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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TDA9170 Fiches technique(PDF) 10 Page - NXP Semiconductors |
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TDA9170 Fiches technique(HTML) 10 Page - NXP Semiconductors |
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10 / 22 page  October 1994 11 Philips Semiconductors Preliminary specification YUV picture improvement processor based on histogram modification TDA9170 PICTURE AMPLITUDE STRETCH EG(s) gain error after stretch maximum offset − − 1 % BLACK OFFSET CORRECTION ON/OFF SWITCH BOF (PIN 11); note 2 Vi(blos) input voltage level correction off − − 1.5 V correction on 3.5 − − V Iib(blos) input bias current − − 0.1 µA TIME CONSTANT CONTROL TAUBP (PIN 4); see Fig.3 IBP(d) discharge current − − 3.5 mA IibBP input bias current − − 0.1 µA VBP(l) control voltage lower limit − 1.0 − V VBP(h) control voltage upper limit − 2.5 − V TIME CONSTANT CONTROL TAUBL (PIN 5); see Fig.4 IibBL input bias current − − 0.1 µA VBL(l) control voltage lower limit − 2.0 − V VBL(h) control voltage upper limit − 3.5 − V Histogram measurement HISTOGRAM UPDATES AT HMX (PINS 16 TO 20) QHMb segment bleeder accuracy − − 2 % VHM(av) average voltage level for 5 segments − 1.0 − V VHM(min) minimum segment voltage level 0 − − V VHM(max) maximum segment voltage level − 5.0 − V IibHM input bias current − − 0.1 µA TIME CONSTANT CONTROL TAUHM (PIN 22); see Figs 5, 6 and 7 IibTHM input bias current − − 0.1 µA VTHM(l) control voltage lower limit − 1.0 − V VTHM(h) control voltage upper limit − 2.0 − V MISCOUNT DETECTION Qmc(d) miscount detection level − 5 − % tp(mc) miscount propagation delay 20% step − 25 − ns to(mc) miscount detection on-time for each event 0.31 0.36 0.41 µs tY(mc) mismatch propagation and luminance delay − − 20 ns Qmc(aW) miscount activation level at white no miscount − 90 − % Qmc(dW) miscount de-activation level at white miscount − 87 − % SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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