Moteur de recherche de fiches techniques de composants électroniques |
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LC72130M Fiches technique(PDF) 17 Page - Sanyo Semicon Device |
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LC72130M Fiches technique(HTML) 17 Page - Sanyo Semicon Device |
17 / 22 page 2. IF Counter Operation Prior to starting the IF counter, reset the IF counter in advance by setting CTE in the serial data to zero. The IF counter is started by changing the value of CTE in the serial data from zero to one. The serial data is latched when the CE pin is dropped from high to low. The IF signal must be supplied to the IFIN pin in the period between the point the CE pin goes low and the end of the wait time at the latest. Next, the value of the IF counter at the end of the measurement period must be read out during the period that CTE is 1. This is because the IF counter is reset when CTE is set to 0. Note: When operating the IF counter, the control microprocessor must check for the presence of the IF-IC SD (station detect signal) and, must turn on the IF buffer output and operate the counter only if the SD signal is present. Autosearch techniques that use only the IF counter are not recommended, since it is possible for IF buffer leakage output to cause incorrect stops at points where there is no station. IFIN minimum input sensitivity standard f (MHz) ( ): Actual values (reference data) No. 4973-17/22 LC72130, 72130M IFS 0.4 ≤ f < 0.5 0.5 ≤ f < 8 8 ≤ f ≤ 12 1: Normal mode 40 mVrms 40 mVrms 40 mVrms (0.1 to 3 mVrms) (1 to 10 mVrms) 0: Degradation mode 70 mVrms 70 mVrms 70 mVrms (10 to 15 mVrms) (30 to 40 mVrms) |
Numéro de pièce similaire - LC72130M |
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Description similaire - LC72130M |
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