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.