MC44BC380 ordering information device temp. range package MC44BC380d, r2 -20c to +85c so8nb note: for tape and reel, add r@ suffix. so8 package this document contains information on a product under development. motorola reserves the right to change or discontinue this product without notice. ? motorola, inc., 2002. all rights reserved. this modulator circuit is for use in vcrs, set top boxes, and similar devices. figure 1 shows the pin connections. figure 1. pin connections 1 2 3 45 6 7 8 gnd ant1 ant2 vcrtu vcrvcc tvovcc tvout gnd technical data MC44BC380/d rev. 1.3 09/2002 MC44BC380 vhf/ uhf antenna booster/splitter ic 1 features.............2 2functional description 3 3 maximumratings .....3 4 antenna/booster splitter electrical characteristics 4 5 icblockdiagram .....6 6 diagrams ............7
2 MC44BC380 technical data motorola features 1 features this circuit is developed using motorola rf bicmos technology. with a transmit frequency of 18ghz, the antenna booster/splitter allows high rf performance at low cost. the antenna booster/splitter function boosts the antenna signal, then splits it into two (2) 75 ohm outputs for the tv and auxiliary outputs. main applications are for: ? set-top box (stb) vcr tuner piptv videogames rf output of the stb or vcr is added to the boosted received antenna signal. the MC44BC380 has the following features: frequency operation range (40mhz to 880mhz) extremely low external component count low power consumption (35ma typical) balanced inputs for low distortion balanced amplifiers for maximum isolation
functional description motorola MC44BC380 technical data 3 2 functional description figure 2 is a simplified block diagram, which shows the basic circuit functionality. the MC44BC380 has separate vccs and a maximum grounding pattern to ensure high performance in terms of isolation and leakage. the MC44BC380 comes in an so8 package and has a minimum pin count, which reduces cost and application board space. note: a balun is required at the input to achieve the stated performance. figure 2. simplified block diagram?MC44BC380 3 maximum ratings 8 vcrtu 7 vcrvcc 6 tvovcc 5 tvout 1 gnd 2 ant1 3 ant2 4 gnd 5db 75 ? 75 ? vcc sym parameter value unit vcc1 supply voltage 6 v tamin minimum operating ambient temperature ?10 o c tamax maximum operating ambient temperature 75 o c tstgmin minimum storage temperature ?65 o c tstgmax maximum storage temperature 150 o c this device contains protection circuitry to guard against damage due to high static voltage or electric fields. however, precautions must be taken to avoid ap- plications of any voltage higher than maximum rated voltages to this high impedance circuit. for proper oper- ation, input and output voltages should be constrained to the ranges indicated in the recommended operating conditions. aximum ratings are those values beyond which damage to the device may occur. for functional peration, voltage should be restricted to the recommended operating condition.
4 MC44BC380 technical data motorola antenna/booster splitter electrical characteristics 4 antenna / booster splitter electrical characteristics 4.1 parameter type 4.2 specification conditions unless otherwise stated: v cc =5.0v, ambient temperature=25 o c, all outputs into 75ohm load. all specifications use a balun at ant1, 2 inputs, assuming a 0.8db max loss from 40mhz to 880mhz. a: 100% tested c: characterized on samples b: 100% correlation tested d: design parameter table 1. specification conditions ref parameter test conditional min typ max unit type vcc supply voltage 4.5 5 5.5 v iccb bst section supply current 28 35 42 ma frequency range 40 880 mhz gvgt gain ant1, 2 to vcrtu ant1, 2 to tvout 5 5 db gain flatness 40 to 880mhz ?1.2 + 1.2 db noise figure ant1, 2 to vcrtu and ant1, 2 to tvout 79.5db vswr all pins, bst bias on at tvout and vcrtu, bst bias off 1.5 2 ? at antin pins. bst off. 2.5 3 ? intermodulation (imd) input level=90dbuv see imd measurement 45 dbc isolation from tvout or vcr to ant1, 2 tvout/vcrtu from 40mhz to 600mhz 1 1. output-to-output isolation is dependant on printed circuit board (pcb) layout and vcc line dc-coupling. see application records and pcb layout proposal. 45 30 50 45 dbc
