nec's 870 mhz gaas catv power doubler amplifier outline dimensions (units in mm) p ackage outline h02 features ? gaas active devices ? low distortion ? high linear gain: mc-7881 - gl = 18 db min at f = 870 mhz mc-7882 - gl = 20 db min at f = 870 mhz MC-7883 - gl = 22 db min at f = 870 mhz mc-7884 - gl = 25 db min at f = 870 mhz ? low return loss ? low gain change over tempera ture ? specified for 79, 110, and 132 channels performance ? high reliability and ruggedness: withstands environmental extremes as well as silicon devices (surge, esd, etc.) v dd 9 1 in out gnd 2378 2.54 0.38 21.5 max 12.9 max 6-32 unc 2b 2.54 0.25 123 5 789 4.19 0.13 14.85 max 4.25 + 0.25 - 0.35 4.0 0.25 5 10.75 0.25 27.5 max 38.1 0.25 45.08 max 0.51 0.05 0.51 0.05 2.62 0.35 3.2 max a 0.38.. a 25.4 0.25 19.05 0.38 8.1 max 2.5 6.3 0.05 applications ?c a tv headend systems ?c a tv optical nodes ?c a tv distribution amps mc-7882 MC-7883 mc-7884 mc-7881 electrical characteristics (t a = 305 c, v dd = 24 v, z s = z l = 75 ? ) part number mc-7881 mc-7882 MC-7883 mc-7884 symbols characteristics units min typ max min typ max min typ max min typ max test conditions bw frequency range mhz 50 ? 870 50 ? 870 50 ? 870 50 ? 870 g l linear gain db 18.0 ? 19.0 20.0 ? 21.0 22.0 ? 23.0 25.0 ? 26.0 f = 870 mhz s gain slope db 0.2 0.6 1.0 0.4 0.8 1.2 0.6 1.0 1.4 0.6 1.0 1.4 f = 40 to 870 mhz gf gain flatness db ? ? 0.6 ? ? 0.6 ? ? 0.6 ? ? 0.6 40 to 870 mhz; peak to valley nf noise figure 1 db ? ? 6.5 ? ? 6.0 ? ? 5.5 ? ? 5.0 f = 50 mhz noise figure 2 ? ? 7.0 ? ? 6.5 ? ? 6.0 ? ? 5.5 f = 870 mhz rli input return loss db 20.0 ? ? 20.0 ? ? 20.0 ? ? 20.0 ? ? 40 to 160mhz 19.0 ? ? 19.0 ? ? 20.0 ? ? 20.0 ? ? 160 to 320 mhz 17.5 ? ? 17.5 ? ? 19.0 ? ? 19.0 ? ? 320 to 640 mhz 16.0 ? ? 16.0 ? ? 17.0 ? ? 17.0 ? ? 640 to 870 mhz rlo output return loss db 20.0 ? ? 20.0 ? ? 20.0 ? ? 20.0 ? ? 40 to 160mhz 19.0 ? ? 20.0 ? ? 20.0 ? ? 20.0 ? ? 160 to 320 mhz 17.5 ? ? 19.0 ? ? 19.0 ? ? 19.0 ? ? 320 to 640 mhz 16.0 ? ? 18.0 ? ? 18.0 ? ? 18.0 ? ? 640 to 870 mhz continued on next page description nec's mc-7881, mc-7882, MC-7883, and mc-7884 are gaas multi-chip modules designed for use as output stages in ca tv applications up to 870 mh z . the only difference between these devices is gain, which is 18 db, 20 db, 22 db, and 25 db respectively. because these units are gaas devices they have low distortion, low noise figure, and low return loss across the entire frequency band. like the previous generation of products, these devices sur- vive such hazards as surge and esd as well as their silicon competitors, but deliver superior performance with low dc current required. all devices are assembled and tested using fully automated equipment to maximize consistency in part to part performance, and reliability is assured by nec's strin- gent quality and process control procedures. these parts come in industry compatible hybrid packages.
mc 7881, 7882, 7883, 7884 absolute maximum ratings 1 (t case = 25 c) symbols parameters units ratings v dd supply voltage v 30 v i input voltage (single tone) 2 dbmv 65 t c operating case temperature c -30 to +100 t stg storage temperature c -40 to +100 note: 1. operation in excess of any one of these parameters may result in permanent damage. 2. maximum single channel power applied to the input for 1 minute with no measurable degradation in performance. symbols parameters units min typ max v dd supply voltage v 23.5 24.0 24.5 v i input voltage 1 , mc-7881 dbmv ? 36.0 39.0 mc-7882 ? 34.0 37.0 MC-7883 ? 32.0 35.0 mc-7884 ? 29.0 32.0 t c operating case c -30 +25 +85 t emperature recommended operating conditions (z s = z l = 75 ? ) note: 1. test conditions: 110 channels, 10 db tilted across the band. 1. the space between pc board and root of the lead should be kept more than 1 mm to prevent undesired stress on the lead and also should be kept less than 4 mm to prevent undesired parasitic inductance. recommended space is 2.0 to 3.0 mm typical. 2. recommended torque strength of the screw is 59 to 78 ncm. 3. form the ground pattern as wide as possible to minimize ground impedance. (to prevent undesired oscillation) all the ground pins must be connected together with wide ground pattern to decrease impedance difference. notes on correct use this product should be soldered in the following recommended conditions. other soldering methods and conditions than the recommended conditions are to be consulted with our sales representatives. recommended soldering conditions soldering soldering condition method conditions symbol pin part heating pin area temperature: less ? than 260c 1 hour: within 2 sec./pin note. 1. the point of pin part heating must be kept at a distance of more than 1.2 mm from the root of lead. note: 1. measured per us standard methods and procedures (using selective level meter). electrical characteristics, cont. (t a = 305 c, v dd = 24 v, z s = z l = 75 ? ) part number mc-7881 mc-7882 MC-7883 mc-7884 symbols characteristics units min typ max min typ max min typ max min typ max test conditions i dd operating current ma 310 ? 360 310 ? 360 310 ? 360 310 ? 360 rf off ctb composite triple beat dbc ? ? -60 ? ? -60 ? ? -60 ? ? -60 110 channels, xmod cross modulation 1 dbc ? ? -55 ? ? -55 ? ? -55 ? ? -55 v out = 52 dbmv at cso composite second order dbc ? ? -63 ? ? -63 ? ? -63 ? ? -63 745.25 mhz , 10 db tilted across the band part number package quantity mc-7881 7-pin special with heatsink 50pcs max/ tray mc-7882 7-pin special with heatsink 50pcs max/ tray MC-7883 7-pin special with heatsink 50pcs max/ tray mc-7884 7-pin special with heatsink 50pcs max/ tray ordering information life support applications these nec products are not intended for use in life support devices, appliances, or systems where the malfunction of these prod ucts can reasonably be expected to result in personal injury. the customers of cel using or selling these products for use in such applications do so at their own risk and agree to fully indemnify cel for all damages resulting from such improper use or sale. a business partner of nec compound semiconductor devices, ltd . 03/16/2003
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