1FEATURES
2• 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

APPLICATIONS
• Communications Infrastructure
• System Thermal and Hardware Monitoring for
Servers
• Electronic Test Equipment and
Instrumentation
• Office Electronics

KEY SPECIFICATIONS
• Total Unadjusted Error ±1 %FS (Max)
• Differential Non-Linearity ±1 Lsb (Max)
• Supply Voltage Range +3.0 V to +5.5 V
• Supply Current (Operating) 0.370 mA Typ
• Supply Current (Shutdown) 0.330 mA Typ
• ADC Resolution 10 Bits
• Temperature Resolution 0.5°C/0.0625°C
• Temperature Accuracy ±3°C (Max)

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 ensured
over the temperature range of (−40)°C ≤ TA ≤
+125°C. The LM96080 is available in a 24-pin
TSSOP package.