75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 1 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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 ? 75 ? impedance ? integrated ttl/cmos compatible driver ? parallel & serial (p/s) control with power-up state selection ? 0.5-db attenuation steps to 31.5 db ? low dc power consumption ? lead-free 4mm pqfn-24ld plastic package ? halogen-free ?green? mold compound ? rohs* compliant and 260c re-flow compatible description the maad-008866 is a 6-bit, 0.5-db step gaas digital attenuator in a lead-free 4mm pqfn-24ld surface mount plastic package. the maad-008866 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. this part can be used in all 75 ? systems operating up to 1 ghz. functional schematic 5 5. blocking capacitors are required on all rf ports pin configuration pin no. function pin no. function 1 parallel / serial select 13 rf output 2 clock 14 no connect 3 serial data in 15 serial data out 4 latch enable 16 power up state 2 5 gnd 17 power up state 1 6 rf input 18 bias voltage 7 rf gnd 19 b5 8 rf gnd 20 b4 9 rf gnd 21 b3 10 rf gnd 22 b2 11 rf gnd 23 b1 12 rf gnd 24 b0 25 paddle 6 part number package MAAD-008866-TR3000 3000 piece reel maad-008866-001smb sample board * restrictions on hazardous substanc es, european union directive 2002/95/ec. rf gnd rf gnd rf gnd rf gnd rf gnd rf gnd absolute maximum ratings 3,4 parameter absolute maximum input power 50 mhz 1000 mhz +15 dbm +27 dbm operating voltage +8.5 v operating temperature -40c to +85c storage temperature -65c to +150c control voltage -0.5 v < v c < 5.5 v 3. exceeding any one or combination of these limits may cause permanent damage to this device. 4. m/a-com technology solutions does not recommend sustained operation near these survivability limits. 6. the exposed pad centered on the package bottom must be connected to the rf and dc ground. ordering information 1,2 1. reference application note m513 for reel size information. 2. all sample boards include 5 loose parts.
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 2 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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 7,8 : t a = 25c, z 0 = 75 ? , v dd = 5 v, v c = 5 v parameter test conditions units min. typ. max. reference insertion loss 5 mhz 50 mhz 500 mhz 1000 mhz db ? ? ? ? 1.3 1.35 1.6 1.8 ? ? ? 2.3 attenuation accuracy any bit or combination 5 - 1000 mhz (0.15 db + 4% of attenuation setting in db) return loss 5 - 1000 mhz db ? 18 ? trise, tfall 10% to 90% rf, 90% to 10% rf ns ? 320 ? ton, toff 50% control to 90 / 10% rf ns ? 340 ? transients in band mv ? 88 ? input p1db 50 mhz 1000 mhz dbm ? 12 25.6 ? iip3 0 dbm/tone at input, 6 mhz spacing 50 mhz 1000 mhz dbm ? 33 43 ? composite triple beat, ctb 132 channels, +30 dbmv/channel at the input dbc ? 88 ? composite second order, cso 132 channels, +30 dbmv/channel at the input dbc ? 69 ? steady state i dd v dd = +5 v a ? 4 ? iip2 0 dbm/tone at input, 6 mhz spacing 50 mhz 1000 mhz dbm ? 51 74 ? 7. external dc blocking capacitors are required on all rf ports. loss varies at 0.003 db/c. 8. low frequency is determined by dc block and rf gnd capacitor value. truth table 9 b5 b3 b2 b1 attenuation (db) 1 1 1 1 reference il 1 1 0 1 2 1 0 1 1 4 1 1 1 1 8 0 1 1 1 16 0 0 0 0 31.5 b4 1 1 1 0 1 0 b0 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1 0 0.5 9. 0 = 0 to 0.8v, 1 = 2 to 5v. application 10 10. capacitors c3 - c8 should be as close to package pins as possible.
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 3 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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 off-chip component values component value package c1 & c2 0.1 f 0402 c3 - c8 0.1 f 0201 c9 0.01 f 0402 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 electricity. proper esd control techniques should be used when handling these devices. an external protection circuit using an inexpensive anti-parallel diode pair can be used to protect the ic. please reference application note an3028 on http://www.macomtech.com for further detail. lead free 4 mm 24-lead pqfn ? ? reference application note m538 for lead-free solder reflow recommendations. meets jedec moisture sensitivity level 1 requirements. plating is 100% matte tin over copper.
