digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 1 1 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 1 features ? integrated cmos/ttl compatible driver ? parallel & serial (p/s) control with power - up state selection ? insertion loss: 1.6 db typical @ 2.1 ghz ? ip3: 50 dbm typical @ 2 ghz ? attenuation accuracy: +/ - (0.4 + 4% of attenuation setting) db ? 0.5 - db attenuation steps to 31.5 db ? useable from 0.4 to 8.0 ghz ? lead - free 4 mm 24 - lead pqfn package ? halogen - free Dgreen mold compound ? rohs* compliant and 260c re - flow compatible ? small relative phase variation per bit description the maad - 000523 is a 6 - bit, 0.5 - db step gaas mmic digital attenuator in a lead - free 4 mm 24 lead pqfn surface mount plastic package. this device is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. typical applications include cellular basestation r x /t x line - up, femtocells, and other gain / level control circuits. this attenuator is controlled with either a spi compatible serial interface or a 6 bit parallel word. functional schematic 3,4 3. blocking capacitors are required on all rf ports. 4. for optimum rf performance all n/cs should be terminated to gnd. ordering information 1 part number package maad - 000523 - tr1000 1000 piece reel maad - 000523 - tr3000 3000 piece reel maad - 000523 - 001smb sample board * restrictions on hazardous substances, european union directive 2002/95/ec. 1. reference application note m513 for reel size information. 2. all sample boards include 5 loose parts. pin configuration pin no. function pin no. function 1 p/s 13 rf_out 2 clk 14 no connection 3 serial in 15 serial out 4 le 16 pup2 5 ground 17 pup1 6 rf_in 18 v dd 7 no connection 19 vc16 8 no connection 20 vc8 9 no connection 21 vc4 10 no connection 22 vc2 11 no connection 23 vc1 12 no connection 24 vc0.5 1 2 4 1 2 1 8 6 p / s c l k l e g n d r f _ i n s e r _ i n v d d p u p 1 s e r _ o u t n / c r f _ o u t p u p 2 n / c n / c n / c n / c n / c n / c v c 0 . 5 v c 4 v c 1 v c 8 v c 2 v c 1 6 7 1 3 1 9
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 2 2 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 2 parameter test conditions units min. typ. max. reference insertion loss 0.7 ghz 2.1 ghz 4.0 ghz 6.0 ghz db 1.3 1.6 2.0 2.5 2.3 attenuation accuracy 0.7 - 6.0 ghz (0.4 + 4% of attenuation setting) db typ. vswr 0.7 - 6.0 ghz ratio 1.2:1 trise, tfall 10% to 90% rf, 90% to 10% rf ns 70 ton, toff 50% control to 90% rf, 50% control to 10% rf ns 100 settling time loss delta (gate lag) rf loss difference within 30 s to 500 s @ 2 ghz and 500 s pulse db 0.2 transients in band mv 50 input p1db 2.0 ghz dbm 25 ip 2 2 - tone, +10 dbm/tone, 1 mhz spacing 2.0 - 6.0 ghz dbm 75 ip 3 2 - tone, +10 dbm/tone, 1 mhz spacing 2.0 - 6.0 ghz dbm 50 i dd v dd = 5v a 0 600 5. external dc blocking capacitors are required on all rf ports. loss varies at 0.003 db/c. truth table 6 vc16 vc4 vc2 vc1 attenuation (db) vc8 vc0.5 1 1 1 1 reference il 1 1 1 1 1 1 1 0 0.5 1 1 1 1 0 1 1 1 1 0 1 2 1 1 1 0 1 1 4 1 1 1 1 1 1 8 0 1 0 1 1 1 16 1 1 0 0 0 0 31.5 0 0 6. 0 = 0 to 0.8v, 1 = 2 to 5v. absolute maximum ratings 7,8 parameter absolute maximum input power 700 - 6000 mhz +27 dbm operating voltage 6 v control voltage - 0.5 v < v c < 5.5 v operating temperature - 40c to +85c junction temperature +150c storage temperature - 65c to +150c 7. exceeding any one or combination of these limits may cause permanent damage to this device. 8. m/a - com technology solutions does not recommend sustained operation near these survivability limits. electrical specifications 5 : t a = 25c, z 0 = 50 , v dd = 5 v, v c = 0/+5 v 6
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 3 3 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 3 typical performance curves relative attenuation across all major states insertion loss input return loss, across all attenuation states output return loss, across all attenuation states step error vs. state over frequency ip3 -35 -30 -25 -20 -15 -10 -5 0 0 1 2 3 4 5 6 7 8 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -5 -4 -3 -2 -1 0 0 1 2 3 4 5 6 7 8 +25c -40c +85c frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0 1 2 3 4 5 6 7 8 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0 1 2 3 4 5 6 7 8 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db frequency (ghz) -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 0 4 8 12 16 20 24 28 32 0.7 ghz 1 ghz 2 ghz 3 ghz 4 ghz 5 ghz 6 ghz state (db) - - - - +/- (0.3 + 3%att) db - - - - +/- (0.3 + 4%att) db 30 40 50 60 70 80 0 1 2 3 4 5 6 7 8 frequency (ghz)
