digital attenuator, 4 - bit, single control 30 db, 0.5 - 2.0 ghz rev. v7 at - 264 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 ? positive single control ? 2 - db attenuation steps to 30 db ? low dc power consumption ? tssop - 16 plastic package description macoms at - 264 is a 4 - bit, 2 - db step gaas mmic digital attenuator in a low cost tssop - 16 surface mount plastic package. the at - 264 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. typical applications include radio, cellular, wireless lans, gps equipment and other gain/level control circuits. the at - 264 is fabricated using a mature 1 micron gaas mesfet process. the process features full chip passivation for increased performance and reliability. functional schematic 2,3 2. blocking caps are required on all rf ports (39 pf used for data measurements). 3. vs = +5 0.2 vdc must be applied at rf1 or rf2 using a 10 k or greater pull - up resistor. pin configuration pin no. function pin no. function 1 ground 9 rf2 2 ground 10 ground 3 vc1 11 ground 4 vc2 12 ground 5 vc3 13 ground 6 vc4 14 ground 7 ground 15 ground 8 ground 16 rf1 ordering information 1 part number package at - 264 - pin bulk packaging at - 264tr 1000 piece reel 1. reference application note m513 for reel size information. 1 1 2 1 1 1 0 9 1 4 1 3 1 2 3 4 5 6 7 8 1 6 1 5 1 6 8 4 2 v s
digital attenuator, 4 - bit, single control 30 db, 0.5 - 2.0 ghz rev. v7 at - 264 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 electrical specifications 4 : t a = 25c, z 0 = 50 , v s = 5 v 4. external dc blocking capacitors are required on all rf ports. loss varies at 0.003 db/c. truth table 7 vc1 vc2 vc3 vc4 attenuation (db) 1 1 1 1 reference insertion loss 1 1 1 0 2 1 1 0 1 4 1 0 1 1 8 0 1 1 1 16 0 0 0 0 30 absolute maximum ratings 5,6 parameter absolute maximum input power 50 mhz 500 - 2000 mhz +27 dbm +34 dbm control voltage - 0.5 v < v c < 8.5 v operating temperature - 40c to +85c storage temperature - 65c to +150c parameter test conditions units min. typ. max. reference insertion loss 0.5 - 1.0 ghz 0.5 - 2.0 ghz db db 2.0 2.2 2.4 2.6 attenuation accuracy 0.5 - 1.0 ghz 0.5 - 2.0 ghz (0.15 db + 5% of attenuation setting in db) db (0.3 db + 5% of attenuation setting in db) db vswr 1.0 - 1.5 ghz 0.5 - 2.0 ghz ratio ratio 1.5:1 1.9:1 trise, tfall 10% to 90% rf, 90% to 10% rf ns 200 ton, toff 50% control to 90% rf,50% control to 10% rf ns 200 transients in band mv 75 1 db compression input power, 0.5 ghz input power, 0.9 ghz dbm dbm 25 25 ip 2 0.5 ghz 0.5 - 2.0 ghz measured relative to input (for two - tone input power up to +5 dbm) dbm dbm 65 71 ip 3 0.5 ghz 0.5 - 2.0 ghz measured relative to input (for two - tone input power up to +5 dbm) dbm dbm 43 47 i c ? vc ? ? 5 v a 10 i vs a 20 5. exceeding any one or combination of these limits may cause permanent damage to this device. 6. macom does not recommend sustained operation near these survivability limits. 7. 0 = 0 0.2 v, 1 = +5 v
digital attenuator, 4 - bit, single control 30 db, 0.5 - 2.0 ghz rev. v7 at - 264 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 vswr insertion loss attenuation attenuation accuracy -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 0.5 1.0 1.5 2.0 2.5 3.0 2 db 4 db 8 db 16 db 30 db frequency (ghz) 0 5 10 15 20 25 30 35 0.5 1.0 1.5 2.0 2.5 3.0 2 db 4 db 8 db 16 db 30 db frequency (ghz) 1.5 2.0 2.5 3.0 3.5 0.5 1.0 1.5 2.0 2.5 3.0 -40c +25c +85c frequency (ghz) 1.0 1.2 1.4 1.6 1.8 2.0 0.5 1.0 1.5 2.0 2.5 3.0 il 2 db 4 db 8 db 16 db 30 db frequency (ghz)
digital attenuator, 4 - bit, single control 30 db, 0.5 - 2.0 ghz rev. v7 at - 264 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 tssop - 16 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.
digital attenuator, 4 - bit, single control 30 db, 0.5 - 2.0 ghz rev. v7 at - 264 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 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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