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 4 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. typical performance curves relative attenuation across all major states insertion loss input return loss, across all attenuation states ou tput return loss, across all attenuation states -35 -30 -25 -20 -15 -10 -5 0 0.0 0.2 0.4 0.6 0.8 1.0 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.0 0.2 0.4 0.6 0.8 1.0 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.0 0.2 0.4 0.6 0.8 1.0 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -2.4 -2.0 -1.6 -1.2 -0.8 -0.4 0.0 0.0 0.2 0.4 0.6 0.8 1.0 +25c -40c +85c frequency (ghz)
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 5 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. typical performance curves @ 5 volts step error vs. state over temp @ 1000 mhz step error vs. state over temp @ 500 mhz step error vs. state over frequency step error vs. state over temp @ 5 mhz -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 4 8 12 16 20 24 28 32 +25c -40c +85c state (db) -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 4 8 121620242832 +25c -40c +85c state (db) -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 4 8 121620242832 +25c -40c +85c state (db) -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 4 8 121620242832 5 mhz 50 mhz 500 mhz 1000 mhz state (db)
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 6 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. typical performance curves @ 5 volts iip3 vs. frequency @ +85c iip3 vs. frequency @ -40c iip3 vs. frequency @ 25c iip2 vs. frequency @ +85c iip2 vs. frequency @ -40c iip2 vs. frequency @ 25c 0 10 20 30 40 50 60 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz) 0 10 20 30 40 50 60 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz) 0 10 20 30 40 50 60 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz) 0 10 20 30 40 50 60 70 80 90 100 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz) 0 10 20 30 40 50 60 70 80 90 100 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz) 0 10 20 30 40 50 60 70 80 90 100 0 200 400 600 800 1000 il 0.5 db 1 db 2 db 4 db 8 db 16 db frequency (mhz)
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 7 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. functionality modes of operation: serial, direct parallel, and latched parallel mode truth table p/s le mode 1 x serial 0 constant high direct parallel 0 pulsed latched parallel serial mode direct parallel mode latched parallel mode the serial control interface (serin, clk, le, serout ) is compatible with the spi protocol. spi mode is activated when p/s is kept high. the 6-bit serial word must be loaded with msb first. after shifting in the 6 bit word, bringing le high will set the attenuator to the desired state. while le is high the clk is masked to protect the data while implementing the change . serou t is the serin delayed by 6 clock cycles. when p/s is low, the serial control interface is disabled and the serial input register is loaded asynchronously with parallel digital inputs. the parallel mode is enabled when p/s is set to low. in t he direct parallel mode, the att enuator is controlled by the parallel control inputs directly. the le must be at lo gic high to control the attenuator in this mode. in the latched parallel mode, the parallel control inpu ts will be buffered by registers, and loaded to the outputs when le is high. the outputs shall not change states when le is low. power-up states the power-up (pup) states will work in both serial and parallel modes, and initiate the attenuator according to the pup truth table. during power up, the digita l inputs shall be held constant for at least 1 s after v cc reaches 90% of final value. for serial mode, the pup states will only work when le is held low. the pup state shall be locked out after the first le pulse.
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 8 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. functionality modes of operation: serial, direct parallel, and latched parallel pup truth table inputs gain relative to max. gain notes ps le pup2 pup1 0 0 0 0 -31.5 db 0 0 0 1 -24 db 0 0 1 0 -16 db 0 0 1 1 insertion loss 0 1 x x 0 to ?31.5 db (set vc0.5 - vc16) 1 0 x x 0 to ?31.5 db (set vc0.5 - vc16) serial mode 1 1 x x no definition parallel mode serial interface timi ng characteristics symbol parameter typical performance units -40c 25c +85c t sck min. serial clock period 100 100 100 ns t cs min. control set-up time 20 20 20 ns t ch min. control hold time 20 20 20 ns t ls min. le set-up time 10 10 10 ns t lew min. le pulse width 10 10 10 ns t lh min. serial clock hold time from le 10 10 10 ns t les min. le pulse spacing 630 630 630 ns
75 ? digital attenuator, 6-bit, serial / parallel control 31.5 db, 0.005 - 1.0 ghz rev.v1 maad-008866 9 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? 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. 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. t lh le t lew 30ns minimum t ls parallel control word serial input inte rface timing diagram functionality modes of operation: serial, direct parallel, and latched parallel
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