? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 1 digital attenuator 15.5 db, 5-bit, ttl driver, dc-2.0 ghz rev. v7 AT-283-PIN advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. features ? attenuation: 0.5 db steps to 15.5 db ? temperature stability: 0.18 db from ?55c to +85c typical ? low dc power consumption ? hermetic surface mount package ? integral ttl driver ? 50 ? nominal impedance ? lead-free cr-12 package ? 260c reflow compatible ? rohs* compliant description m/a-com?s AT-283-PIN is a gaas fet 5-bit digital attenuator with a 0.5 db minimum step size and 15.5 db total attenuation. this attenuator and integral ttl driver is in a hermetically sealed ceramic 16 lead surface mount package. the AT-283-PIN is ideally suited for use where accuracy, fast switching, very low power consumption and low intermodula- tion products are required. typical applications in- clude dynamic range setting in precision receiver circuits and other gain/leveling control circuits. envi- ronmental screening is available. contact the fac- tory for information. ordering information part number package AT-283-PIN bulk packaging maad-007229-0001tr 1000 piece reel maad-007229-0001tb sample test board note: reference application note m513 for reel size information. functional schematic pin configuration pin no. function pin no. function 1 rf1 9 c5 2 gnd 10 +5v 3 gnd 11 -5v 4 gnd 12 c4 5 gnd 13 c3 6 gnd 14 c2 7 gnd 15 c1 8 rf2 16 gnd * restrictions on hazardous substanc es, european union directive 2002/95/ec. the metal bottom of the case must be connected to rf and dc ground.
? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 2 digital attenuator 15.5 db, 5-bit, ttl driver, dc-2.0 ghz rev. v7 AT-283-PIN advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. electrical specifications: t a = 25c 1 parameter test conditions units min typ max reference insertion loss dc-0.5 ghz dc-1.0 ghz dc-2.0 ghz db db db ? ? ? ? ? ? 2.2 2.5 2.9 attenuation accuracy 2 any single bit dc-2.0 ghz any combination of bits dc-2.0 ghz vswr dc-1.0 ghz dc-2.0 ghz ? ? ? ? ? ? 1.6:1 1.7:1 trise, tfall ton, toff transients 10% to 90% 50% control to 90/10% rf in-band (peak?peak) ns ns mv ? ? ? 10 27 22 ? ? ? 1 db compression 3 input power 0.05 ghz input power 0.5-2.0 ghz dbm dbm ? ? +20 +28 ? ? input ip 3 3 for two-tone input power 0.05 ghz up to +5 dbm 0.5-2.0 ghz dbm dbm ? ? +40 +47 ? ? input ip 2 3 for two-tone input power 0.05 ghz up to +5 dbm 0.5-2.0 ghz dbm dbm ? ? +53 +68 ? ? v cc v ee ? ? v v 4.5 -8.0 5.0 ? 5.5 -5.0 i cc v cc = 4.5 to 5.5v vctl = 0 to 0.8v, or v cc - 2.1v to v cc ma ? ? 5.0 (0.25 +3% of attenuation setting in db) db (0.25 +3% of attenuation setting in db) db or 0.4 db, whichever is greater i ee v ee = -5.0 to ?8.0v ma ? ? 1.0 vctl vctl logic 0 (ttl) logic 1 (ttl) v v 0.0 2.0 ? ? 0.8 5.0 input leakage current (low) input leakage current (high) 0 to 0.8v 2.0 to 5.0v a a ? ? ? ? 1.0 1.0 1. all specifications apply when operated with bias voltages of +5.0v for v cc and ?5.0v to -8.0v for v ee , and 50 ? impedance at all ports unless otherwise specified. 2. this attenuator is guaranteed monotonic. 3. v ee = -5.0v for the typical numbers given.
? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 3 digital attenuator 15.5 db, 5-bit, ttl driver, dc-2.0 ghz rev. v7 AT-283-PIN advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. recommended pcb configuration absolute maximum ratings 4,5 parameter absolute maximum maximum input power 0.05 ghz 0.5-2.0 ghz +27 dbm +34 dbm v cc -0.5v v cc +7.0v v ee -8.5v v ee +0.5v operating temperature -55c to +125c storage temperature -65c to +150c v cc - v ee -0.5v v cc - v ee 14.5v vin 6 -0.5v vin v cc + 0.5v 4. exceeding any one or combination of these limits may cause permanent damage to this device. 5. m/a-com does not recommend sustained operation near these survivability limits. 6. standard cmos ttl interface, latch-up will occur if logic signal is applied prior to power supply. handling procedures please observe the following precautions to avoid damage: static sensitivity gallium arsenide integrated circuits are sensitive to electrostatic discharge (esd) and can be damaged by static electric ity. proper esd control techniques should be used when handling these devices. truth table (digital attenuator) control inputs c1 c2 c3 c4 c5 attenuation 0 0 0 0 0 reference 1 0 0 0 0 0.5 db 0 1 0 0 0 1 db 0 0 1 0 0 2 db 0 0 0 1 0 4 db 0 0 0 0 1 8 db 1 1 1 1 1 15.5 db attenuation accuracy vs. frequency 0.5, 1, 2 db bits typical performance curves reference insertion loss vs. frequency @ temperature 0.0 1. 0 2.0 3.0 4.0 5.0 0 500 1000 1500 2000 fre qu e n cy (mh z ) insertion loss (db) +25c - 55c +85c -0.5 -0.3 0.0 0.3 0.5 0 500 1000 1500 2000 fre qu e n cy (mh z ) deviation from nom. atten. (db) 0 = ttl low; 1 = ttl high
? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 4 digital attenuator 15.5 db, 5-bit, ttl driver, dc-2.0 ghz rev. v7 AT-283-PIN advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. vswr vs. frequency reference loss, 0.5, 1, 2 db bits vswr vs. frequency 4, 8 db bits and full attenuation typical performance curves attenuation accuracy vs. frequency 4, 8 db bits and full attenuation -0.5 0.0 0.5 1. 0 0 500 1000 1500 2000 fre qu e n cy (mh z ) deviation from nom. atten. (db) full atten. 1. 0 1. 2 1. 4 1. 6 1. 8 2.0 0 500 1000 1500 2000 fre qu e n cy (mh z ) vswr 1. 0 1. 2 1. 4 1. 6 1. 8 2.0 0 500 1000 1500 2000 fre qu e n cy (mh z ) vswr lead-free, cr-12 ceramic package ? ? reference application note m 538 for lead-free solder reflow recommendations.
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