- Accurate sensory dead 2 remote IC or diode junctions and local temperature temperature
- TruTherm BJT's beta test point compensation technology accurately detects thermal diodes for submicron processes
- 0.125°C, LSB temperature resolution
- Enable the 0.03125°C LSB digital filter for remote temperature resolution
- 127.875°C/-128°C and 0°C/255°C remote ranges
- Programmable digital filter and analog front-end filter
- Remote diode fault detection, mode selection and offset correction
- Mask and status register support
- Three programmable^ TCRIT outputs are programmable to share hysteresis
- Programmable slew rate and shutdown mode with one-time conversion control
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SMBus 2.0 compatible interface, supported Timeout
- Three levels of address pins
- 14-pin LLP package
illustrate
The LM95233 chip is an 11-bit digital temperature sensor with a two-wire system management bus (SMBus) interface that monitors the temperature of two remote diodes as well as their own temperature. The LM95233 chip can very accurately monitor temperature up to two external devices such as microprocessors, graphics processors, or diodes connected into the 2N3904 series. The LM95233 chip semiconductor's TruTherm BJT's beta test point compensation technology enables accurate thermal diode sensing in 90nm or 65nm processes.
The LM95233 chip reports temperatures in two different formats in the 127.875°C/-128°C temperature range and 0°C/255°C range. LM95233 chip^TCRIT1,^TCRIT2^TCRIT3 output triggers any east window incident channel when its corresponding programmable limit is exceeded, which can be used to shut down the system, turn on the system fan or as an interrupt function of the microcontroller. The ^TCRIT1,^TCRIT2, and ^TCRIT3 pins can be read back from the status register. Shield registers can be used to further control the ^TCRIT output. The LM95233 chip's remote temperature channel programmable digital filter is designed to minimize unnecessary^ TCRIT activity when temperature spikes are encountered.
Each LM95233 chip channel includes a choice of submicron process or 2N3904 diode models for optimal flexibility and accuracy, as well as offset correction registers. A three-level address pin allows up to 3 LM95233s to be connected to the same SMBus master. The LM95233 chip includes power-saving features such as programmable slew rate, shutdown mode, and shutdown of unused channels.
Main specifications
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■ Local temperature accuracy
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± 2.0 °C (max.)
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■ Remote diode temperature accuracy
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± 0.875 °C (max.)
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■ Supply voltage
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is 3.0 V to 3.6 V
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■ Average supply current (1Hz slew rate)
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0.57 mA typical
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apply
- Processor/computer system thermal management
- (e.g. laptops, desktops, workstations, servers)
- Electronic test equipment
- Office electronics
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