corporation 157 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com model 150 dc to 18.0 ghz model 151 dc to 4.0 ghz model 152 dc to 26.5 ghz programmable step attenuators for oem & system use description the model 150, 151 and 152 programmable step attenuators represent the widest variety of programmable attenuators available. this attenuator design is the result of an extensive development program and offers long reliable operation with exceptional accuracy and repeatability. these attenuators can provide programmable adjustments of rf signal levels in precise steps of 1 db, 5 db, 10 db, or with custom steps available. each attenuator consists of a cascaded assembly of switched attenuator cells (figure 1). the attenua- tor elements located in the attenuator cell are created by a thin-film process which provides exceptional long-term stability, low power and temperature coefficients. this series of uses a reed switching structure that provides rapid switching together with low inser- tion loss. other features include: ! 3, 4, and 5 cell configurations ! broadband frequency coverage ! high accuracy and repeatability ! long life, 5 million cycles per cell programmability: in each programmable step attenuator, solenoids are used to switch the internal resistor card of each cell into and out of the circuit. the switching is activated by the application of a negative control voltage to the desired pin located in the control connector. once the cell is switched, the solenoid is magnetically latched into position and is able to withstand extreme shock and vibra- tion. internal circuitry is included to interrupt the coil current after switching is complete. this reduces power dissipation even if power is continuously applied. the switching time for each cell is rated at 20 msec maximum which includes the contact settling time. broadband accuracy & low swr: the use of weinschel corporation's proprietary thin-film resistor process provides these programmable step attenuators with a high degree of accuracy and the lowest possible swr uncertainty (refer to specifications for actual values). this thin film process permits the construction of circuits which are truly distributed and without stray reactances, even at the higher microwave frequencies. reliability: each programmable step attenuator is composed of 3 to 5 (4 in most models) cells. as with all mechanical designs, usable life becomes a primary concern to the user. with this in mind weinschel corporation backs all these attenuators with a rated switch life of 5 million operations per cell. standardized testing is also performed on each programmable step attenuator over its operating frequency range by a computer controlled weinschel corporation attenuation measurement system which is traceable to nist standards. environmental: these model 150 programmable step attenuators have undergone an extensive environmental qualification program and have been subjected to temperature, shock, vibration, and humidity conditions per mil-std-202f. these programmable step attenuators operate within these specifications at an ambient temperature of -20 to +75c. operating beyond these limits will adversely affect the accuracy and could damage the internal circuitry. for additional information on the 150 series, visit our website @ www.weinschel.com/programmable.htm figue 1. cell schematic weinschel 2/14/00
