Rainbow-electronics LM83 Bedienungsanleitung Seite 1

LM83Triple-Diode Input and Local Digital Temperature Sensorwith Two-Wire InterfaceGeneral DescriptionThe LM83 is a digital temperature sensor with a 2

1.0 Functional Description (Continued)3. Diode 1, Diode 2, and Diode 3 Remote Temperature setto 0˚C until the LM83 senses a diode present betweenthe D

1.0 Functional Description (Continued)1.9 COMMUNICATING with the LM83There are 19 data registers in the LM83, selected by theCommand Register. At powe

1.0 Functional Description (Continued)the serial interface logic if either of the SMBData or SMBCLKlines are held low between 25 ms and 40 ms. TIMEOUT

1.0 Functional Description (Continued)2.0 LM83 REGISTERS2.1 COMMAND REGISTERSelects which registers will be read from or written to. Data for this reg

1.0 Functional Description (Continued)Command Se-lect AddressPower On Default State Register Name Register Function<P7:P0>hex<D7:D0>binary

1.0 Functional Description (Continued)D5: T_CRIT mask for Diode 1, when set to 1 a Diode 1 temperature reading that exceeds T_CRIT setpoint will not a

3.0 SMBus Timing DiagramsDS101058-10(a) Serial Bus Write to the internal Command Register followed by a the Data ByteDS101058-11(b) Serial Bus Write t

4.0 Application HintsThe LM83 can be applied easily in the same way as otherintegrated-circuit temperature sensors, and its remote diodesensing capabi

4.0 Application Hints (Continued)6. Avoid running diode traces close to or parallel to highspeed digital and bus lines. Diode traces should be keptat

4.0 Typical Applications (Continued)DS101058-23Any two or three D+ inputs can be connected in parallel to increase the number of High temperature setp

Connection Diagram Ordering InformationOrderNumberNSPackageNumberTransportMediaLM83CIMQAMQA16A(QSOP-16)95 Units inRailLM83CIMQAXMQA16A(QSOP-16)2500 Un

Physical Dimensions inches (millimeters) unless otherwise notedLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENT

Pin Description (Continued)Label Pin#Function Typical ConnectionD− 4Diode Return CurrentSinkTo all Diode Junction Cathodes using a starconnection to p

Absolute Maximum Ratings (Note 1)Supply Voltage −0.3 V to 6.0 VVoltage at Any Pin −0.3 V to(VCC+ 0.3 V)D− Input Current±1mAInput Current at All Other

Logic Electrical CharacteristicsDIGITAL DC CHARACTERISTICSUnless otherwise noted, these specifications apply for VCC=+3.0 to 3.6 Vdc. Boldface limits

Logic Electrical Characteristics (Continued)SMBus DIGITAL SWITCHING CHARACTERISTICSUnless otherwise noted, these specifications apply for VCC=+3.0 Vdc

Logic Electrical Characteristics (Continued)Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC el

Logic Electrical Characteristics (Continued)Note 6: Typicals are at TA= 25˚C and represent most likely parametric norm.Note 7: Limits are guaranteed t

1.0 Functional Description (Continued)Register flags are updated at the completion of a conversion,which occurs approximately 60 ms after a temperatur