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LA7191N Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LA7191N Datasheet(HTML) 5 Page - Sanyo Semicon Device |
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Continued from preceding page. Parameter Symbol Input Output Conditions min typ max Unit VXO oscillation level VVXO-R T37A T19 VIN = standard color bar signal (1 Vp-p), measure T19 output amplitude (with a FET probe) 450 560 670 mVp-p REC ACC characteristics ACCR1 T37A T15A VIN = standard color bar signal (1 Vp-p), input +6 dB chroma signal level only, measure T15A burst level, and calculate ratio with VOR-15 0.2 0.5 dB ACCR2 T37A T15A VIN = standard color bar signal (1 Vp-p), input –6 dB chroma signal level only, measure T15A burst level, and calculate ratio with VOR-15 –0.5 –0.1 dB REC ACC killer input level VACCK-ON T37A T15A VIN = standard color bar signal (1 Vp-p), lower the chroma signal, and measure the input burst level at the point where output at T15A ceases, and calculate the ratio with the standard input level –26 dB REC ACC killer output level VOACCK T37A T15A Use a spectrum analyzer to measure the output level at T15A in the killer state described previously; ratio with VOR-15 –60 –50 dB Input level for REC ACC killer return VACCK-OFF T4A T34A Starting from the killer state described previously, gradually raise the input chroma level and measure the input burst level when output is generated at T15A and calculate the ratio with the standard input level –20 dB VXO control sensitivity SVXO T37A T17 T19A Measure the pin 17 DC voltage when a standard color bar signal is input (1 Vp-p)...V0 Measure the frequency at T19A when V0 is applied to pin 17 from the external power supply...f1 Measure the frequency at T19A when V0 + 10 mV is applied to pin 17...f2 SVXO = f 2 –f1 10 Hz/mV 3.8 5.7 7.6 Hz/mV REC APC pull-in range ∆ fAPC1 T37A T15A Input a 50% white signal overlapped with a 4.4336 MHz, 300 mVp-p continuous wave. After confirming that there is output at T15A, increase the frequency of the CW until the output at T15A stops, and then gradually reduce the frequency until output appears again at T15A; that CW frequency is f1. ∆fAPC1 = f1 – 4433619 (Hz) 350 440 Hz ∆ fAPC2 T37A T15A In the same manner, reduce the frequency of the CW until the output at T15A stops, and then gradually increase the frequency until output appears again at T15A; that CW frequency is f2. ∆fAPC2 = f2 – 4433619 (Hz) –900 –350 Hz BGP delay time tD T37A T32 T36 Measure waveforms at T32 and T36 when a standard color bar signal (1 Vp-p) is input. 4.3 µs BGP pulse width tW T37A T32 T36 4.8 µs Continued on next page. LA7191N No. 5471 - 5/11 |
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