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sgm9111 8mhz rail-to-rail composite video driver with 6db gain product description the sgm9111 is a single rail-to-rail 5-pole output reconstruction filter with a -3db bandwidth of 8mhz and 34.8v/s slew rate. operating from single power supply ranging from 3.0v to 5.5v and sinking an ultra-low 7ma quiescent current, the sgm9111 is ideally suited for low power, battery-operated applications. the sgm9111 employs an internal level shift circuit that avoids sync-pulse clipping and allows dc-coupled output. the sgm9111 is available in green soic-8 and sc70-5 packages. it is specified over the extended -40 to +85 temperature range. block diagram out sgm9111 5-pole filter 6db level shifter in v cc gnd v cc = 3.0v to 5.5v features ? low cost ? excellent video performance ? 5-pole reconstruction filter ? internal gain: 6db ? rail-to-rail output ? input voltage range includes ground ? ac- and dc-coupled input ? operates from 3.0v to 5.5v single power supply ? low power 7ma typical supply current ? available in green soic-8 and sc70-5 packages applications video amplifiers cable and satellite set-top boxes communication devices video on demand portable and handheld products personal video recorders dvd players hdtv rev. e. 1 sg micro corp www.sg-micro.com
8mhz rail-to-rail composite video driver with 6db gain 2 sg micro corp www.sg-micro.com sgm9111 package/ordering information order number package description temperature range package option marking information sgm9111ys/tr soic-8 -40 to +85 tape and reel, 2500 sgm9111ys sgm9111yc5/tr sc70-5 -40 to +85 tape and reel, 3000 9111 absolute maximum ratings supply voltage, v cc to gnd...................................................6v input voltage..... .............. ................... g nd - 0.3v to v cc + 0.3v storage temperature range .............................-65 to +150 junction temperature........................................................160 operating temperature range ............. ...............-40 to +85 lead temperature (soldering 10 sec) ?????????...........................................................260 esd susceptibility hbm.................... ..................... ...................... .................. 8000v mm......................................................................................400v note: stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the s pecifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. pin description name soic-8 pin sc70-5 pin function in 1 3 video input. gnd 3 1, 2 ground. v cc 7 5 power supply. out 8 4 filtered video output. nc 2, 4, 5, 6 ? no connect. caution this integrated circuit can be damaged by esd if you don?t pay attention to esd protection. sgmicro recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. sgmicro reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. please contact sgmicro sales office to get the latest datasheet. pin configurations (top view) soic-8 v cc out nc in 5 6 7 8 1 2 3 4 nc gnd nc nc sgm9111 nc = no connect 4 1 gnd 5 out 2 gnd sc70-5 in sgm9111 v cc 3
8mhz rail-to-rail composite video driver with 6db gain 3 sg micro corp www.sg-micro.com sgm9111 electrical characteristics: v cc = 5.0v (at r l = 150 ? connected to gnd, v in = 1v pp and c in = 0.1 f, all outputs ac-coupled with 220 f, referenced to 400khz, unless otherwise noted.) parameter conditions temp min typ max units input characteristics +25 352 480 output level shift voltage (v ols ) v in = 0v, no load -40 to +85 604 mv +25 -180 -109 input voltage clamp (v clamp ) i in = -3.5ma -40 to +85 -263 mv +25 -6.0 -4.8 clamp charge current v in = v clamp - 100mv -40 to +85 -6.3 ma +25 1.8 3.0 clamp discharge current v in = 500mv -40 to +85 3.2 a +25 5.6 6 6.4 voltage gain (a v ) r l = 150 ? -40 to +85 5.5 6.5 db output characteristics +25 4.6 4.78 output voltage high swing v in = 3.0v, r l = 150 ? to gnd -40 to +85 4.5 v +25 90 120 v in = 0.5v, out shorted to gnd through 10 ? -40 to +85 80 ma +25 -124 -100 output short-circuit current (i sc ) v in = 1.5v, out shorted to v cc through 10 ? -40 to +85 -88 ma power supply operating voltage range +25 3.0 5.5 v +25 45 51 power supply rejection ratio (psrr) v cc = 3.5v to 5.0v -40 to +85 42 db +25 7.0 9.5 quiescent current (i q ) v in = 0.5v -40 to +85 10.1 ma dynamic performance -0.1db bandwidth +25 5.56 mhz -1db bandwidth +25 6.6 mhz -3db bandwidth +25 7.76 mhz filter response (normalized gain) f in = 27mhz +25 42.4 db slew rate 2v output step, 80% to 20% +25 34.8 v/s pal dc-coupled +25 0.53 % differential gain error (dg) pal ac-coupled +25 0.47 % pal dc-coupled +25 1.30 differential phase error (dp) pal ac-coupled +25 1.47 group delay variation (d/dt) difference between 400khz and 6.5mhz +25 30.3 ns fall time 2v output step, 80% to 20% +25 34.5 ns rise time 2v output step, 80% to 20% +25 35.7 ns