weinschel 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com corporation 158 voltage model(s) + 24 v with 150-xx, 151-xx, 152-xx, viking connector 152a-xx + 24 v with 150-xx-1, 151-xx-1, 152-xx-1 ribbon cable 152a-xx-1 + 5 v with 150-xx-2, 151-xx-2, 152-xx-2 viking connector 152a-xx-2 + 5 v with 150-xx-3, 151-xx-3, 152-xx-3 ribbon cable 152a-xx-3 cell 1 cell 2 cell 3 cell 4 cell 5 attn cells attn attn attn attn attn value no. bypass element bypass element bypass element bypass element bypass element 11 db 4 0 db 1 db 0 db 4 db 0 db 2 db 0 db 4 db - - - - - - 15 db 4 0 db 1 db 0 db 8 db 0 db 2 db 0 db 4 db - - - - - - 31 db 5 0 db 1 db 0 db 8 db 0 db 2 db 0 db 16 db 0 db 4 db 55 db 4 0 db 5 db 0 db 10 db 0 db 20 db 0 db 20 db - - - - - - 62 db 5 0 db 2 db 0 db 32 db 0 db 4 db 0 db 16 db 0 db 8 db 70 db 4 0 db 10 db 0 db 20 db 0 db 20 db 0 db 20 db - - - - - - 3 0 db 10 db 0 db 40 db 0 db 20 db - - - - - - - - - - - - 75 db 4 0 db 5 db 0 db 40 db 0 db 20 db 0 db 10 db - - - - - - 90 db 4 0 db 10 db 0 db 30 db 0 db 20 db 0 db 30 db - - - - - - 110 db 4 0 db 10 db 0 db 40 db 0 db 20 db 0 db 40 db - - - - - - conn round 5 6 9 10 7 8 11 12 3 4 pin # ribbon 13 2 3 9 11 5 4 10 8 7 wire round violet yellow orange blue black green brown white - - - - - - color 3/4 cell round black white green orange blue wht/blk red/blk grn/blk orn/blk blu/blk 5 cell ribbon orange yellow blue brown purple black gray white orange yellow table provides standard attenuation ranges, increments, and cell configurations for all weinschel corporation programmable step attenuators (models 150, 151, 152, & 152a) 150 series cell configurations... specifications nominal impedance: 50 ? frequency range: model 151: dc to 4 ghz model 150: dc to 18 ghz model 152: dc to 26.5 ghz operational voltage: + 24v nominal (+20v mini- mum to +30v maximum) or +5v nominal (+4v minimum* to +7v maximum) *minimum operating voltage derated to +4.25 v @ 55c and further derated to +4.5 v @ 75c power rating: 1 watt average, 100 watts peak temperature: -20 to +75c operating -55 to +85c nonoperating temperature coefficient: < 0.0001 db/db/c power sensitivity: < 0.001 db/db/ watt rated switch life: 5 million cycles per cell rf input connectors: rugged female 3.5 mm connectors which mate nondestructively with sma male connectors per mil-std-39012. control connector: 12 pin viking tkp12-101 connector with 5' cable or 14 conductor 16" ribbon cable with connector (shown below): switching speed: 20 msec (includes settling time) control pulse width: 20 msec (minimum) switching current: 125 ma @ +24v per cell 300 ma @ +5v per cell repeatability: + 0.01 typical to 18 ghz + 0.05 db typical to 26.5 ghz vibration: mil-std-202f, method 204d cond b altitude: mil-std-202f, method 105c cond b, 50,000 ft. shock: mil-std -202f, method 213b cond b, except 10g, 6 msec humidity: mil-std-202f, method 103b, cond. b (96 hrs. @ 95%, rh) emc: radiated interference is within the requirements of mil-std-461 method re02, vde 0871 and cispr publication ii. voltage/connector options: ribbon cable models round (viking) cable models 2/14/00
