1FEATURES
2345• ΣΔ ADC Architecture
• Monitors 9 Power Supplies
• Monitors 4 Remote Thermal Diodes and 2
LM60
• New TruTherm Technology Support for
Precision Thermal Diode Measurements
• Internal Ambient Temperature Sensing
• Programmable Autonomous Fan Control
Based on Temperature Readings with Fan Boost Support
• Fan Boost Support on Tachometer Limit Error
Event
• Fan Control Based on 13-step Lookup Table or
PI Control Loop or Combination of Both
• PI Fan Control Loop Supports Tcontrol
• Temperature Reading Digital Filters
• 0.5°C Digital Temperature Sensor Resolution
• 0.0625°C Filtered Temperature Resolution for
Fan Control
• 2 PWM Fan Speed Control Outputs
• 4 Fan Tachometer Inputs
• Processor Thermal Throttling (PROCHOT)
Monitoring
• Dynamic VID Monitoring (6/7 VIDs per
processor) Supports VRD10.2/11
• 8 General Purpose I/Os:
– 4 Can be Configured as Fan Tachometer
Inputs
– 2 Can be Configured to Connect to
Processor THERMTRIP
– 2 are Standard GPIOs that Could be Used subto
Monitor IERR Signal
• A General Purpose Inputs That can be Used to
Monitor the 7th VID Signal for VRD11
• Limit Register Comparisons of all Monitored
Values
• 2-wire Serial Digital Interface, SMBus 2.0
Compliant
– Supports Byte/block Read and Write
– Selectable Slave Address (Tri-level Pin
Selects 1 of 3 Possible Addresses)
– ALERT Output Supports Interrupt or
Comparator Modes
• WQFN-48 Package
• XOR-tree Test Mode

APPLICATIONS
• Servers
• Workstations
• Processor based equipment

KEY SPECIFICATIONS
• Voltage Measurement Accuracy: ±2% FS (max)
• Temperature Resolution: 9-bits, 0.5°C
• Temperature Sensor Accuracy: ±2.5 °C (max)
• Temperature Range:
– LM96194 Operational: -40°C to +85°C
– Remote Temp Accuracy: -40°C to +125°C
• Power Supply Voltage: +3.0V to +3.6V
• Power Supply Current: 1.6 mA

DESCRIPTION
The LM96194 hardware monitor has a two wire digital
interface compatible with SMBus 2.0. Using a ΣΔ
ADC, the LM96194 measures the temperature of four
remote diode connected transistors as well as its own
die and 9 power supply voltages. The LM96194 has
new TruTherm technology that supports precision
thermal diode measurements of processors on subto
micron processes.