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TDA4557 Scheda tecnica(PDF) 5 Page - NXP Semiconductors |
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TDA4557 Scheda tecnica(HTML) 5 Page - NXP Semiconductors |
5 / 11 page March 1991 5 Philips Semiconductors Product specification Multistandard decoder TDA4557 CHARACTERISTICS VP =V13-9 = 12 V; Tamb =25 °C; measured in Fig.1; unless otherwise specified PARAMETER SYMBOL MIN. TYP. MAX. UNIT Supply (pin 13) Supply voltage range VP 10.8 1.2 13.2 V Supply current IP 50 65 80 mA Chrominance part Chrominance input signal (pin 15) input voltage with 75% colour bar signal (peak-to-peak value) V15(p-p) 20 100 400 mV input impedance Z 15-9 710 − k Ω Chrominance output signal (pin 12) output voltage (peak-to-peak value) V12(p-p) 1.1 1.6 1.75 V output impedance (npn emitter follower) Z12-9− − 20 Ω DC output voltage V12-9 7.3 8.2 9.0 V Input for delayed signal (pin 10) DC input current I10 −− 10 µA input resistance R10-9 10 −− k Ω Demodulator part (PAL/NTSC) Colour difference output signals output voltage (proportional to V13-9) (peak-to-peak value) − (R-Y) signal (pin 1) V1(p-p) − 1.05 V ± 2dB − V − (B-Y) signal (pin 3) V3(p-p) − 1.33 V ± 2dB − V Ratio of colour difference output signals (R-Y)/(B-Y) V1/3-9 − 0.79 ± 10% − Residual carrier (subcarrier frequency) (peak-to-peak value) V1,3(p-p) −− 30 mV Residual carrier (PAL only) (peak-to-peak value) V1,3(p-p) − 10 − mV H/2 ripple at (R-Y) output (pin 1) (peak-to-peak value) without input signal V1(p-p) −− 10 mV DC output voltage npn emitter follower with internal current source of 0.3 mA V1,3-9 7.0 7.7 8.4 V output impedance Z 1,3-9− − 150 Ω |
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