LM95231CIMM/NOPB

Obsolete

Texas Instruments

TEMPERATURE SENSOR DIGITAL SERIAL (2-WIRE, I2C, SMBUS) 8-PIN VSSOP T/R

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LM95231CIMM/NOPB

Obsolete

Texas Instruments

TEMPERATURE SENSOR DIGITAL SERIAL (2-WIRE, I2C, SMBUS) 8-PIN VSSOP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM95231 Series

The LM95231 is a precision dual remote diode temperature sensor (RDTS) that uses Texas Instruments’ TruTherm technology. The 2-wire serial interface of the LM95231 is compatible with SMBus 2.0. The LM95231 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95231 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a "thermal diode" as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of "thermal diodes" found on small geometry processes, 90nm and below. The LM95231 supports user selectable thermal diode non-ideality of either a Pentium 4 processor on 90nm process or 2N3904.

The LM95231 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95231 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

Technical Specifications

Parameters and characteristics for this part

Specification	LM95231CIMM/NOPB

Accuracy - Highest (Lowest)	3 °C
Features	Shutdown Mode, One-Shot, Standby Mode, Programmable Resolution
Mounting Type	Surface Mount
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	0 °C
Output Type	SMBus
Package Length	0.118 in
Package Name	8-TSSOP, 8-MSOP, 8-VSSOP
Package Width	3 mm
Resolution (Local)	9 b
Resolution (Remote)	12 b
Sensing Temperature - Local (Max)	85 °C
Sensing Temperature - Local (Min)	0 °C
Sensing Temperature - Remote (Max)	85 °C
Sensing Temperature - Remote (Min)	0 °C
Sensor Type	Digital, Local/Remote
Test Condition (Max)	85 °C
Test Condition (Min)	0 °C
Voltage - Supply (Maximum)	3.6 V
Voltage - Supply (Minimum)	3 V

LM95231 Series

Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface

Part	Mounting Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Package Name	Sensing Temperature - Local (Max)	Test Condition (Max)	Sensing Temperature - Remote (Max)	Resolution (Local)	Resolution (Remote)	Operating Temperature (Max)	Sensor Type	Accuracy - Highest (Lowest)	Output Type	Package Width	Package Length	Features
Texas Instruments LM95231CIMM-2	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231CIMM-2/NOPB	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231CIMM	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231BIMMX	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231CIMM-2	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	85 °C	Digital Local/Remote	3 °C	2-Wire Serial I2C SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231BIMMX/NOPB	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231BIMM-1	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231BIMM-2	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231CIMM-1/NOPB	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode
Texas Instruments LM95231BIMM-2	Surface Mount	3.6 V	3 V	8-TSSOP 8-MSOP 8-VSSOP	85 °C	85 °C	85 °C	9 b	12 b	125 °C	Digital Local/Remote	3 °C	SMBus	3 mm	0.118 in	One-Shot Programmable Resolution Shutdown Mode Standby Mode

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