antenna/booster splitter electrical characteristics motorola MC44BC380 technical data 5 4.3 intermodulation ( imd ) measurement intermodulation frequencies are all frequency combinations coming from the two input carriers f1 and f2:f2?f1, 2*f1?f2, 2*f2?f1 and f1+f2, falling into the 40mhz to 900mhz range. intermodulation (imd) measurement is the difference (in dbc) between f1 or f2 level at the output (vcrtu or tvout) and spurious level, for all the following cases: f1 and f2 input levels are set to 90dbuv. spurious specification is the worst case imd measurement. f1=50mhz and f2=60mhz f1=100mhz and f2=110mhz f1=200mhz and f2=210mhz f1=300mhz and f2=310mhz f1=400mhz and f2=410mhz f1=500mhz and f2=510mhz f1=600mhz and f2=610mhz f1=700mhz and f2=710mhz f1=800mhz and f2=810mhz f1 f2 MC44BC380 75/50 balun tvout vcrtu pin 5 pin 8 50/75 75/50 90dbuv f1 f2 f1 f2 2f2?f1 2f1?f2 f2?f1 f1+f2 imd (dbc) spectrum analyzer
6 MC44BC380 technical data motorola ic block diagram 5 ic block diagram 5.1 proposed booster / splitter schematic figure 3. proposed booster/splitter schematic 5.1.1 components 1nf capacitors: c1, c2, c3, c4, c5, c6, c8 10nf capacitor: c7 application dependant: l1, l2, r1, r2 5.1.2 recommendations a balun is required for this application a single-sided pcb has been used to evaluate the device performance. decoupling capacitors c5 and c6 decrease coupling between tvout and vcrtu through the vcc line (bonding and pcb coupling) and increase tvout to vcrtu isolation (see proposed pcb layout). pull-ups to vcc may be needed on tvout and vcrtu pins to improve spurious performance at low vcc (1uh in series with 75 ? ). resistive pull-ups can also be used to decrease gain and increase spurious performance. for example, 267ohms reduces gain by about 1db and increases imd value by 2 to 6db. trade-off depends on application requirements. this document contains information on a new product under development. motorola reserves the right to change or discontinue this product without notice. 1 2 3 45 6 7 8 tvout vcrtu o o antin o c1 c2 c5 c6 c7 c8 vcc o balun vcc o r2 l2 vcc o r1 l1 c3 c4
diagrams motorola MC44BC380 technical data 7 6diagrams 6.1 proposed single-sided pcb layout figure 4. proposed single-sided pcb layout component side trace side
8 MC44BC380 technical data motorola diagrams figure 5. diagram?so8 package dim millimeters inches min max min max a 1.35 1.75 0.053 0.069 a1 0.1 0.25 0.003 0.010 d 4.8 5 0.188 0.197 e 5.8 6.2 0.228 0.244 e1 3.8 4 0.149 0.157 b 0.35 0.49 0.013 0.019 c 0.19 0.25 0.007 0.010 e 1.27 bsc 0.050 bsc h 0.25 0.5 0.009 0.020 l 0.4 1.25 0.015 0.049 q 0 o 7 o 0 o 7 o note: 1. dimensioning and tolerancing per ansi y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimensions d and e1 do not include mold protrusions. 4. maximum mold protrusion is 0.15 (0.006) per side. 5. dimension b does not include dambar protrusion. allowable dambar protrusion shall be 0.127 total in excess of b dimen- sion at maximum material condition. ld narrow body?150 mil pkg?1.27 pitch pod
diagrams motorola MC44BC380 technical data 9
MC44BC380/d how to reach us: usa/europe/locations not listed: motorola literature distribution; p.o. box 5405, denver, colorado 80217 1-303-675-2140 or 1-800-441-2447 japan: motorola japan ltd.; sps, technical information center, 3-20-1, minami-azabu minato-ku, tokyo 106-8573 japan 81-3-3440-3569 asia/pacific: motorola semiconductors h.k. ltd.; silicon harbour centre, 2 dai king street, tai po industrial estate, tai po, n.t., hong kong 852-26668334 technical information center: 1-800-521-6274 home page: http://www.motorola.com/semiconductors information in this document is provided solely to enable system and software implementers to use motorola products. there are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ?typical? parameters which may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and the stylized m logo are registered in the u.s. patent and trademark office. all other product or service names are the property of their respective owners. motorola, inc. is an equal opportunity/affirmative action employer. ? motorola, inc. 2002
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