±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Product details
Parameters
Package | Pins | Size
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.
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.
Technical documentation
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 to select a temperature sensor probe | Feb. 18, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
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
Software development
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
- (...)
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
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (NHL) | 14 | View options |
Ordering & quality
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- Lead finish/Ball material
- MSL rating/Peak reflow
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- Material content
- Qualification summary
- Ongoing reliability monitoring
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