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LM95235

National Semiconductor
Part Number LM95235
Manufacturer National Semiconductor
Description Precision Remote Diode Temperature Sensor
Published Oct 11, 2006
Detailed Description www.DataSheet4U.com LM95235 Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology May...
Datasheet PDF File LM95235 PDF File

LM95235
LM95235

Overview
www.
DataSheet4U.
com LM95235 Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology May 2006 LM95235 Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm™ Technology General Description The LM95235 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and TruTherm technology that can monitor the temperature of a remote diode as well as its own temperature.
The LM95235 can be used to very accurately monitor the temperature of external devices such as microprocessors, graphics processors, or a diode-connected MMBT3904 transistor.
TruTherm technology allows the LM95235 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes.
LM95235 reports temperature in two different formats for +127.
875˚C/-128˚C range and 0˚C/255˚C range.
The LM95235 T_CRIT and OS outputs are asserted when either unmasked channel exceeds its programmed 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 T_CRIT and OS pins can be read back from the status registers via the SMBus interface.
All limits have a shared programmable hysteresis register.
n n n n n n n n n n n n Two Formats: −128˚C to +127.
875˚C and 0˚C to 255˚C Digital filter for remote channel Programmable TCRIT and OS thresholds Programmable shared hysteresis register Diode Fault Detection Mask, Offset, and Status Registers SMBus 2.
0 compatible interface, supports TIMEOUT Programmable conversion rate for best power consumption Three-level address pin Standby mode one-shot conversion control Pin-for-pin compatible with the LM86/LM89 8-pin MSOP package Key Specifications j Supply Voltage j Supply Current, Conv.
Rate = 1 Hz 3.
0 V to 3.
6 V 350 µA (typ) j Remote Diode Temperature Accuracy The remote temperature channel of the LM95235 has a programmable digital filter.
The LM95235 contains a diode TA = 25˚C to 85˚C; TD = 60˚C to 1...


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