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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA4672 датащи(PDF) 2 Page - NXP Semiconductors |
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TDA4672 датащи(HTML) 2 Page - NXP Semiconductors |
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2 / 16 page  1996 Dec 11 2 Philips Semiconductors Product specification Picture Signal Improvement (PSI) circuit with enhanced peaking function TDA4672 FEATURES • Luminance signal delay from 20 ns to 1100 ns (minimum step 45 ns) • Selectable luminance signal peaking with symmetrical overshoots • Selectable 2.6 or 5 MHz peaking centre frequency and degree of peaking from −6 dB to +9 dB in 16 steps of 1 dB each • Selectable noise reduction by coring • Selectable 5 or 12 V sandcastle input voltage • All controls selected via the I2C-bus • Timing pulse generation for clamping and delay time control synchronized by sandcastle pulse • Automatic luminance signal delay correction using a control loop • Luminance input signal clamping with coupling capacitor • 4.5 to +8.8 V supply voltage • Minimum of external components. GENERAL DESCRIPTION The TDA4672 delays the luminance signal. The luminance signal can also be improved by peaking and noise reduction (coring). QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER MIN. TYP. MAX. UNIT VP supply voltage (pin 1) 4.5 5 8.8 V IP(tot) total supply current 26 37 46 mA td(Y) Y signal delay time 20 − 1130 ns Vi(Y)(p-p) composite Y input signal (peak-to-peak value, pin 16) − 450 640 mV GY voltage gain of Y channel −−1 − dB Tamb operating ambient temperature 0 − 70 °C TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA4672 DIP18 plastic dual in-line package; 18 leads (300 mil) SOT102-1 |
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