DBM-178High Level

SubminiatureFlatpack. DoubleBalanced Mixer

10-1500 MHz

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DESCRIPTIONDBM-178 double balanced mixercombines several state of the artteatures. It offers very high interceptpoint, typically + 25 dBm, very widebardwk1th and is constructed towithstand severe environments. It isrecommended for advanced newdesigns requiring exceptional signalhandling performance over wkjebardwldths, such as front-end mixerfor ~down convertors. The circuitryIs comprised of eight speciallymatched beamlead Schottky diCKJesand two rugged transmission linetransformers.

Each DBM-178 is sealed andindividually tested to Vari-L'sdemanding quality and performancespecifications.

,,-.LIMITED WARRANTYVari-L Company, Inc. warrants itsproducts against defects in parts andworkmanship for a period of one year

GUARANTEED MINIMUMPERFORMANCE DATATEST CONDITION:

La + 17 dBm (High side La)RF - 10dBmIF 100 MHz

NOTE:Specifications below, guaranteed with IF fromDC 10 500 MHz. For higher IF frequencies.consult IF response curve for typical rolloff.

OVERALL FREQUENCY RANGE IN MHz:L R X

10-1500 10-1500 DC-1500

FREQUENCY BANDS IN MHz:1 0- 1 00- 5(X}. 1 (XX).

100 500 1000 1500Conversion Loss 8.5 7.0 8.0 9.5L-R Isolation 40 30 30 30L-X Isolation 37 27 23 20R-X Isolation 35 23 20 12

ABSOLUTE MAXIMUM RATINGS:Operating T~. - 54 to + 100°CX.port Input Current 50 mATotal Input Power 400 mW @ + 25°CDerate linearly to 100 mW @ 100°C

DC POLARfTY:Negative with L aoo R port signals in-phsse.

- - - --VARI-L~. Inc. 11101 East 51 st Avenue Denver, CoIoraOO 80239 Phone: (303) 371-1~ TWX: 910-93200311

59

DBM-178High LevelSubminiatureFlatpack, DoubleBalanced Mixer10-1500 MHz

ENVIRONMENTALCON DITIONSGUARANTEED ENVIRONMENTALPERFORMANCE:All units are designed to meet theirspecifications over - 54.C to+ 100.C and after exposure to any orall of the following tests perMll-5TD-202E.

TYPICAL PERFORMANCEImpedance: All ports 50 ohms1 dB ~ression Point: + 13 dam1 dB Desensitization Point: + 11 dam3rd Order Intercept Point: + 25 damNoise Figure is within 1 dB of conversion asLO Power Range: + 10 to + 20 dBm

PACKAGECASE MATERIAL:F15 Kovar per ASTM StandardF-15-68, (Chemical Compositionper MIL-5TD-1216. Type K)

FINISH:Plating, all metal parts: gold perMIL-G-45204. Type I, Grade A.Class 1, over nickel perMIL-C-26074, Class 1

LEADS:Kovar per MIL-5TD-1276. Type K

1003) r_MAX

t-

mJ!l~41)

~.DIA.I,.

EXp08ureThermal ShockAltitudeH.F. VibrationMechanical ShockRandom Vibration

(15 ITWWI.. per .01S)

SolderabilityTerminal StrengthResistance to

Soldering Heat

Sealed units, meetof Method 1060 ofwhen exposed to h

(7.87) :.-.~_.,..I!::!!J.. L '«3~JJ _MAX. t".5'5MA~I (3.18)

E ~~~;i~~ *j" .- M.L~ ~

1Q.. .XXX t.-

.j:

~~

I-i-x 10 100 500

Frequency in MHl1CXX) 1~ 3XX)

VARI-l ~ny. Inc. 11101 East 51st Avenue Denver, Colorado 80239 Pha'8: (303) 371-1560 TWX: 910-932-031160

TeatMethod Condition

1070 8105C G204C 02138 C214 IIF

2O8C211A C

21OA Bthe requirementsMIL-STO-202E

umidity .