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ML6428CS-2 Datasheet(PDF) 1 Page - Micro Linear Corporation |
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ML6428CS-2 Datasheet(HTML) 1 Page - Micro Linear Corporation |
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1 / 11 page  ML6428 S-Video Filter and 75 W Line Drivers with Summed Composite Output 1 GENERAL DESCRIPTION The ML6428 is a dual Y/C 4th-order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device also contains a summing circuit to generate filtered composite video. The Y and C input signals from DACs are AC coupled into the ML6428. Both channels have DC restore circuitry to clamp the DC input levels during video sync. The Y channel uses a sync tip clamp. The CV and the C channels share a feedback clamp. All outputs must be AC coupled into their loads for the -1 and -3 versions. The -2 and -4 versions are DC coupled. All inputs (-1, -2, -3 and -4 versions) are AC coupled. The Y or C outputs can drive 2VP-P into a 150 W load, while the CV output can drive 2VP-P into 75 W. Thus the CV output is capable of driving two independent 150 W loads to 2VP-P. On the CV output, one of the 75 W loads can be shorted to ground with no loss of drive to the remaining load. The Y, C and CV channels have a gain of 2 (6dB) with 1VP-P input levels. BLOCK DIAGRAM FEATURES s 6.7MHz Y and C filters, with CV out for NTSC or PAL s 75 W cable line driver for Y, C, CV, and TV modulator s 43dB stopband attenuation at 27MHz s 1dB flatness up to 4.8MHz s No external frequency select components or clocks s 12ns group delay flatness up to 10MHz s 5% overshoot on any input edge s AC coupled input and output (ML6428CS-1 and -3) s AC coupled input and DC coupled output (ML6428CS-2 and -4) s 0.4% differential gain on all channels, 0.4º differential phase on all channels s 0.7% total harmonic distortion on all channels s 5V ±10% operation s DC restore with low tilt BUFFER BUFFER TRANSCONDUCTANCE ERROR AMP BUFFER SYNC TIP CLAMP 4th-ORDER FILTER 4th-ORDER FILTER 4 1 3 8 6 5 GND CIN YIN YOUT CVOUT COUT VCCO VCC 7 2 Σ + + DATASHEET June, 2000 |
Similar Part No. - ML6428CS-2 |
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Similar Description - ML6428CS-2 |
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