8mhz rail-to-rail composite video driver with 6db gain 4 sg micro corp www.sg-micro.com sgm9111 typical performance characteristics at v cc = 5v, t a = +25 , r l = 150 ? , all outputs ac-coupled with 220 f, unless otherwise noted. frequency response -15 -12 -9 -6 -3 0 3 0.1 1 10 100 frequency (mhz) normalized gain (db) large signal step response -0.75 -0.5 -0.25 0 0.25 0.5 0.75 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 time ( s) output voltage (v) group delay vs. frequency -100 -50 0 50 100 0.1 1 10 100 frequency (mhz) group delay (ns) phase vs. frequency -270 -180 -90 0 90 180 270 0.1 1 10 100 frequency (mhz) phase (degree) small signal step response -0.3 -0.2 -0.1 0 0.1 0.2 0.3 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 time ( s) output voltage (v) quiescent current vs. supply voltage 2 3 4 5 6 7 8 3 3.5 4 4.5 5 5.5 supply voltage (v) quiescent current (ma)
8mhz rail-to-rail composite video driver with 6db gain 5 sgm9111 sg micro corp www.sg-micro.com typical performance characteristics at v cc = 5v, t a = +25 , r l = 150 ? , all outputs ac-coupled with 220 f, unless otherwise noted. quiescent current vs. temperature 4 5 6 7 8 9 10 -40 -15 10 35 60 85 temperature ( ) quiescent current (ma ) output voltage swing to the positive rail vs. output current 3.5 3.75 4 4.25 4.5 4.75 5 0 20406080100 output current (ma) output voltage (v) +8 5 -4 0 +25 gain error vs. temperature 0 0.2 0.4 0.6 0.8 1 1.2 1.4 -40 -15 10 35 60 85 temperature ( ) gain error (%) output voltage swi ng to the negative rai l vs. ou tp ut cu rren t 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 20406080100 output current (ma) output voltage (v) + 85 -4 0
8mhz rail-to-rail composite video driver with 6db gain 6 sgm9111 sg micro corp www.sg-micro.com application information functional description sgm9111 operates from a single 3.0v to 5.5v supply. in application, sgm9111 is a fully integrated solution for filtering and buffering sdtv signals in front of video decoder or behind video encoder. for example, sgm9111 can replace a passive lc filter and an amplifier driver at cvbs side in set-top box and dvd player. this solution can help reduce pcb size and production cost, and it also improves video signal performance comparing with traditional design using discrete components. sgm9111 features a dc-coupled input buffer, a 5-pole low-pass filter to eliminate out-of-band noise of video encoder, and a gain of 6db in the output amplifier to drive 75 ? load. the ac- or dc-coupled input buffer eliminates sync crush, droop, and field tilt. the output of sgm9111 also can be dc-coupled or ac-coupled. input considerations besides ac coupling, the sgm9111 inputs also can be dc-coupled. in dc coupling application, no input coupling capacitors are needed because the amplitude of input video signal from dac includes ground and extends up to 1.4v, and sgm9111 can be directly connected to the output of a single-supply, current-output dac without any external bias network. in applications where dac?s output level exceeds the range from 0v to 1.4v, or sgm9111 is driven by an unknown external source or a scart switch which has its own clamping circuit, ac coupling is needed. output considerations the sgm9111 outputs can be dc-coupled or ac-coupled. when input is 0v, the sgm9111 output voltage is 340mv typically. in dc coupling design, one 75 ? resistor is used to connect sgm9111?s output pin with external load directly, and this serial back- termination resistor is used to match the impedance of the transmission line between sgm9111 and external load to cancel the signal reflection. the sgm9111 outputs can sink and source current allowing the device to be ac-coupled with external load. in ac coupling, at least 220f capacitor will be used in order to eliminate field tilt. power-supply bypassing and layout correct power supply bypassing is very important for optimizing video performance in design. one 0.1f and one 10f capacitors are always used to bypass v cc pin of sgm9111. place these two capacitors as close to the sgm9111 supply pin as possible. a large ground plane is also needed to ensure optimum performance. the input and output termination resistors should be placed as close to the related pins of sgm9111 as possible to avoid performance degradation. the pcb traces at the output side should have 75 ? characteristic impedance in order to match the 75 ? characteristic impedance of the cable connecting external load. in design, keep the board trace at the inputs and outputs of the sgm9111 as short as possible to minimize the parasitic stray capacitance and noise pickup.
