LM95241 具有 SMBus 接口和 TruTherm 技术 (65nm/90nm) 的双路远程二极管温度传感器

The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses National's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 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 such as 90nm and 65nm.

	LM95241
Temp Resolution (Max) (bits)	13
Supply Voltage (Min) (V)	3
Supply Voltage (Max) (V)	3.6
Iq (Typ) (uA)	471
Interface	2-Wire Serial
Sensor Type	Remote + Local
Remote Channel	2
Remote Sensor Correction	Beta Compensation
Remote Sensor Accuracy (Max) (+/- C)	1.25
Local Sensor Accuracy (Max) (+/- C)	3
Pin/Package	8VSSOP
Approx. Price (US$)	0.70 \| 1ku
Rating	Catalog

LM95241 特性

Accurately senses die temperature of remote ICs or diode junctions
Uses TruTherm technology for precision “thermal diode” temperature measurement
Thermal diode input stage with analog filtering
Thermal diode digital filtering
Intel processor on 65nm or 90nm process or 2N3904 non-ideality selection
Remote diode fault detection
On-board local temperature sensing
Remote temperature readings without digital filtering:
0.125 °C LSb
10-bits plus sign or 11-bits programmable resolution
11-bits resolves temperatures above 127 °C
Remote temperature readings with digital filtering:
0.03125 °C LSb with filtering
12-bits plus sign or 13-bits programmable resolution
13-bits resolves temperatures above 127 °C
Local temperature readings:
0.25 °C
9-bits plus sign
Status register support
Programmable conversion rate allows user optimization of power consumption

LM95241 器件用途

Processor/Computer System Thermal Management

(e.g. Laptop, Desktop, Workstations, Server)
Electronic Test Equipment
Office Electronics