Rainbow-electronics LM95221 User Manual

LM95221Dual Remote Diode Digital Temperature Sensor withSMBus InterfaceGeneral DescriptionThe LM95221 is a dual remote diode temperature sensor inan 8

1.0 Functional Description (Continued)20094310(a) Serial Bus Write to the internal Command Register followed by a the Data Byte20094311(b) Serial Bus

1.0 Functional Description (Continued)1.8 SERIAL INTERFACE RESETIn the event that the SMBus Master is RESET while theLM95221 is transmitting on the SM

2.0 LM95221 Registers (Continued)2.1 STATUS REGISTER(Read Only Address 02h):D7 D6 D5 D4 D3 D2 D1 D0Busy Reserved RD2M RD1M00000Bits Name Description7

2.0 LM95221 Registers (Continued)2.3 LOCAL and REMOTE MSB and LSB TEMPERATURE REGISTERSLocal Temperature MSB(Read Only Address 10h) 9-bit plus sign fo

3.0 Applications HintsThe LM95221 can be applied easily in the same way asother integrated-circuit temperature sensors, and its remotediode sensing ca

3.0 Applications Hints (Continued)3.1.2 Compensating for Diode Non-IdealityIn order to compensate for the errors introduced by non-ideality, the tempe

Physical Dimensions inches (millimeters) unless otherwise noted8-Lead Molded Mini-Small-Outline Package (MSOP),JEDEC Registration Number MO-187Order N

Connection DiagramMSOP-820094302TOP VIEWOrdering InformationPart NumberPackageMarkingNS PackageNumberTransportMediaSMBus DeviceAddressLM95221CIMM LM95

Pin Descriptions (Continued)Label Pin # Function Typical ConnectionSMBDAT 7 SMBus Bi-Directional DataLine, Open-Drain OutputFrom and to Controller; ma

Absolute Maximum Ratings (Note 1)Supply Voltage −0.3 V to 6.0 VVoltage at SMBDAT, SMBCLK −0.5V to 6.0VVoltage at Other Pins −0.3 V to (VDD+ 0.3 V)D− I

Logic Electrical CharacteristicsDIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for VDD=+3.0 to 3.6 Vdc. Boldface lim-it

SMBus Communication20094309Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specific

Typical Performance CharacteristicsThermal Diode Capacitor or PCB Leakage Current EffectRemote Diode Temperature ReadingRemote Temperature Reading Sen

1.0 Functional Description (Continued)7. Status Register: busy, diode fault8. Configuration Register: resolution control, conversionrate control, stan

1.0 Functional Description (Continued)Temperature Digital OutputBinary Hex−0.25˚C 1111 1111 1100 0000 FFE0h−1˚C 1111 1111 0000 0000 FF00h−25˚C 1110 01