data/json/DLP/891261.json

{
  "ticketNumber" : "891261",
  "reporterName" : "Michiaki Tanii",
  "rankPoints" : "1600",
  "resolutionStatus" : "TI Thinks Resolved",
  "ticketName" : "TL494: Frequency configuration",
  "rankName" : "Intellectual",
  "replies" : " 3",
  "views" : " 27",
  "queryText" : "Part Number: TL494 Hi Referring 9.3.2 Oscillator, the equation is f = 1/(RT x CT) but TYP frequency is 10kHz at CT = 0.01uF, RT = 12k ohm in the 7.6 Electrical Characteristics, Oscillator Section. Could you kindly advise how customer should consider the frequency configuration ? Thank you and best regards, Michiaki",
  "partNumber" : " TL494",
  "allResponseList" : [ {
    "contentId" : "3296841",
    "userName" : "John Griffin1",
    "rankPoints" : "32175",
    "rankName" : "Mastermind",
    "date" : "Mar 25, 2020 3:45 PM",
    "userId" : "1693693",
    "content" : "Hello Michiaki, This is some anomaly in the datasheet that goes all through revisions from Rev A to the present Rev H. Please use the curves in Figure 1 or the equation 3 in the datasheet to calculate the oscillator frequency. Thank you for pointing out this anomaly and I will try to find out why the test circuit uses a 12k resistor for Rt instead of a 10k. Regards John"
  }, {
    "contentId" : "3320709",
    "userName" : "Michiaki Tanii",
    "rankPoints" : "1600",
    "rankName" : "Intellectual",
    "date" : "Apr 20, 2020 4:12 AM",
    "userId" : "6119109",
    "content" : "Hi John, > I will try to find out why the test circuit uses a 12k resistor for Rt instead of a 10k. Regarding on the above, could you kindly update latest situation ? Thank you and best regards, Michiaki"
  }, {
    "contentId" : "3322914",
    "userName" : "John Griffin1",
    "rankPoints" : "32175",
    "rankName" : "Mastermind",
    "date" : "Apr 21, 2020 2:12 PM",
    "userId" : "1693693",
    "content" : "Hello Michiaki, I will let you know when I have an update Regards John"
  } ],
  "tags" : [ "/support/power-management/f/196/tags/TL494" ],
  "fourmType" : "TI"
}