Maker : National Semiconductor
Part No. : LM96080

Datasheet PDF : LM96080.pdf
Cross Reference : LM96080 Cross Reference
Buy Component : LM96080 Find Stock and Price

Shortcut : LM96080 

Product Information

LM96080 System Hardware Monitor with 2-Wire Serial Interface November 3, 2009 LM96080 System Hardware Monitor with 2-Wire Serial Interface General Description LM96080, compatible to LM80, is a hardware monitor that contains a 10-bit delta-sigma ADC capable of measuring 7 positive voltages and local temperature. The LM96080 also measures the speed of two fans and includes other hardware monitoring on an I2C® interface. The LM96080 includes a sequencer that performs WATCHDOG window comparisons of all measured values and its interrupt outputs become active when any values exceed the programmed limits. The LM96080 is especially suited to interface to both linear and digital temperature sensors. The 2.5 mV LSb (least significant bit) and 2.56 volt input range is ideal for accepting inputs from a linear sensor such as the LM94022. The BTI is used as an input from either digital or thermostat sensors such as LM73, LM75, LM56, LM57, LM26, LM27, LM26LV, or other LM96080. The LM96080 supports Standard Mode (Sm, 100 kbits/s) and Fast Mode (Fm, 400 kbits/s) I2C interface modes of operation. LM96080 includes an analog filter on the I2C digital control lines that allows improved noise immunity and supports TIMEOUT reset function on SDA and SCL that prevents I2C bus lockup. Three I2C device address pins allow up to 8 parts on a single bus. The LM96080's 3.0V to 5.5V supply voltage range, low supply current, and I2C interface make it ideal for a wide range of applications. Operation is guaranteed over the temperature range of (−40)°C ≤ TA ≤ +125°C. The LM96080 is available in a 24-pin TSSOP package. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Local Temperature Sensing 7 Positive Voltage Inputs with 10-bit Resolution 2 Programmable Fan Speed Monitoring Inputs 2.5 mV LSb and 2.56V Input Range Chassis Intrusion Detector Input WATCHDOG Comparison of All Monitored Values Separate Input to Show Status in Interrupt Status Register of Additional External Temperature Sensors Such as the LM26/27, LM56/57, LM73, or LM75 I2C Serial Bus Interface Compatibility, Supports Standard Mode, 100 kbits/s, and Fast Mode, 400 kbits/s Shutdown Mode to Minimize Power Consumption Programmable RST_OUT/OS Pin: RST_OUT Provides a Reset Output; OS Provides an Interrupt Output Activated by an Overtemperature Shutdown Event Software and Pin Compatible with the LM80 Key Specifications ■ Total Unadjusted Error ■ Differential Non-Linearity ■ Supply Voltage Range ■ Supply Current (Operating) ■ Supply Current (Shutdown) ■ ADC Resolution ■ Temperature Resolution ■ Temperature Accuracy ±1% FS (max) ±1LSb (max) +3.0V to +5.5V 0.370 mA typ 0.330 mA typ 10 Bits 0.5/0.0625°C ± 3°C (max) Applications ■ Communications Infrastructure ■ System Thermal and Hardware Monitoring for Servers ■ Electronic Test Equipment and Instrumentation www.DataSheet4U.com ■ Office Electronics I2C® is a registered trademark of the Philips Corporation. © 2009 National Semiconductor Corporation 300701 www.national.com LM96080 Typical Application 30070101 www.DataSheet4U.com www.national.com 2 LM96080 Ordering Information Temperature Range (−40)°C ≤ TA ≤ +125°C NS Package Number Specified Power Supply Voltage Connection Diagram Order Number LM96080CIMT NOPB1 LM96080CIMTX NOPB2 Note: 1-Rail 2-Tape Device Marking +3.0V +5.5V LM96080CIMT MTC24B transport media, 61 parts per rail and reel transport media, 2500 parts per reel 30070102 Pin Descriptions Pin Number Pin Name(s) ESD Structure Type Description Interrupt Input Bar. This is an active low input that propagates the INT_IN signal to the INT output of the LM96080. 1 INT_IN Digital Input 2 SDA Digital I/O Serial Bus Bidirectional Data. NMOS open-drain output. 3 SCL Digital Input Serial Bus Clock. www.DataSheet4U.com 4-5 FAN1, FAN2 Digital Inputs Fan tachometer inputs. 6 BTI Digital Input Board Temperature Interrupt driven by Overtemperature Shutdo...

Link URL