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LM94

활성

베타 보상, 팬 제어, 하드웨어 및 공급 mtr을 갖춘 ±2°C 쿼드 원격 및 로컬 온도 센서(TSSOP)

지금 주문
데이터시트

LM94

활성
데이터시트 지금 주문

제품 상세 정보

Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 100 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 1600 Temp resolution (max) (Bits) 8 Remote channels (#) 4 Addresses 3 Rating Catalog
Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 100 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 1600 Temp resolution (max) (Bits) 8 Remote channels (#) 4 Addresses 3 Rating Catalog
TSSOP (DGG) 56 113.4 mm² 14 x 8.1
  • 8-bit ΣΔ ADC
  • Monitors 16 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
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual 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
  • 2 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
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP 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:
    • LM94 Operational ... 0°C to +85°C
    • Remote Temp Accuracy ... 0°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.

  • 8-bit ΣΔ ADC
  • Monitors 16 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
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual 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
  • 2 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
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP 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:
    • LM94 Operational ... 0°C to +85°C
    • Remote Temp Accuracy ... 0°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.

The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using a ΣΔ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages. The LM94 has new TruTherm technology that supports precision thermal diode measurements of processors on sub-micron processes.

Description (continued)
To set fan speed, the LM94 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 LM94 includes digital filters that can be invoked to smooth temperature readings for better control of fan speed such that acoustical noise is minimized. The LM94 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM94 builds upon the functionality of previous motherboard server management ASICs, such as the LM93. It also adds measurement and control support for dynamic Vccp monitoring for VRD10/11 and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using a ΣΔ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages. The LM94 has new TruTherm technology that supports precision thermal diode measurements of processors on sub-micron processes.

Description (continued)
To set fan speed, the LM94 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 LM94 includes digital filters that can be invoked to smooth temperature readings for better control of fan speed such that acoustical noise is minimized. The LM94 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM94 builds upon the functionality of previous motherboard server management ASICs, such as the LM93. It also adds measurement and control support for dynamic Vccp monitoring for VRD10/11 and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

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기술 문서

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모두 보기1
유형 직함 날짜
* Data sheet LM94 TruTherm Hardware Monitor with PI Loop Fan Control for Server Management datasheet (Rev. C) 2013/03/22

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

드라이버 또는 라이브러리

LM93SW-LINUX — LM93용 Linux 드라이버

The Linux driver supports the LM93 series of Hardware Monitors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • lm93
  • lm94
Linux (...)
옵션 보기
패키지 핀 다운로드
TSSOP (DGG) 56 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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