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 4 4 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 4 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. lead free 4 mm 24 - lead pqfn ? ? reference application note s2083 for lead - free solder reflow recommendations. meets jedec moisture sensitivity level 1 requirements. plating is 100% matte tin over copper. typical performance curve: relative phase variation vs. frequency and all states -50 -40 -30 -20 -10 0 10 20 30 40 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 frequency (ghz)
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 5 5 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 5 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 the 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. serout 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. for all modes of operations, the outputs will stay constant while le is kept low. the parallel mode is enabled when p/s is set to low. in the direct parallel mode, the attenuator is controlled by the parallel control inputs directly. the le must be at logic high to control the attenuator in this mode. in the latched parallel mode, the parallel control inputs 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 digital 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.
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 6 6 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 6 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 parallel mode 0 0 0 1 - 24 db 0 0 1 0 - 16 db 0 0 1 1 insertion loss 0 1 x x 0 to C 31.5 db (set vc0.5 - vc16) 1 0 x x 0 to C 31.5 db (set vc0.5 - vc16) serial mode 1 1 x x no definition serial interface timing 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
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 7 7 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 7 parallel control word serial input interface timing diagram functionality modes of operation: serial, direct parallel, and latched parallel t l h l e t l e w 3 0 n s m i n i m u m t l s d 5 m s b t c s d 4 t c h d 1 d 0 l s b t l s t l e w t l h t l e s s e r i a l c l k l e c o n t r o l w o r d
digital attenuator, 6 - bit, serial / parallel control 31.5 db, 0.7 - 6.0 ghz rev. v2 maad - 000523 8 8 m/a - com technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. visit www.macom.com for additional data sheets and product information. for further information and support please visit: https://www.macom.com/support 8 m/a - com technology solutions inc. all rights reserved. information in this document is provided in connection with m/a - com technology solutions inc ("macom") products. these materials are provided by macom as a service to its customers and may be used for informational purposes only. except as provided in macom's terms and conditions of sale for such products or in any separate agreement related to this document, macom assumes no liability whatsoever. macom assumes no responsibility for errors or omissions in these materials. macom may make changes to specifications and product descriptions at any time, without notice. macom makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. no license, express or implied, by estoppels or otherwise, to any intellectual property rights is granted by this document. these materials are provided "as is" without warranty of any kind, either express or implied, relating to sale and/or use of macom products including liability or warranties relating to fitness for a particular purpose, consequential or incidental damages, merchantability, or infringement of any patent, copyright or other intellectual property right. macom further does not warrant the accuracy or completeness of the information, text, graphics or other items contained within these materials. macom shall not be liable for any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of these materials. macom products are not intended for use in medical, lifesaving or life sustaining applications. macom customers using or selling macom products for use in such applications do so at their own risk and agree to fully indemnify macom for any damages resulting from such improper use or sale.
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