NE1617ADS

Temperature monitor for microprocessor systems


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The NE1617A is an accurate two-channel temperature monitor. It measures the temperature of itself and the temperature of a remote sensor. The remote sensor is a diode connected transistor. This can be in the form of either a discrete NPN/PNP, such as the 2N3904/2N3906, or a diode connected PNP built into another die, such as is done on some Intel microprocessors.

The temperature of both the remote and local sensors is stored in a register that can be read via a 2-wire SMBus. The temperatures are updated at a rate that is programmable via the SMBus (the average supply current is dependent upon the update rate — the faster the rate, the higher the current).

In addition to the normal operation, which is to update the temperature at the programmed rate, there is a one-shot mode that will force a temperature update.

There is also an alarm that senses either an overtemperature or undertemperature condition. The trip points for this alarm are also programmable.

The device can have one of nine addresses (determined by two address pins), so there can be up to nine of the NE1617A on the SMBus.

It can also be put in standby mode (in order to save power). This can be done either with software (over the SMBus) or with hardware (using the STBY pin).

Features and benefits

  • Replacement for Maxim MAX1617 and Analog Devices ADM1021
  • Monitors local and remote temperature
  • Local (on-chip) sensor accuracy:
    • ±2 °C at 60 °C to 100 °C
    • ±3 °C at -40 °C to 125 °C
  • Remote sensor accuracy:
    • ±3 °C at 60 °C to 100 °C
    • ±5 °C at -40 °C to 125 °C
  • No calibration required
  • Programmable overtemperature/undertemperature alarm
  • SMBus 2-wire serial interface up to 100 kHz
  • 3 V to 5.5 V supply range; 5.5 V tolerant
  • 70 µA supply current in operating mode
  • 3 µA (typical) supply current in standby mode
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC standard JESD78, which exceeds 100 mA
  • Small 16-lead SSOP (QSOP) package

Applications

  • Desktop computers
  • Notebook computers
  • Smart battery packs
  • Industrial controllers
  • Telecommunications equipment
All information on this product information page is subject to the subsequent disclaimers:
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Parametrics of this product

Type numberPackageAccuracy on-chip(±°C)Accuracy remote(±°C)Assignable addressesSMBus clock(kHz)Operating voltage(VDC)Standby current(uA)Operating Temperature(Cel)I2C-bus controlled
NE1617ADSSOT519-1
(SSOP16)		1@+60~100?2@0~1253@+60~100?5@0~12591003.0~5.5100~1203.0~5.5

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
NE1617ADSNE1617ADS,1129352 681 19112Volume productionSOT519-1
(SSOP16) 		TubeNE1617A
NE1617ADSNE1617ADS,1189352 681 19118Volume productionSOT519-1
(SSOP16) 		Reel Pack, SMD, 13"NE1617A

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
NE1617ADS/GNE1617ADS/G,1189352 787 13118Withdrawn
Replacement product		SOT519-1
(SSOP16) 		Reel Pack, SMD, 13"NE1617A

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT519-1SSOP16plastic shrink small outline package; 16 leads; body width 3.9 mm; lead pitch 0.635 mm2003-02-18

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
NE1617ADS/G93527871311831-Dec-1030-Jun-11NE1617ADSDN 66
  • Multi source product
  • Standard availability
Standard End of Life. Discontinued /G version only.

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
NE1617ADSNE1617ADS,112NE1617ADSweek 13, 20053.03.333333333333333E811
NE1617ADSNE1617ADS,118NE1617ADSweek 13, 20053.03.333333333333333E811

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
NE1617ADS/GNE1617ADS/G,118Not availableAlways Pb-free3.03.333333333333333E811
Quality and reliability disclaimer

Quality and reliability disclaimer

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
NE1617ADS/G93527871311831-Dec-1030-Jun-11NE1617ADSDN 66
  • Multi source product
  • Standard availability
Standard End of Life. Discontinued /G version only.

Documentation for this product

File nameTitleTypeFormatDate
NE1617ATemperature monitor for microprocessor systemsData sheetpdf2012-03-20
AN10441Level shifting techniques in I2C-bus designApplication notepdf2007-06-20
AN10216I2C manualApplication notepdf2003-03-27
AN10349Digital temperature sensor accuracy explainedApplication notepdf2006-08-09
75016543Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliancesBrochurepdf2008-06-01
75016533Precise thermal monitoring with small, accurate temp sensors; NXP temperature sensors NE1617A & NE1619Leafletpdf2008-08-01
75017144I2C Selection Guide 2H 2011Leafletpdf2011-09-29
75015693I2C-bus temperature sensors; Small, accurate, low-cost sensors for advanced temperature regulationSelection guidepdf2006-11-01
UM10204I2C-bus specification and user manualUser manualpdf2007-06-26
UM10206I2C Demonstration Board 2005-1 Quick Start GuideUser manualpdf2006-06-13
UM10204_JAI2C-bus specification and user manualUser manualpdf2013-04-03

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
NE1617ADS9352 681 19112NE1617ADS,112       
NE1617ADS9352 681 19118NE1617ADS,118ASIAWPI12,500250005/17/2013Buy online 
   NADIGI-KEY CORPORATION9,9945/17/2013Buy online 
   NAFUTURE ELECTRONICS2,0855/16/2013Buy online 
   EUFUTURE ELECTRONICS UK2,0855/16/2013Buy online 
   ASIAFUTURE ELECTRONICS- ASIA2,0855/16/2013Buy online 
   NAAVNET EXPRESS AMERICAS4005/17/2013Buy online 
   JAPANCHIP ONE STOP2205/17/2013Buy online 

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