eng pur mfg plan sm cc qa emc technology, inc cage code # 24602 dwg # 1009075000 1971 old cuthbert road change notice en 02-090 rev lvl c cherry hill, nj 08034 sheet 1 of 2 title: specification control drawing part identifier: ctva0x00n0xw3 x temperature coefficient of attenuation 1 x 10 -3 db/db/c. see table below attenuation shift negative x db value, see table below. tca db value -.007 2, 3, 4 -.009 2 -.011 1.5 description: : temperature variable chip attenuator. assembly dwg: 1901414 1.0 specifications: 1.1 electrical: 1.1.1 impedance: 75 ohms. 1.1.2 operating frequency range: dc - 2ghz. 1.1.3 attenuation value: see chart above. 1.1.4 attenuation accuracy at 25c: 0.5db @ 1 ghz . 1.1.5 vswr: 1:1 @ dc - 500 mhz, 1.15 @ 500 - 1000 mhz, 1.25:1 @ 1000 - 2000 mhz. 1.1.6 input power: negative shifting: 2 watts cw. 1.1.6.1 full rated power to 125 c, derated linearly to 0 watts at 150 c. 1.1.7 temperature coefficient over operating temperature range: see table above, temperature coefficient tolerance: 0.001 db/db/ c. 1.2 mechanical: 1.2.1 outline dwg: see sheet 2. 1.2.2 workmanship: per mil-prf-55342. 1.3 environmental: 1.3.1 operating temperature range: -55c to +150c 1.4 electrostatic discharge control: per mil-std-1686. 2.0 unit marking: db value (x) [adding ?r? denotes decimal point, if applicable, e.g. 1r5=1.5 db.], direction of shift (n) and tca shift (x). legibility and permanency per mil-std-130. 3.0 quality assurance: 3.1 sample inspect per ansi/asqc z1.4 general inspection, level ii, aql = 1.0. 3.1.1 visual and mechanical examination for conformance to outline drawing requirements. 3.2 sample inspection (destructive testing). 3.2.1 select three (3) units from lot and measure dca every 20c over the temperature range -55c to +125c. 3.2.1.1 calculate, using linear regression, the slope of the curve. 3.2.1.2 calculate tca using the following formula: tca = slope attenuation @ 25c 3.2.1.3 acceptance limits: per 1.1.7. 3.3 perform inspection in accordance with qa0006 and form0357 for commercial grade product. 3.4 test data requirements: 3.4.1 no test data required for customer. 3.4.2 data retention - 12 months 4.0 packaging: standard packing per mc0023.
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