weinschel 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com corporation 159 frequency attenuation setting (db) range (ghz) 5 10 15 20 25 30 35 40 45 50 55 dc-4 0.2 0.3 0.4 0.4 0.4 0.6 0.6 0.7 0.7 0.8 1.0 4-12.4 0.3 0.4 0.5 0.5 0.5 0.7 0.8 0.9 0.9 1.0 1.3 12.4-18 0.4 0.4 0.5 0.5 0.5 0.8 1.0 1.1 1.1 1.2 1.6 18-26.5 0.5 0.5 0.6 0.6 0.6 0.9 1.2 1.4 1.4 1.5 2.0 model 152-55: frequency attenuation setting (db) range (ghz) 2 4 6 8 1012 14161820222426 28 3032 dc-4 0.3 0.3 0.3 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 4-12.4 0.4 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 12.4-18 0.5 0.5 0.5 0.6 0.6 0.6 0.8 0.8 0.8 0.8 0.8 1.0 1.0 1.0 1.2 1.2 model 150/151-62: frequency attenuation setting (db) range (ghz) 343638 404244 46485052 54 56 58 60 62 dc-4 0.6 0.6 0.7 0.7 0.7 0.8 0.8 0.8 0.9 0.9 0.9 1.0 1.0 1.0 1.2 4-12.4 1.0 1.0 1.1 1.1 1.3 1.4 1.4 1.4 1.5 1.6 1.6 1.6 1.8 1.8 1.8 12.4-18 1.4 1.4 1.6 1.6 1.8 1.8 2.0 2.0 2.0 2.2 2.2 2.2 2.4 2.4 2.4 frequency attenuation setting (db) range (ghz) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 dc-4 0.2 0.2 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 4-12.4 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 12.4-18 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 18-26.5 0.5 0.6 0.7 0.8 0.9 0.9 0.9 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1 model 150/151/152-11 & 150/151/152-15: frequency attenuation setting (db) range (ghz) 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 dc-4 0.2 0.2 0.4 0.4 0.5 0.5 0.7 0.7 0.9 0.9 1.1 1.1 1.2 1.2 1.4 4-12.4 0.3 0.3 0.6 0.6 0.9 0.9 1.2 1.2 1.5 1.5 1.8 1.8 2.1 2.1 2.1 12.4-18 0.4 0.4 0.8 0.8 1.2 1.2 1.6 1.6 2.0 2.0 2.4 2.4 2.8 2.8 2.8 model 150/151-75: frequency attenuation setting (db) range (ghz) 102030 405060 708090 dc-4 0.3 0.5 0.6 0.7 0.8 1.0 1.1 1.1 1.2 4-12.4 0.4 0.5 0.7 0.9 1.0 1.3 1.5 1.6 1.7 12.4-18 0.5 0.6 0.8 1.1 1.2 1.4 1.7 1.8 2.1 18-26.5 0.5 0.6 0.9 1.4 1.5 1.8 2.3 2.4 2.8 model 152-70 & 152-90: frequency attenuation setting (db) range (ghz) 10 20 30 40 50 60 70 80 90 100 110 dc-4 0.2 0.3 0.5 0.7 0.9 1.0 1.2 1.4 1.6 1.7 1.9 4-12.4 0.4 0.7 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.0 12.4-18 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.0 18-26.5 0.6 0.7 0.9 1.5 1.6 2.2 2.9 --- --- --- --- model 150/151-70, 150/151-110, 152a-70: frequency attenuation setting (db) range (ghz) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 dc-4 0.2 0.2 0.3 0.3 0.3 0.3 0.4 0.4 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 4-12.4 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.7 0.6 0.7 0.7 0.7 0.7 0.7 0.7 12.4-18 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0. model 150/151-31: frequency attenuation setting (db) rang(ghz) 171819 202122 23242526 27 28 29 30 31 dc-4 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.8 0.8 4-12.4 0.8 0.8 0.9 0.9 0.9 0.9 0.9 0.9 1.1 1.0 1.0 1.0 1.0 1.1 1.1 12.4-18 0.9 0.9 1.0 1.0 1.0 1.0 1.1 1.1 1.2 1.2 1.2 1.2 1.2 1.3 1.3 maximum swr (50 ? ? characteristic impedance): frequency (ghz) applicable models dc-4 4-18 18-26.5 151-11, 151-15, 151-31, 151-62, 1.50 - - - - - - 151-75, 151-110 150-11, 150-15, 150-31, 150-62, 1.50 1.90 - - - 150-75, 150-110 151-70 (3 cell) 1.35 - - - - - - 150-70 (3 cell) 1.35 1.70 - - - 152a-70 (3 cell) 1.40 1.70 1.80 152-11, 