8mhz rail-to-rail composite video driver with 6db gain 7 sgm9111 sg micro corp www.sg-micro.com typical application diagram sgm9111 cvbs 75 in gnd out v cc 75 0.1f or 0.01f 10f +5v cvbs 0.1f 220f note: 1. power supply v cc must be sequenced on first before input video signals. figure 1. ac coupling application schematic
8mhz rail-to-rail composite video driver with 6db gain 8 sgm9111 sg micro corp www.sg-micro.com package outline dimensions sc70-5 e e1 e1 e d b a a2 a1 l c 0.20 l1 recommended land pattern (unit: mm) 1.9 0.65 1.3 0.75 0.4 dimensions in millimeters dimensions in inches symbol min max min max a 0.900 1.100 0.035 0.043 a1 0.000 0.100 0.000 0.004 a2 0.900 1.000 0.035 0.039 b 0.150 0.350 0.006 0.014 c 0.080 0.150 0.003 0.006 d 2.000 2.200 0.079 0.087 e 1.150 1.350 0.045 0.053 e1 2.150 2.450 0.085 0.096 e 0.65 typ 0.026 typ e1 1.300 bsc 0.051 bsc l 0.525 ref 0.021 ref l1 0.260 0.460 0.010 0.018 0 8 0 8
8mhz rail-to-rail composite video driver with 6db gain 9 sgm9111 sg micro corp www.sg-micro.com package outline dimensions soic-8 d e e1 e b a a2 a1 c l 1.27 0.6 2.2 5.2 recommended land pattern (unit: mm) dimensions in millimeters dimensions in inches symbol min max min max a 1.350 1.750 0.053 0.069 a1 0.100 0.250 0.004 0.010 a2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.006 0.010 d 4.700 5.100 0.185 0.200 e 3.800 4.000 0.150 0.157 e1 5.800 6.200 0.228 0.244 e 1.27 bsc 0.050 bsc l 0.400 1.270 0.016 0.050 0 8 0 8
8mhz rail-to-rail composite video driver with 6db gain 10 sgm9111 sg micro corp www.sg-micro.com tape and reel information note: the picture is only for reference. please make the object as the standard. key parameter list of tape and reel package type reel diameter reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p0 (mm) p1 (mm) p2 (mm) w (mm) pin1 quadrant sc70-5 7 9.5 2.25 2.55 1.20 4.0 4.0 2.0 8.0 q3 soic-8 13 12.4 6.4 5.4 2.1 4.0 8.0 2.0 12.0 q1 reel width (w1) reel diameter reel dimensions tape dimensions direction of feed p2 p0 w p1 a0 k0 b0 q1 q2 q4 q3 q3 q4 q2 q1 q3 q4 q2 q1
8mhz rail-to-rail composite video driver with 6db gain 11 sgm9111 sg micro corp www.sg-micro.com carton box dimensions note: the picture is only for reference. please make the object as the standard. key parameter list of carton box reel type length (mm) width (mm) height (mm) pizza/carton 7 (option) 368 227 224 8 7 442 410 224 18 13 386 280 370 5

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