LM96194

ACTIVE

±2°C quad remote and local temperature sensor with beta comp, fan ctrl, hw & supply mtr in a QFN

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Product details

Parameters

Operating temperature range (C) -40 to 100 Vs (Min) (V) 3 Vs (Max) (V) 3.6 Interface type SMBus Rating Catalog open-in-new Find other Signal conditioners

Package | Pins | Size

WQFN (RHS) 48 49 mm² 7 x 7 open-in-new Find other Signal conditioners

Features

  • 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 to 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

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

All trademarks are the property of their respective owners. Intel is a trademark of Texas Instruments.

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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 sub-micron processes.

To set fan speed, the LM96194 has two PWM outputs that are each controlled by up to six temperature zones. The fan-control algorithm can be based on a lookup table, PI (proportional/integral) control loop, or a combination of both. The LM96194 includes digital filters that can be invoked to smooth temperature readings for better control of fan speed such that acoustical noise is minimized. The LM96194 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM96194 includes most of the features of the LM94, dual CPU motherboard server management ASIC, such as measurement and control support for dynamic Vccp monitoring for VRD10/11 and PROCHOT but is targeted for single processor systems.

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Technical documentation

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No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet LM96194 TruTherm HW Monitor w/PI Fan Cntrl for Workstation Mgmt datasheet (Rev. B) Mar. 22, 2013
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Technical articles Make signal conditioning easy with WEBENCH® Interface Designer Jan. 27, 2015
Technical articles Get Connected: Equalization Oct. 15, 2014
Technical articles One part for all: Multi-standard signal conditioners Mar. 07, 2014

Design & development

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WQFN (RHS) 48 View options

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