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參數(shù)資料
| 型號： | LM94CIMTX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | TruTherTM Hardware Monitor with PI Loop Fan Control for Server Management |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO56 |
| 封裝： | MO-153EE, TSSOP-56 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 693K |
| 代理商： | LM94CIMTX |
LM94
TruTherm
Hardware Monitor with PI Loop Fan Control
for Server Management
1.0 General Description
The LM94 hardware monitor has a two wire digital interface
compatible with SMBus 2.0. Using a
Σ
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 sup-
ports precision thermal diode measurements of processors
on sub-micron processes.
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 mother-
board 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.
2.0 Features
n
8-bit
Σ
ADC
n
Monitors 16 power supplies
n
Monitors 4 remote thermal diodes and 2 LM60
n
New TruTherm technology support for precision thermal
diode measurements
n
Internal ambient temperature sensing
n
Programmable autonomous fan control based on
temperature readings with fan boost support
n
Fan boost support on tachometer limit error event
n
Fan control based on 13-step lookup table or PI Control
Loop or combination of both
n
PI fan control loop supports Tcontrol
n
Temperature reading digital filters
n
0.5C digital temperature sensor resolution
n
0.0625C filtered temperature resolution for fan control
n
2 PWM fan speed control outputs
n
4 fan tachometer inputs
n
Dual processor thermal throttling (PROCHOT)
monitoring
n
Dual dynamic VID monitoring (6/7 VIDs per processor)
supports VRD10.2/11
n
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
n
2 general purpose inputs that can be used to monitor
the 7th VID signal for VRD11
n
Limit register comparisons of all monitored values
n
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
n
2.5V reference voltage output
n
56-pin TSSOP package
n
XOR-tree test mode
3.0 Key Specifications
n
Voltage Measurement Accuracy
n
Temperature Resolution
n
Temperature Sensor Accuracy
n
Temperature Range:
— LM94 Operational
— Remote Temp Accuracy
n
Power Supply Voltage
n
Power Supply Current
±
2% FS (max)
9-bits, 0.5C
±
2.5 C (max)
0C to +85C
0C to +125C
+3.0V to +3.6V
1.6 mA
4.0 Applications
n
Servers
n
Workstations
n
Multi-processor based equipment
5.0 Ordering Information
Order Number NS Package Number Transport media
LM94CIMT
MTD56
LM94CIMTX
MTD56
34 units in rail
1000 units in tape-and-reel
I2C is a registered trademark of the Philips Corporation.
April 2006
L
2006 National Semiconductor Corporation
DS201124
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM94CIMTX/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95010 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Digital Temperature Sensor with SensorPath⑩ Bus in MSOP8 Package |
| LM95010CIMM | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95010CIMM/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95010CIMMX | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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