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TDA4691 데이터시트(PDF) 8 Page - NXP Semiconductors |
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TDA4691 데이터시트(HTML) 8 Page - NXP Semiconductors |
8 / 26 page September 1993 8 Philips Semiconductors Preliminary specification Sync Processor with Clock (SPC) TDA4691 CHARACTERISTICS VP1 =8V; VP2 = 5 V; measured at Tamb = +25 °C; unless otherwise specified; application see Figs 10 and 11; video input signal referenced to CCIR standard. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply (pins 19 and 12; all voltages are measured with regard to ground (pins 3 and 8)) V19 supply voltage 7.2 8.0 8.8 V IP1 supply current − 20 30 mA V12 supply voltage same rise time as V19 4.5 5.0 5.5 V IP2 supply current − 15 30 mA Ptot total power dissipation − 260 430 mW Sync separator (pin 20) V20(p-p) input voltage (peak-to-peak value) AC coupled − 12 V V20(p-p) sync amplitude (peak-to-peak value) 0.1 − 0.6 V RG source resistor of generator −− 1k Ω I20 current during sync −−30 −µA I20 current during remaining time − 1 −µA Black level (pin 1) SLH slicing level H − 50 − % SLV slicing level V − 50 − % Sync output (pin 9) V9 no sync I9 = +1mA − 0.3 − V V9 positive sync I9 = −1 mA 2.7 − V12 V CL load capacitance −− 40 pF t1 time delay between pin 20 and pin 9 see Fig.3 100 200 500 ns t2 time delay between pin 20 and pin 9 see Fig.3 100 300 500 ns Phase detector (pins 16 and 17) f0 nominal sync frequency − 15.625 − kHz f0’fosc : 864 = phiref − 15.625 − kHz I17 current at sync time (fast and normal time constant) −±240 −µA I17 current at sync time (slow time constant) −±80 −µA I16 current at sync time time constant T1 −±2 − mA V17 filter 2 voltage 1.5 3 4.5 V V16 filter 1 voltage 1.5 3 4.5 V ∆f 0/∆V16 VCO sensitivity see VCO − 360 − kHz/V 13.5 MHz VCO (pin 15) R15 f0 defining resistor see Fig.4(a) − 3.75 − k Ω V15 pin voltage (V19 dependent) see Fig.4(a) 2.9 3 3.1 V I15 current for 13.5 MHz −720 −800 −880 µA gVCO transconductance at f0 15.2 − 18.6 kHz/ µA |
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