unisonic technologies co., ltd vf8143 preliminary cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2013 unisonic technologies co., ltd qw-r502-956.a lo w -cost three-channel 4th-order standard- definition video filters ? description the utc vf8143 low-cost video filter (lcvf) offers six channels of 4th-order filters for standard-definition and drivers with a low-cost integrated device. the utc vf8143 inputs feature a transparent clamp compatible with ac- coupled and dc-coupled input signals and allows dac outputs to be directly coupled. the outputs can drive ac- or dc-coupled single (150 ? ) or dual (75 ? ) loads. the input dc levels are offset approximately +280mv at the output (see applicati ons section for details). the utc vf8143 is ideal for dac smoothing in applications such as cable set-top boxes, sa tellite set-top boxes, hdtv, video on demand (vod), dvd players, and personal video recorders. ? features * three-channel 4th-order 8mhz filters for sd video * transparent input clamping * ac-or dc-coupled inputs * ac-or dc-coupled outputs * drives single, +6db output (150 ? ) * drives dual, +6db output (75 ? ) * dc-coupled outputs eliminate ac-coupling capacitors * single +5v power supply * robust 8kv esd protection sop-8 ? ordering information ordering number package packing lead free halogen free vf8143l-s08-r vf8143gs08-r sop-8 tape reel VF8143L-S08-T vf8143g-s08-t sop-8 tube
vf8143 preliminary cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-956.a ? pin configuration ? pin description pin no. pin name description 1 in1 video input, channel 1 2 in2 video input, channel 2 3 in3 video input, channel 3 4 v cc +5v supply, do not float 5 gnd must be tied to ground, do not float 6 out3 filtered output, channel 3 7 out2 filtered output, channel 2 8 out1 filtered output, channel 1 ? block diagram
vf8143 preliminary cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-956.a ? absolute maximum rating parameter symbol ratings unit dc supply voltage v cc -0.3~6 v analog and digital i/o -0.3~v cc +0.3 v output channel-any one channel (do not exceed) 50 ma junction temperature t j +150 c operating temperature t opr -40~+85 c storage temperature t stg -65~+150 c note: absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit thermal resistance, jedec standard multi-layer test boards, still air ja 115 c/w ? recommended operating conditions parameter symbol test conditions min typ max unit v cc range 4.75 5.0 5.25 v ? dc electrical characteristics (t a =25c, v cc =5v, r source =37.5 ? , all inputs are ac coupled with 0.1 f, all outputs are ac coupled with 220 f into 150 ? loads, unless otherwise noted.) parameter symbol test conditions min typ max unit supply current (note 1) i cc no load 19 27 ma video input voltage v in referenced to gnd if dc coupled 1.4 v pp power supply rejection psrr dc (all channels) -50 db note: 1. 100% tested at 25c. ? ac electrical characteristics (t a =25c, v in =1v pp , v cc =5v, r source =37.5 ? , all inputs are ac coupled with 0.1 f, all outputs are ac coupled with 220 f into 150 ? loads, unless otherwise noted.) parameter symbol test conditions min typ max unit channel gain (note 1) av all channels 6.0 6.2 6.4 db -1db bandwidth (note 1) f 1db all channels 5.6 6.5 mhz -3db bandwidth f c all channels 7.7 mhz attenuation (stopband reject) f sb all channels at f=27mhz 48 db differential gain dg all channels 0.3 % differential phase d all channels 0.6 output distortion (all channels) thd v out =1.8v pp , 1mhz 0.4 % crosstalk (channel-to-channel) x talk at 1mhz -60 db signal-to-noise ratio snr all channels ntc-7 weighting: 100khz~4.2mhz 75 db propagation delay t p d delay from input-to-output, 4.5mhz 59 ns note: 1. 100% tested at 25c.
vf8143 preliminary cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-956.a ? typical application circuit utc vf8143 75 video cables 220f video soc r out in1 out1 18 75 r 75 220f g out in2 out2 27 75 g 220f b out in3 out3 36 75 b v cc gnd 45 dvd player or stb + 1.0 f +5v 0.1 f 75 75 75 75 75
vf8143 preliminary cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-956.a utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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