LM95233 Series

±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface

Catalog

±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Sensing Temperature - Local [Max]	Sensing Temperature - Local [Min]	Package / Case	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Features	Resolution	Mounting Type	Accuracy - Highest (Lowest)	Sensing Temperature - Remote [Max]	Sensing Temperature - Remote [Min]	Test Condition [Min]	Test Condition [Max]	Utilized IC / Part	Sensing Range [Max]	Sensing Range [Min]	Sensitivity	Interface	Supplied Contents	Sensor Type
Texas Instruments LM95233CISD/NOPB	3.6 V	3 V	14-WSON (4x4)	125 °C	-40 °C	14-WFDFN Exposed Pad	SMBus	140 °C	-40 °C	One-Shot Output Switch Programmable Limit Shutdown Mode Standby Mode	10 b	Surface Mount	2 °C	125 °C	-40 °C	-40 °C	125 °C
Texas Instruments LM95233CISDX/NOPB	3.6 V	3 V	14-WSON (4x4)	125 °C	-40 °C	14-WFDFN Exposed Pad	SMBus	140 °C	-40 °C	One-Shot Output Switch Programmable Limit Shutdown Mode Standby Mode	10 b	Surface Mount	2 °C	125 °C	-40 °C	-40 °C	125 °C
Texas Instruments LM95233EB/NOPB	3.6 V	3 V																LM95233	140 °C	-40 °C	1 °C	SMBus	Board(s)	Temperature

Catalog

±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface

Key Features

• Accurately Senses Die Temperature of 2 Remote ICs or Diode Junctions and Local TemperatureTruTherm BJT Beta Compensation Technology Accurately Senses Sub-Micron Process Thermal Diodes0.125°C LSb Temperature Resolution0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled+127.875°C/–128°C and 0°C/255°C Remote RangesProgrammable Digital Filters and Analog Front End FilterRemote Diode Fault Detection, Model Selection and Offset CorrectionMask and Status Register Support3 ProgrammableTCRITOutputs with Programmable Shared HysteresisProgrammable Conversion Rate and Shutdown Mode One-Shot Conversion ControlSMBus 2.0 Compatible Interface, Supports TIMEOUTThree-Level Address Pin14-Pin WSON PackageKey SpecificationsLocal Temperature Accuracy: ±2.0 °C (max)Remote Diode Temperature Accuracy: ±0.875 °C (max)Supply Voltage: 3.0 to 3.6 VAverage Supply Current (1Hz conversion rate): 0.57 mA (typ)TruTherm is a trademark of Texas Instruments. All trademarks are the property of their respective owners.Accurately Senses Die Temperature of 2 Remote ICs or Diode Junctions and Local TemperatureTruTherm BJT Beta Compensation Technology Accurately Senses Sub-Micron Process Thermal Diodes0.125°C LSb Temperature Resolution0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled+127.875°C/–128°C and 0°C/255°C Remote RangesProgrammable Digital Filters and Analog Front End FilterRemote Diode Fault Detection, Model Selection and Offset CorrectionMask and Status Register Support3 ProgrammableTCRITOutputs with Programmable Shared HysteresisProgrammable Conversion Rate and Shutdown Mode One-Shot Conversion ControlSMBus 2.0 Compatible Interface, Supports TIMEOUTThree-Level Address Pin14-Pin WSON PackageKey SpecificationsLocal Temperature Accuracy: ±2.0 °C (max)Remote Diode Temperature Accuracy: ±0.875 °C (max)Supply Voltage: 3.0 to 3.6 VAverage Supply Current (1Hz conversion rate): 0.57 mA (typ)TruTherm is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

Description

LM95233 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can monitor the temperature of two remote diodes as well as its own temperature. The LM95233 can be used to very accurately monitor the temperature of up to two external devices such as microprocessors, graphics processors or diode-connected 2N3904s. The LM95233's TruTherm BJT beta compensation technology allows sensing of 90nm or 65nm process thermal diodes accurately. The LM95233 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95233TCRIT1,TCRIT2andTCRIT3outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of theTCRIT1,TCRIT2andTCRIT3pins can be read back from the status registers. Mask registers are available for further control of theTCRIToutputs. LM95233's remote temperature channels have programmable digital filters to minimize unwantedTCRITevents when temperature spikes are encountered. For optimum flexibility and accuracy each LM95233 channel includes, registers for sub-micron process or 2N3904 diode model selection as well as offset correction. A three level address pin allows connection of up to 3 LM95233s to the same SMBus master. The LM95233 includes power saving functions such as: programmable conversion rate, shutdown mode, and turn off of unused channels. LM95233 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can monitor the temperature of two remote diodes as well as its own temperature. The LM95233 can be used to very accurately monitor the temperature of up to two external devices such as microprocessors, graphics processors or diode-connected 2N3904s. The LM95233's TruTherm BJT beta compensation technology allows sensing of 90nm or 65nm process thermal diodes accurately. The LM95233 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95233TCRIT1,TCRIT2andTCRIT3outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of theTCRIT1,TCRIT2andTCRIT3pins can be read back from the status registers. Mask registers are available for further control of theTCRIToutputs. LM95233's remote temperature channels have programmable digital filters to minimize unwantedTCRITevents when temperature spikes are encountered. For optimum flexibility and accuracy each LM95233 channel includes, registers for sub-micron process or 2N3904 diode model selection as well as offset correction. A three level address pin allows connection of up to 3 LM95233s to the same SMBus master. The LM95233 includes power saving functions such as: programmable conversion rate, shutdown mode, and turn off of unused channels.