LM95241CIMM-1/NOPB National Semiconductor, LM95241CIMM-1/NOPB Datasheet
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LM95241CIMM-1/NOPB
Specifications of LM95241CIMM-1/NOPB
LM95241CIMM-1TR
Related parts for LM95241CIMM-1/NOPB
LM95241CIMM-1/NOPB 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 www.national.com NS Package Number MUA08A (MSOP-8) 1000 Units on Tape and Reel MUA08A (MSOP-8) ...
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Simplified Block Diagram Typical Application 3 20199701 20199703 www.national.com ...
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... DD Operating Ratings ± (Note Operating Temperature Range +125°C Electrical Characteristics Temperature Range −65°C to +150°C LM95241CIMM Supply Voltage Range (V 2000 V 200 V =+3.0Vdc to 3.6Vdc. Boldface limits apply for T DD =+25°C, unless otherwise noted the junction temperature of the LM95241 Conditions T = 0°C to +85°C, ...
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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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... LM95241 and the thermal resistance. See Note 9: The accuracy of the LM95241CIMM is guaranteed when using a typical thermal diode of an Intel processor process or an MMBT3904 diode- connected transistor, as selected in the Remote Diode Model Select register. See typical performance curve for performance with Intel processor on a 90nm process ...
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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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... LM95241CIMM LM95241CIMM LM95241CIMM 1.4 TEMPERATURE DATA FORMAT Temperature data can only be read from the Local and Re- mote Temperature registers . Remote temperature data with the digital filter off is repre- sented by an 11-bit, two's complement word or unsigned binary word with an LSb (Least Significant Bit) equal to 0.125° ...
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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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