor. National Semiconductor temperature sensors are always calibrated to the typical non-ideality and series resis- tance of a given processor type. The LM95241 is calibrated ...
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AMD Athlon processor, with a typical non-ideality of 1.008, for a temperature range of 60 °C to 100 °C the correction factor would calculate to: T =[(1.003−1.008)÷1.003]×(80+273) =−1.75°C CF Therefore, 1.75°C should be subtracted from the ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Lead Molded Mini-Small-Outline Package (MSOP), JEDEC Registration Number MO-187 Order Number LM95241CIMM or LM95241CIMMX NS Package Number MUA08A 20 ...
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Notes 21 www.national.com ...
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