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LM95233CISD Datasheet(PDF) 1 Page - Texas Instruments |
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LM95233CISD Datasheet(HTML) 1 Page - Texas Instruments |
1 / 44 page LM95233 www.ti.com SNIS145E – AUGUST 2006 – REVISED MARCH 2013 LM95233 Dual Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm™ Technology Check for Samples: LM95233 1 FEATURES KEY SPECIFICATIONS 23 • Accurately Senses Die Temperature of 2 • Local Temperature Accuracy: ±2.0 °C (max) Remote ICs or Diode Junctions and Local • Remote Diode Temperature Accuracy: ±0.875 Temperature °C (max) • TruTherm BJT Beta Compensation Technology • Supply Voltage: 3.0 to 3.6 V Accurately Senses Sub-Micron Process • Average Supply Current (1Hz conversion rate): Thermal Diodes 0.57 mA (typ) • 0.125°C LSb Temperature Resolution • 0.03125°C LSb Remote Temperature DESCRIPTION Resolution with Digital Filter Enabled LM95233 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface • +127.875°C/–128°C and 0°C/255°C Remote that can monitor the temperature of two remote Ranges diodes as well as its own temperature. The LM95233 • Programmable Digital Filters and Analog Front can be used to very accurately monitor the End Filter temperature of up to two external devices such as • Remote Diode Fault Detection, Model microprocessors, graphics processors or diode- connected 2N3904s. The LM95233's TruTherm™ Selection and Offset Correction BJT beta compensation technology allows sensing of • Mask and Status Register Support 90nm or 65nm process thermal diodes accurately. • 3 Programmable TCRIT Outputs with The LM95233 reports temperature in two different Programmable Shared Hysteresis formats for +127.875°C/–128°C range and 0°C/255°C • Programmable Conversion Rate and Shutdown range. The LM95233 TCRIT1, TCRIT2 and TCRIT3 Mode One-Shot Conversion Control outputs are triggered when any unmasked channel • SMBus 2.0 Compatible Interface, Supports exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the TIMEOUT system fans or as a microcontroller interrupt function. • Three-Level Address Pin The current status of the TCRIT1, TCRIT2 and • 14-Pin WSON Package TCRIT3 pins can be read back from the status registers. Mask registers are available for further APPLICATIONS control of the TCRIT outputs. LM95233's remote temperature channels have programmable digital • Processor/Computer System Thermal filters to minimize unwanted TCRIT events when Management (e.g. Laptop, Desktop, temperature spikes are encountered. Workstations, Server) For optimum flexibility and accuracy each LM95233 • Electronic Test Equipment channel includes, registers for sub-micron process or • Office Electronics 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. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 TruTherm is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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