{ "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" }