 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ADT7476ARQZ-REEL Datasheet(PDF) 1 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
ADT7476ARQZ-REEL Datasheet(HTML) 1 Page - Analog Devices |
|
|
1 / 72 page  dBCool™ Remote Thermal Controller and Voltage Monitor ADT7476 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES Monitors up to 5 voltages Controls and monitors up to 4 fans High and low frequency fan drive signal 1 on-chip and 2 remote temperature sensors Extended temperature measurement range up to 191°C Automatic fan speed control mode controls system cooling based on measured temperature Enhanced acoustic mode dramatically reduces user perception of changing fan speeds Thermal protection feature via THERM output Monitors performance impact of Intel® Pentium™ 4 processor Thermal control circuit via THERM input 3-wire and 4-wire fan speed measurement Limit comparison of all monitored values Meets SMBus 2.0 electrical specifications GENERAL DESCRIPTION The ADT7476 dBCool controller is a thermal monitor and multiple PWM fan controller for noise-sensitive or power- sensitive applications requiring active system cooling. The ADT7476 can drive a fan using either a low or high frequency drive signal, monitor the temperature of up to two remote sensor diodes plus its own internal temperature, and measure and control the speed of up to four fans, so they operate at the lowest possible speed for minimum acoustic noise. The automatic fan speed control loop optimizes fan speed for a given temperature. The effectiveness of the system’s thermal solution can be monitored using the THERM input. The ADT7476 also provides critical thermal protection to the system using the bidirectional THERM pin as an output to prevent system or component overheating. FUNCTIONAL BLOCK DIAGRAM ACOUSTIC ENHANCEMENT CONTROL BAND GAP REFERENCE 10-BIT ADC INTERRUPT MASKING PWM CONFIGURATION REGISTERS ADDRESS POINTER REGISTER VALUE AND LIMIT REGISTERS LIMIT COMPARATORS INTERRUPT STATUS REGISTERS INPUT SIGNAL CONDITIONING AND ANALOG MULTIPLEXER VCC TO ADT7476 VCC D1+ D1– D2+ D2– +5VIN +12VIN +2.5VIN VCCP VID/GPIO REGISTER VID5 VID4/GPIO4 VID3/GPIO3 VID2/GPIO2 VID1/GPIO1 VID0/GPIO0 GPIO6 SERIAL BUS INTERFACE SCL SDA SMBALERT SMBus ADDRESS SELECTION ADDR SELECT ADDREN GND PWM1 PWM2 PWM3 PWM REGISTERS AND CONTROLLERS (HF AND LF) AUTOMATIC FAN SPEED CONTROL TACH1 TACH2 TACH3 TACH4 FAN SPEED COUNTER THERMAL PROTECTION PERFORMANCE MONITORING THERM BAND GAP TEMP. SENSOR ADT7476 Figure 1. |
Similar Part No. - ADT7476ARQZ-REEL |
|
Similar Description - ADT7476ARQZ-REEL |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
