Product details

Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 140 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 500 Temp resolution (max) (Bits) 11 Remote channels (#) 2 Addresses 3 Rating Catalog
Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 140 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 500 Temp resolution (max) (Bits) 11 Remote channels (#) 2 Addresses 3 Rating Catalog
WSON (NHL) 14 16 mm² 4 x 4
  • Accurately Senses Die Temperature of 2 Remote ICs or Diode Junctions and Local Temperature
  • TruTherm BJT Beta Compensation Technology Accurately Senses Sub-Micron Process Thermal Diodes
  • 0.125°C LSb Temperature Resolution
  • 0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled
  • +127.875°C/–128°C and 0°C/255°C Remote Ranges
  • Programmable Digital Filters and Analog Front End Filter
  • Remote Diode Fault Detection, Model Selection and Offset Correction
  • Mask and Status Register Support
  • 3 Programmable TCRIT Outputs with Programmable Shared Hysteresis
  • Programmable Conversion Rate and Shutdown Mode One-Shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Three-Level Address Pin
  • 14-Pin WSON Package

Key Specifications

  • Local Temperature Accuracy: ±2.0 °C (max)
  • Remote Diode Temperature Accuracy: ±0.875 °C (max)
  • Supply Voltage: 3.0 to 3.6 V
  • Average 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 Temperature
  • TruTherm BJT Beta Compensation Technology Accurately Senses Sub-Micron Process Thermal Diodes
  • 0.125°C LSb Temperature Resolution
  • 0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled
  • +127.875°C/–128°C and 0°C/255°C Remote Ranges
  • Programmable Digital Filters and Analog Front End Filter
  • Remote Diode Fault Detection, Model Selection and Offset Correction
  • Mask and Status Register Support
  • 3 Programmable TCRIT Outputs with Programmable Shared Hysteresis
  • Programmable Conversion Rate and Shutdown Mode One-Shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Three-Level Address Pin
  • 14-Pin WSON Package

Key Specifications

  • Local Temperature Accuracy: ±2.0 °C (max)
  • Remote Diode Temperature Accuracy: ±0.875 °C (max)
  • Supply Voltage: 3.0 to 3.6 V
  • Average 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.

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 LM95233 TCRIT1, TCRIT2 and TCRIT3 outputs 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 the TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs. LM95233's remote temperature channels have programmable digital filters to minimize unwanted TCRIT events 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 LM95233 TCRIT1, TCRIT2 and TCRIT3 outputs 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 the TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs. LM95233's remote temperature channels have programmable digital filters to minimize unwanted TCRIT events 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.

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Technical documentation

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* Data sheet Dual Remote Diode and Local Temp Sensor w/SMBus I/F and TruTherm Technology datasheet (Rev. E) 22 Mar 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TSW12J54EVM — Wideband RF receiver reference design

RF Sampling 4GSPS ADC with 8GHz DC-Coupled Fully differential Amplifier. Provides a wide bandwidth high performance AC- or DC-coupled capture platform with up to 2 GHz of continous capture bandwidth. Built-in DDC functions enable tuning, down-conversion and bandwidth reduction of captured signals (...)

User guide: PDF
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Driver or library

LM95234SW-LINUX — Linux Driver for LM95234

The Linux driver supports the LM95234 series of Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
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Support software

SENSOREVAL Eval Board Software For Hardware Monitors And Digital Temperature Sensors

SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.

  • Download SensorEval Software and Manual
  • Windows XP support is offered for (...)
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LM63 1 remote and local temperature sensor with fan control LM64 1 remote and local temp sensor with fan control and 5 GPIO's LM71 ±1.5°C Temperature Sensor with SPI Interface LM71-Q1 Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface LM73 ±1°C Temperature Sensor with I2C/SMBus Interface LM75A 2C industry standard temperature sensor, I2C/SMBus interface LM86 ±0.75°C remote and local temperature sensor with SMBus interface LM89 ±0.75°C remote and local temperature sensor with SMBus interface and 2 addresses for bus sharing LM90 Remote and Local Temperature Sensor with SMBus Interface LM93 2 remote, 1 local temp sensor with hardware monitor and 16 power supply voltage monitors LM95010 ±2°C Temperature Sensor with SensorPath Interface LM95071 ±1°C Temperature Sensor with SPI Interface LM95172-Q1 Automotive Grade, ±1°C Temperature Sensor with 200°C Capability and SPI Interface LM95214 ±2°C Quad Remote and Local Temperature Sensor with SMBus Interface LM95221 ±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C LM95231 Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95233 ±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95234 ±2°C Quad Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95235 ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 65/90n LM95235-Q1 Automotive Grade, ±2°C Remote and Local Temperature Sensor with TruTherm Technology and SMBus LM95241 ±1.25°C dual remote & local temperature sensor with beta compensation and SMBus, I LM95245 ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 45nm d LM96000 Hardware monitor with fan control and 6 power supply voltage monitors LM96080 1 local temp sensor with fan speed and power supply voltage monitor LM96163 1 remote and local temp sensor with beta compensation and fan control LM99 Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Precision ADCs
ADC128D818 12-Bit, 82SPS, 8-Ch Delta-Sigma ADC with Temp Sensor, INT / EXT Voltage Reference & I2C Interface

Many TI reference designs include the LM95233

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WSON (NHL) 14 View options

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