LM95231CIMM-2/NOPB
ActiveDUAL REMOTE AND LOCAL TEMPERATURE SENSOR WITH TRUTHERM TECHNOLOGY AND SMBUS INTERFACE
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LM95231CIMM-2/NOPB
ActiveDUAL REMOTE AND LOCAL TEMPERATURE SENSOR WITH TRUTHERM TECHNOLOGY AND SMBUS INTERFACE
Technical Specifications
Parameters and characteristics for this part
| Specification | LM95231CIMM-2/NOPB |
|---|---|
| Accuracy - Highest (Lowest) | 3 °C |
| Features | Standby Mode, Programmable Resolution, One-Shot, Shutdown Mode |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | 0 °C |
| Output Type | SMBus |
| Package / Case | 8-MSOP, 8-TSSOP |
| Package / Case | 3 mm |
| Package / Case [custom] | 0.118 in |
| Resolution | 12 b, 9 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 |
| Test Condition [Max] | 85 °C |
| Test Condition [Min] | 0 °C |
| Voltage - Supply [Max] | 3.6 V |
| Voltage - Supply [Min] | 3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.22 | |
| 10 | $ 1.81 | |||
| 25 | $ 1.47 | |||
| 50 | $ 1.36 | |||
| 100 | $ 1.30 | |||
| 500 | $ 1.20 | |||
| Digi-Reel® | 1 | $ 2.22 | ||
| 10 | $ 1.81 | |||
| 25 | $ 1.47 | |||
| 50 | $ 1.36 | |||
| 100 | $ 1.30 | |||
| 500 | $ 1.20 | |||
| Tape & Reel (TR) | 1000 | $ 1.04 | ||
| Texas Instruments | SMALL T&R | 1 | $ 1.87 | |
| 100 | $ 1.55 | |||
| 250 | $ 1.11 | |||
| 1000 | $ 0.84 | |||
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.
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.
Documents
Technical documentation and resources
