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LM95233

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

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

LM95233

ACTIVE
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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 2 Operating temperature range (C) -40 to 140 Supply voltage (Min) (V) 3 Supply voltage (Max) (V) 3.6 Device type Remote Interface I2C, SMBus, 2-Wire Supply current (Max) (uA) 500 Temp resolution (Max) (bits) 11 Features One-shot conversion, ALERT Remote channels (#) 2 Addresses 3 Rating Catalog Approx. price (US$) 0.84 | 1ku open-in-new Find other Digital temperature sensors

Package | Pins | Size

WSON (NHL) 14 16 mm² 4 x 4 open-in-new Find other Digital temperature sensors

Features

  • 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.

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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 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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No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet Dual Remote Diode and Local Temp Sensor w/SMBus I/F and TruTherm Technology datasheet (Rev. E) Mar. 22, 2013
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$1,999.00
Description

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 (...)

Features

  • 12-bit 4GSPS ADC - ADC12J4000
  • 8GHz Fully Differential Amplifier - LMH5401
  • 4.8 GHz Low Phase Noise PLL/VCO TRF3765
  • Clock Jitter Cleaner LMK04828
  • Complete TI Power Solution
  • 2GHz Butterworth Low Pass Filter Design

View details

Software development

DRIVERS & LIBRARIES Download
Linux Driver for LM95234
LM95234SW-LINUX — 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:
  • (...)
DRIVERS & LIBRARIES Download
Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SENSOREVAL — 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 (...)

Reference designs

REFERENCE DESIGNS Download
Scalable 20.8 GSPS reference design for 12 bit digitizers
TIDA-010128 — This reference design describes a 20.8 GSPS sampling system using RF sampling analog-to-digital converters (ADCs) in time interleaved configuration. Time interleaving method is a proven and traditional way of increasing sample rate, however, matching individual ADCs offset, gain and sampling time (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference design synchronizing data converter DDC and NCO features for multi-channel RF systems
TIDA-010122 — This reference design provides the solution for synchronization design challenges associated with emerging 5G adapted applications like massive multiple input multiple output (mMIMO), phase array RADAR and communication payload. The typical RF front end contains antenna, low noise amplifier (LNA (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12.8-GSPS analog front end reference design for high-speed oscilloscope and wide-band digitizer
TIDA-01028 — This reference design provides a practical example of interleaved RF-sampling analog-to-digital converters (ADCs) to achieve a 12.8-GSPS sampling rate. This is achieved by time-terleaving two RF-sampling ADCs. Interleaving requires a phase shift between the ADCs, which this reference design achieves (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Low noise power-supply reference design maximizing performance in 12.8 GSPS data acquisition systems
TIDA-01027 — This reference design demonstrates an efficient, low noise 5-rail power-supply design for very high-speed DAQ systems capable of > 12.8 GSPS. The power supply DC/DC converters are frequency synchronized and phase-shifted in order to minimize input current ripple and control frequency content (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Multichannel RF transceiver clocking reference design for RADARs and wireless 5G testers
TIDA-010131 — Analog front end for high-speed end equipments like phased-array radars, wireless communication testers, and electronic warfare require synchronized, multipletransceiver signal chains. Each transceiver signal chain includes high-speed, analog-to-digital converters (ADCs), digital-to-analog (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Direct RF-Sampling Radar Receiver for L-, S-, C-, and X-Band Using ADC12DJ3200 Reference Design
TIDA-01442 — The TIDA-01442 reference design utilizes the ADC12DJ3200 evaluation module (EVM) to demonstrate a direct RF-sampling receiver for a radar operating in HF, VHF, UHF, L-, S-, C-, and part of X-band. The wide analog input bandwidth and high sampling rate (6.4 GSPS) of the analog-to-digital (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Channel Count JESD204B Clock Generation Reference Design for RADAR and 5G Wireless Testers
TIDA-01023 — High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports high channel count JESD204B synchronized clocks using one master and multiple (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Channel Count JESD204B Daisy Chain Clock Reference Design for RADAR and 5G Wireless Testers
TIDA-01024 — High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports scaling up JESD204B synchronized clocks in daisy chain configuration. This (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Flexible 3.2-GSPS multi-channel AFE reference design for DSOs, radar and 5G wireless test systems
TIDA-01022 — This high speed multi-channel data capture reference design enables optimum system performance. System designers needs to consider critical design parameters like clock jitter and skew for high speed multi-channel clock generation, which affects overall system SNR, SFDR, channel to channel skew and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
RF Sampling 4-GSPS ADC Reference Design with 8-GHz DC-Coupled Differential Amplifier
TIDA-00431 — Wideband radio frequency (RF) receivers allow greatly increased flexibility in radio designs. The wide instantaneous bandwidth allows flexible tuning without changing hardware and the ability to capture multiple channels at widely separated frequencies.

This reference design describes a wideband RF (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
50-Ohm 2-GHz Oscilloscope Front-end Reference Design
TIDA-00826 — This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
document-generic Schematic document-generic User guide

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Training series

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Videos

TI Precision Labs - Temperature Sensors: Interchangeability

This section of the TI Precision Labs - Temperature Sensors series explains considerations in sensor interchangeability.

Posted: 18-Jan-2019
Duration: 06:24

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