february 2011 ? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 fsav450 ? 800mhz, 4-channel, 2:1 video switch fsav450 ? 800mhz, 4-channel, 2:1 video switch features ? -50db off isolation at 30mhz ? -80db non-adjacent channel crosstalk at 30mhz ? 3db bandwidth: 800mhz ? on resistance: 4 ? (typical) ? low power consumption: 1a (maximum) ? control input ttl compatible applications ? rgb video switch in lcd, plasma and projector displays description the fsav450 is a high performance quad sinple-pole double-throw (spdt) (2-to-1 multiplexer/ demultiplexer) video switch designed specifically for switching high definition ypbpr and comput er rgb (up to uxga) signals. the bandwidth of this device is 800mhz (typical) which allows signals to pass with minimal edge and phase distortion. image int egrity is maintained with low crosstalk, high off-isol ation and low differential gain and phase. the low on resistance (4 ? typical) minimizes signal insertion loss. low voltage operation (3v), low power consumption (1a maximum) and small scale packaging (including leadless dqfn) make this device ideal for a broad range of applications. ordering information part number operating temperature range package packing method fsav450bqx -40 to +85c 16-terminal depopulated quad very-thin flat pack no leads (dqfn), jedec mo-241, 2.5 x 3.5mm tape and reel figure 1. typical application diagram
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 2 fsav450 ? 800mhz, 4-channel, 2:1 video switch pin configurations figure 2. analog symbol figure 3. dqfn pin assignments pin descriptions pin # name description 15 /oe bus switch enabled 1 s select input 4, 7, 9, 12 a bus a 2, 3, 5, 6, 10, 11,13, 14 b 1 -b 2 bus b 8 gnd ground 16 v cc supply voltage truth table s /oe function don?t care high disconnected low low a=b 1 high low a=b 2
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 3 fsav450 ? 800mhz, 4-channel, 2:1 video switch absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the devic e may not function or be operable above the recommended operating c onditions and stressing the parts to these levels is not recommended. in addition, extended exposure to stre sses above the recommended operating conditi ons may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter min. max. unit v cc supply voltage -0.5 +6.0 v v s dc switch voltage -0.5 +6.0 v v in dc input voltage (1) -0.5 +6.0 v i ik dc input diode current, v in < 0v -50 ma i out dc output sink current 128 ma i cc /i gnd dc v cc / gnd current 100 ma t stg storage temperature range -65 +150 c esd human body model, jesd22-a114 2000 v note : 1. the input and output negativ e voltage ratings may be exceeded if the i nput and output diode current ratings are observed. recommended operating conditions the recommended operating conditions table defines the conditions for actual device oper ation. recommended operating conditions are specified to ens ure optimal performance to the datasheet specificat ions. fairchild does not recommend exceeding them or designi ng to absolute maximum ratings. symbol parameter min. max. unit v cc power supply 4.0 5.5 v v in input voltage 0 v cc v v out output voltage 0 v cc v t r , t f input rise and fall time switch control input 0 5 ns/v switch i/o 0 dc t a operating temperature, free air -40 +85 c note : 2. unused control inputs must be held high or low; they may not float.
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 4 fsav450 ? 800mhz, 4-channel, 2:1 video switch dc electrical characteristics typical values are at t a = +25c. symbol parameter conditions v cc (v) t a = -40 to +85c units min. typ. max. v analog analog signal range 0 2 v v ik clamp diode voltage i in =-18ma 4.5 -1.2 v v ih high-level input voltage 4.5 to 5.5 2.0 v v il low-level input voltage 4.5 to 5.5 0.8 v i i input leakage current 0 ? v in ? 5.5v 5.5 1.0 a i off off-state leakage current 0 ? a, b ? v cc 5.5 1.0 a r on switch on resistance (3) v in =1.0v, r i =75 ? , i on =13ma 4.5 4 6 ?? v in =2.0v, r i =75 ? , i on =26ma 4.5 5 7 i cc quiescent supply current v in =v cc or gnd, i out =0 5.5 1 a ? i cc increase in i cc per input one input at 3.4v other inputs at v cc or gnd 5.5 1.5 ma note : 3. measured by the voltage drop between the a and b pins at the indi cated current through the switch. on resistance is determined by the lower of the voltages on the a or b pins. ac electrical characteristics typical values are at v cc =5.0v and t a = +25c. symbol parameter conditions v cc t a =-40 to+85c units figure min. typ. max. t on turn on time s to bus b vb=2v 4.5 to 5.5 4.0 6.0 ns figure 11, figure 12 output enable time oe to a or b 3.5 5.5 t off turn off time s to bus b vb=2v 4.5 to 5.5 1.5 3.5 ns figure 11, figure 12 output disable time oe to a or b 1.5 3.5 d g differential gain r l =75 ? , f=3.58mhz 4.5 to 5.5 0.2 % figure 5 d p differential phase r l =75 ? , f=3.58mhz 4.5 to 5.5 0.1 figure 6 o irr non-adjacent off isolation r l =75 ? , f=30mhz 4.5 to 5.5 -50 db figure 7, figure 13 x talk non-adjacent channel crosstalk r l =75 ? , f=30mhz 4.5 to 5.5 -80 db figure 8, figure 14 b w -3db bandwidth r l =50 ? 4.5 to 5.5 800 mhz figure 4, figure 15 r l =75 ? 650 figure 15 capacitance typical values are at t a = +25c. symbol parameter conditions typ. units c in control pin input capacitance v cc =0v 3.0 pf c on a/b on capacitance v cc =5.0v, /oe=0v 8.5 pf c off port b off capacitance v cc = /oe=5v 3.0 pf
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 5 fsav450 ? 800mhz, 4-channel, 2:1 video switch ac characteristics figure 4. gain vs. frequency figure 5. differential gain vs. dc bias figure 6. differential gain vs. dc bias figure 7. off isolation
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 6 fsav450 ? 800mhz, 4-channel, 2:1 video switch ac characteristics figure 8. off crosstalk vs. frequency r on switch characteristics figure 9. r on switch on resistance, i on =13ma figure 10. r on switch on resistance, i on =26ma
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 7 fsav450 ? 800mhz, 4-channel, 2:1 video switch ac loadings and waveforms notes: 4. input drive by 50 ? source terminated in 50 ? . 5. c l includes load and stray capacitance. 6. input prr=1.0mhz, t w =500ns. figure 11. ac test circuit figure 12. ac waveforms figure 13. off isolation t est figure 14. crosstalk figure 15. bandwidth
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 8 fsav450 ? 800mhz, 4-channel, 2:1 video switch physical dimensions figure 16. 16-terminal depopulated quad very-thi n flat pack no leads (dqfn), jedec mo-241 package drawings are provided as a servic e to customers considering fairchild co mponents. drawings may change in any manner without notice. please note the revision and/or date on the drawi ng and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online pack aging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ . for current tape and reel specifications, visi t fairchild semiconductor?s online packaging area : http://www.fairchildsemi.com/ms/ms/ms-522.pdf.
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fsav450 ? rev. 1.0.3 9 fsav450 ? 800mhz, 4-channel, 2:1 video switch
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