152-15, 152-55, 152-70, 1.40 1.60 1.80 152-90 attenuation accuracy (+ db with respect to 0 db reference): maximum insertion loss (db): frequency (ghz) applicable models dc-4 4-18 18-26.5 151-11, 151-15, 151-75, 151-110 0.90 - - - - - - 150-11, 150-15, 150-75, 150-110 0.90 2.20 - - - 151-31, 151-62 (5 cell) 1.10 - - - - - - 150-31, 150-62 (5 cell) 1.10 2.60* - - - 151-70 (3 cell) 0.70 - - - - - - 150-70 (3 cell) 0.70 1.60 - - - 152a-70 (3 cell) 0.90 2.00 2.98 152-11, 152-15, 152-55, 152-70, 0.90 2.00 2.98 152-90 *4-12.4 is 1.80, 12.4-18 is 2.60 2/14/00
weinschel 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com corporation 160 physical dimensions: models 150, 151, & 152: note: all dimensions are given in mm (inches) and are maximum, unless otherwise specified. dim a b c 3 cell 82.6 (3.25) 76.2 (3.0) 104.6 (4.12) 4 cell 110.7 (4.36) 103.6 (4.06) 133.6 (5.25) 5 cell 136.9 (5.39) 129.8 (5.11) 159.5 (6.28) 2/14/00
weinschel 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com corporation 161 frequency range/ no. attenuator range/step size voltage/connector cells 11/1 db 15/1 db 55/5 db 31/1 db 62/2 db 70/10 db 75/5 db 90/10 db 110/10 db dc-4 ghz/+24 v/ 4 151-11 151-15 n/a 151-75 n/a 151-110 viking connector 3 151-70 5 151-31 151-62 dc-18 ghz/+24 v/ 4 150-11 150-15 n/a 150-75 n/a 150-110 viking connector 3 150-70 5 150-31 150-62 dc-26.5 ghz/+24 v/ 4 152-11 152-15 152-55 na 152-70 n/a 152-90 n/a viking connector 3 152a-70-2 dc-4 ghz/+24 v/ 4 151-11-1 151-15-1 n/a 151-75-1 n/a 151-110-1 ribbon cable 3 151-70-1 5 151-31-1 151-62-1 dc-18 ghz/+24 v/ 4 150-11-1 150-15-1 n/a 150-75-1 n/a 150-110-1 ribbon cable 3 150-70-1 5 150-31-1 150-62-1 dc-26.5 ghz/+24 v/ 4 152-11-1 152-15-1 152-55-1 n/a n/a 152-70-1 n/a 152-90-1 n/a ribbon cable 3 152a-70-1 dc-4 ghz/+5 v/ 4 151-11-2 151-15-2 n/a 151-75-2 n/a 151-110-2 viking connector 3 151-70-2 5 151-31-2 n/a dc-18 ghz/+5 v/ 4 150-11-2 150-15-2 n/a 150-75-2 n/a 150-110-2 viking connector 3 150-70-2 5 n/a n/a dc-26.5 ghz/+5 v/ 4 152-11-2 152-15-2 152-55-2 n/a n/a 152-70-2 n/a 152-90-2 n/a viking connector 3 152a-70-2 dc-4 ghz/+5 v/ 4 151-11-3 151-15-3 n/a n/a 151-75-3 n/a 151-110-3 ribbon cable 3 151-70-3 5n/a dc-18 ghz/+5 v/ 4 150-11-3 150-15-3 n/a 150-75-1 n/a 150-110-3 ribbon cable 3 150-70-3 5 n/a n/a dc-26.5 ghz/+5 v/ 4 152-11-3 152-15-3 152-55-3 n/a n/a 152-70-3 n/a 152-90-3 n/a ribbon cable 3 152a-70-3 150 series ordering guide... optional calibration data: calibration data is available at an additional cost for all programmable step attenuator models. this calibration data is generated using a computer controlled weinschel attenuation measurement system. standard calibration data can be provided in 250 mhz steps for all dc-4 ghz models and in 500 mhz steps for dc-18 and dc-26.5 ghz models. the measurements are traceable to nist standards. models with built-in ttl/cmos interface\ driver circuit: weinschel corporation now offers new versions of the 150 series with built-in ttl/cmos interfaces. this new generation of intelligent attenuators will greatly sim- plify as well as provide an economical solution to 150 series driver problems. refer to model 150t, 151t, and 152t data sheet for more information. accessories 2/14/00
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