? 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 30.0 db, 4-bit, ttl driver, dc-2.5 ghz rev. v5 at90-0233 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: 2 db steps to 30 db ? low dc power consumption ? small footprint, jedec package ? integral ttl driver ? 50 ohm impedance ? test boards available ? tape and reel packaging available ? csp-1 package description m/a-com?s at90-0233 is a gaas fet 4-bit digital attenuator with integral driver. step size is 2 db pro- viding a 30 db attenuation range. this device is in an pqfn plastic surface mount package. the at90-0233 is suited for use where accuracy, fast speed, very low power consumption and low costs are required. . ordering information part number package at90-0233 bulk packaging AT90-0233TR 1000 piece reel at90-0233-tb sample test board note: reference application note m513 for reel size information. schematic with off-chip components pin configuration pin no. function pin no. function 1 gnd 17 n/c 2 c16 18 n/c 3 c8 19 n/c 4 c4 20 n/c 5 c2 21 n/c 6 gnd 22 n/c 7 gnd 23 n/c 8 n/c 24 n/c 9 n/c 25 n/c 10 n/c 1 26 gnd 11 gnd 27 rf2 12 rf1 28 gnd 13 gnd 29 n/c 1 14 n/c 30 v ee 15 n/c 31 n/c 16 n/c 32 v cc 1. pins 10 and 29 must be isolated. 2. the exposed pad centered on the package bottom must be connected to rf and dc ground. (for pqfn packages)
? 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 30.0 db, 4-bit, ttl driver, dc-2.5 ghz rev. v5 at90-0233 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 parameter frequency units min typ max insertion loss dc - 2.5 ghz db ? 2.7 3.0 attenuation accuracy dc - 2.5 ghz db ? ? (.3 +5% of atten setting) vswr dc - 2.5 ghz ratio ? 1.5:1 1.8:1 switching speed ? ? ns ns ? ? 75 20 150 50 1 db compression 50 mhz 0.5 - 2.5 ghz dbm dbm ? ? +21 +29 ? ? input ip 3 50 mhz 0.5 - 2.5 ghz db db ? ? +35 +48 ? ? vcc vee ? ? v v 4.75 -8.0 5.0 -5.0 5.25 -4.75 v il v ih v v 0.0 2.0 ? ? 0.8 5.0 lin (input leakage current) ua -1.0 ? 1.0 test conditions ? individual bits or combination of bits full range 50% cntl to 90%/10% rf 10% to 90% or 90% to 10% ? ? two-tone inputs up to +5 dbm ? ? low-level input voltage high-level input voltage vin = v cc or gnd icc (quiescent supply current) vcntrl = v cc or gnd ua ? 250 400 icc (additional supply current per ttl input pin) v cc = max, vcntrl = v cc - 2.1 v ma ? ? 1.0 thermal resistance jc ? ? c/w ? 15 ? i ee v ee min to max, vin = v il or v ih ma -1.0 -0.2 ? recommended pcb configuration 6 absolute maximum ratings 3,4 parameter absolute maximum max. input power 0.05 ghz 0.5 - 2.5 ghz +27 dbm +34 dbm v cc -0.5v v cc +7.0v v ee -8.5v v ee +0.5v v cc - v ee -0.5v v cc - v ee 14.5v vin 5 -0.5v vin v cc + 0.5v operating temperature -40oc to +85oc storage temperature -65oc to +125oc 3. exceeding any one or combination of these limits may cause permanent damage to this device. 4. m/a-com does not recommend sustained operation near these survivability limits. 5. standard cmos ttl interface, latch-up will occur if logic signal is applied prior to power supply. 6. application note c2083 is available on line at www.macom.com
? 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 30.0 db, 4-bit, ttl driver, dc-2.5 ghz rev. v5 at90-0233 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 @ insertion loss attenuation error, 2 db bit attenuation error, 4 db bit typical performance curves insertion loss 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. moisture sensitivity the msl rating for this part is defined as level 2 per ipc/jedec j-std-020. parts shall be stored and/or baked as required for msl level 2 parts. truth table (digital attenuator) c16 c8 c4 c2 attenuation 0 0 0 0 loss, reference 0 0 0 1 2.0 db 0 0 1 0 4.0 db 0 1 0 0 8.0 db 1 0 0 0 16.0 db 1 1 1 1 30.0 db 0 = ttl low; 1 = ttl high 1. 0 0 1. 5 0 2.00 2.50 3.00 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) attenuation (db) 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) vswr input output -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) attenuation (db) -0.40 -0.20 0.00 0.20 0.40 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) attenuation (db)
? 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 30.0 db, 4-bit, ttl driver, dc-2.5 ghz rev. v5 at90-0233 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. attenuation error, 16 db bit attenuation error, max. attenuation vswr, 2 db bit vswr, 4 db bit vswr, 8 db bit attenuation error, 8 db bit -0.40 -0.20 0.00 0.20 0.40 0 500 1000 1500 2000 2500 frequency (mhz) attenuation (db) -0.80 -0.60 -0.40 -0.20 0.00 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) attenuation (db) -1.50 -1.00 -0.50 0.00 0.50 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) attenuation (db) 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 frequency (mhz) vswr output input 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) vswr output input 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 frequency (mhz) vswr output input typical performance curves
? 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. 5 digital attenuator 30.0 db, 4-bit, ttl driver, dc-2.5 ghz rev. v5 at90-0233 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, maximum attenuation vswr, 16 db bit 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 fre qu e n cy (mh z ) vswr output input 1. 0 0 1. 2 0 1. 4 0 1. 6 0 0 500 1000 1500 2000 2500 frequency (mhz) vswr output input csp-1, 4 x 6 mm, 32-lead pqfn ? ? reference application note m 538 for lead-free solder reflow recommendations. typical performance curves
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