key: inches[millimeters] .xx ?03 .xxx ?010 [.x ?.8 .xx ?.25] attenuators, pin diode series df & ff ?hase-free 0.25?8 ghz general inform a tion: kdi/triangle s phase free pin diode attenuators change the amplitude of a microwave signal with matched (low) vswr over the full attenuation rang e, and with minimum phase shift change.the units are supplied with either an analog or with a digital control input, with a dynamic attenuation r ange of 32 db minimum .standard digital units are supplied with 8 ttl logic inputs (bits) and therefore can produce 256 discrete v alues of atten- uation.units with 10 or 12 bits can be provided as specials. general specific a tions: frequen c y ran g e: 0.25 to 18.0 ghz rf impedance: 50 ohms d.c.volt ag e: 15 volts at 50 ma logic : (dfseries) ttl compatible no .of bits: 8 l.s.b.= 0.125 db. attentuation: 31.875 db cont r ol ran g e: (ffseries) 0-10 volts produces 0-32 db.other control voltages can be provided on request. cont r ol input impedance 10 k ohms, 20 pf accura c y/frequen c y flatnes s for octave models , the frequency sensi- tivity including digital settability is typically 0.8 db to 20 db; 1.25 db to 32 db over the frequency range.narrow band units are proportionally more accurate. rf po wer: 100 mw cw 60 watts peak operational. units will not be damaged by application of 1 watt cw 100 watts peak. temperature in f ormation: oper ating temperature from -55? to +85? temperature stability: a) standard: ?.3 db from + 10 c to +40? b) 0.5 db to 20 db and ?.75 db to 32 db can be pro vided from -54? to +85 c.if this stability is desired, add a suffix tt to model numbe r.for example, if the df-74 is desired with temperature compensation, it is ordered as df-74-tt. connecto r s: sma standard. a mating multipin connector can be supplied with each unit upon request. itt cannon mdb-1-15ssl or equivilent. swit c hing speed: response time of all models is 10 microsec.faster models (to 150 nanosec.) can be quoted on request. linearization: any of the models ?f can be supplied with a linearizer by adding a prefix 2.for example, if the ff-47 is desired with a linearizer, it is ordered as a 2-ff-47.the overall accur acy including linearity and frequency sensitivity is then ?.75 db to 20 db and ?.25 db to 32 d b. power logic pin connections .10 [2,5] e d b a/2 .38 [9,7] typ .32 [8,2] typ f rf power/logic c a .20 [5,0] rf pin #1 ref .56 [14,2] itt cannon mdb1-15psp or equiv. .125/[3,20] dia thru 3 mtg holes digita l model s (df series) notes: 1.harmonic distortion:approximately ?0 dbc for pin 0 dbm at a frequen- cy of 1.0 ghz for most units.this value improves by approximately 10 db per octave as the frequency increases;how ever, since this v alue is depen- dent on bandwidth of the unit, po wer input, and switching speed required, the factory should be consulted if harmonic content is an important system requirement. 2.the phase shift over the center half of the frequency range is 1/2 of the value listed, e.g.: the phase shift of the ff-47 is ? from 2.5 to 3.5 ghz (0?0 db).see fig.2 3.other configurations (up to 12 bits) or units with different attenuation values can be quoted on request. out- a b c d e f g line in[mm] in[mm] in[mm] in[mm] in[mm] in[mm] in[mm] 1 4.00[101,6] 4.00[10,1] 3.600[91,4] 3.375[85,72] 0.38[9,65] 0.39[9,90]0.32[8,12] 2 3.00[76,2] 2.00[50,8] 2.600[66,04] 1.375[34,92] 0.35[8,9] 0.25[6,4] 0.32[8,12] 3 4.00[101,6] 2.00[50,8] 3.600[91,4] 3.375[85,72] 0.45[11,4] 0.25[6,4] 0.34[8,6] 4 4.50[114,3] 4.00[101,6] 4.100[104,14] 3.375[85,72] 0.31[7,87] 0.31[7,87] 5 3.50[88,9] 2.00[50,8] 3.100[78,74] 1.375[34,92] 0.40[10,2] 0.28[7,11] 6 4.50[114,3] 2.00[50,8] 4.100[104,14] 1.375[34,92] 0.45[11,4] 0.25[6,4] pin function 1-12 logic inputs 13 +15 vdc 14 -15 vdc 15 gnd 8-10-07 60 south jefferson road, whippany, nj 07981 tel: 973-887-8100 ?fax: 973-884-0445 email: sales@aeroflex-kdi.com see us on the web @ www.aeroflex-kdi.com
key: inches[millimeters] .xx ?03 .xxx ?010 [.x ?.8 .xx ?.25] attenuators, pin diode series df & ff ?hase-free 0.25?8 ghz df series vswr least insertion for all maximum phase analog digital fr equency significant atten. loss values of shift model model* range df ff bit db range maximum atten. deg. no. no. ghz outline outline note 3 maximum db db maximum 0?0 db 20?2 db df-18 ff-18 0.25?.5 4 1 .125 32 4.5 1.5 10 15 df-32 ff-32 0.95?.25 4 1 .125 32 3.0 1.5 5 7.5 df-36 ff-36 1.0?.0 6 3 .125 32 4.0 1.5 10 15 df-45 ff-45 1.7?.4 6 3 .125 32 3.5 1.5 6 10 df-47 ff-47 2.0?.0 6 3 .125 32 3.0 1.5 10 15 df-62 ff-62 4.0?.0 5 2 .125 32 3.75 1.75 12 15 df-73 ff-73 7.0?2.4 5 2 .125 32 4.25 1.8 12 15 df-74 ff-74 8.0?8.0 5 2 .125 32 5.5 2.2 15 20 specifica tions c a sma female typ. b d a/2 0.38 [09,7] typ. f note:either rf connector may be used for input e 0.20[5,1] 0.125[3,18] dia thru 3 mtg. holes 0.10[2,5] .56[14,22] g gnd -15v +15v con- trol rf a n al og model s (ff series) 0 2 5 8 10 0 5 10 15 20 30 32 25 control voltage (v) attenuation (db) non linearized linearized best fit straight line typical curve of attenuation vs control voltage fig. 1 0.5 db typical curve of ff-18 or df-18 at max. attenuation (32 db) typical curve of ff-45 or df-45 at max. attenuation (32 db) typical curve of ff-18 or df-18 at 20 db attenuation typical curve of ff-45 or df-45 at 20 db attenuation ref. phase at zero attenuation for ff-18 or df-18 and ff-45 or df-45 -15 -12 -9 -6 -3 0 +3 +6 +9 +12 +15 fmin f0 fmax frequency phase shift vs frequency at various attenuation levels transmission phase (degrees) *add prefix ? for linearization add suffix ?t for temp comp;-55 to +85 8 c 8-10-07 60 south jefferson road, whippany, nj 07981 tel: 973-887-8100 ?fax: 973-884-0445 email: sales@aeroflex-kdi.com see us on the web @ www.aeroflex-kdi.com
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