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FMS6419 Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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FMS6419 Datasheet(HTML) 6 Page - Fairchild Semiconductor |
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6 / 10 page 
6 REV. 4C June 28, 2004 DATA SHEET FMS6419 General Description The FMS6419 offers comprehensive filtering for set top box or DVD applications. This part consists of triple 6th order filters with selectable 30MHz or 8MHz frequencies and a dual filter for filtering Y, C with a composite summer. 2 to 1 multiplexers are provided on the triple filters as well as provisions for auxiliary input to the composite channel. The triple filters are intended for either YUV or RGB signals. All channels accept DC coupled ground-referenced 1V signals. The filters outputs 2Vpp signals into AC coupled terminated loads. The low-pass filters are powered by 3.3V and output buffers are powered by 5.0V. The FMS6419 is a next generation filter solution from Fairchild Semiconductor addressing the expanding filtering needs for set top boxes, and DVD players. The product provides selectable filtering from 30MHz to 8MHz on the RGB channels. Thus, the FMS6419 addresses the require- ment for a single set top box to be compatible with a variety of resolution standards. Additionally, the product provides additional filters for Y, C, and Composite Video (CV) out- puts. Multiplexers on the RGB and CV channels provide further flexibility. For DVD applications, the product provides filtering and output drive amplification for 6 channels of outputs. These include R, G, B, Y, C, and CV outputs. For Set top boxes, this product provides for 2 channels of video to be filtered, as well as the flexibility of selectable high order filtering for multiple resolution standards. Additional flexibility is provided by the Y (Luma) and C (Chroma) filters with a composite summer. All channels provide 6dB gain, accept 1V ground referenced inputs, and drive AC coupled loads. The filters for the R, G, B, Y, C, and CV channels are powered from a 3.3V supply and the outputs from 5V. High Definition Typical Performance Characteristics (TC = 25°C, Vi = 1Vpp; VCCA = 3.3V, VCCO = 5.0V, FSEL = 1, all inputs AC coupled with 0.1 µF, all outputs AC coupled with 220 µF into 150Ω, referenced to 400kHz; unless otherwise noted) Frequency Response RGB Channels Frequency (MHz) 400kHz 20 40 60 80 90 Group Delay vs. Freq. RGB Channels 1 1 = 32MHz (4.98ns) -40 -30 -20 -10 0 10 Frequency (MHz) 400kHz 20 10 30 40 50 60 -12 -10 -8 -6 -4 -2 0 2 4 6 8 1 Noise vs. Frequency RGB Channels -75 -95 -135 -55 0 1.0 2.0 3.0 4.0 5.0 Frequency (MHz) -125 -115 -105 -85 -65 -45 2 3 Mkr Frequency Amplitude Ref 400kHz 6dB 1 26.57MHz -1dB BW 2 31.5MHz -3dB BW 3 74.25MHz -33.53dB f SBHD = Amplitude(ref) – Amplitude(3) = 39.53dB |
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