internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified rev. 1 m00000 ZX76-31R5-PN 050727 page 1 of 10 product features ? low insertion loss ? high ip3, +52 dbm typ ? excellent return loss, 20 db typ ? excellent accuracy, 0.1 db typ ? fast switching control frequency, 1 mhz typ. ? dual supply voltage: v dd =+3v, v ss =-3v ? control inputs buffered by schmitt triggers ? rigid unibody case ? protected by us patent 6,790,049 typical applications ? lab ? instrumentation ? test equipment general description the ZX76-31R5-PN is a 50 ? rf digital step attenuator that offers an attenuation range up to 31.5 db in 0.5 db steps. the control is a 6-bit parallel interface. the model operates on a dual supply voltage: v dd =+3v, v ss =-3v. see application note an-70-004 for 5v supply voltage. the ZX76-31R5-PN is pro - duced using a unique case package for ruggedness and operation in tough environments. digital step attenuator 31.5 db, 0.5 db step, 6 bit, parallel control interface dual supply voltage 50 ? dc-2400 mhz simpli?ed schematic rf input 16db 8db 4db 2db 1db parallel control internal control logic interface latch enable 0.5db rf out rev. or m101068 ZX76-31R5-PN edr-7464/2 051228 page 1 of 10 connectors order p/n price qty. sma ZX76-31R5-PN-s $79.95 ea. (1-9) ZX76-31R5-PN case style: hk1149
page 2 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified rf electrical speci?cations, dc-2400 mhz, t amb =25c, v dd =+3v, v ss =-3v absolute maximum ratings parameter ratings operating temperature -40c to 85c storage temperature -55c to 100c v dd , supply voltage -0.3v min., 4v max. v ss , supply voltage -4v min., 0.3v max. voltage on control input -0.3v min., 5v max. esd, hbm 500v esd, mm 100v input power +24dbm parameter min. typ. max. units v dd , supply voltage 2.7 3 3.3 v v ss , supply voltage -3.3 -3 -2.7 v i dd , supply current 3 ma i ss , supply current 100 a control input voltage low 0 0.3xv dd v control input voltage high 0.7xv dd v dd v control current 400 a dc electrical speci?cations parameter min. typ. max. units switching speed, 50% control to 0.5db of attenuation value 1.0 sec switching control frequency 1.0 mhz switching speci?cations parameter freq. range (ghz) min. typ. max. units accuracy @ 0.5 db attenuation setting dc-1 0.03 0.1 db 1-2.4 0.05 0.15 db accuracy @ 1 db attenuation setting dc-1 0.02 0.1 db 1-2.4 0.05 0.15 db accuracy @ 2 db attenuation setting dc-1 0.05 0.15 db 1-2.4 0.15 0.25 db accuracy @ 4 db attenuation setting dc-1 0.07 0.2 db 1-2.4 0.15 0.25 db accuracy @ 8 db attenuation setting dc-1 0.03 0.2 db 1-2.4 0.15 0.3 db accuracy @ 16 db attenuation setting dc-1 0.1 0.3 db 1-2.4 0.15 0.5 db insertion loss @ all attenuator set to 0db dc-1 1.5 2.2 db 1-2.4 2.0 3.0 db ip3 input* (at min. and max. attenuation) dc-2.4 +52 dbm input power @ 0.2db compression* (at min. and max. attenuation) dc-2.4 +24 dbm vswr dc-1 1.2 1.5 1-2.4 1.2 1.5 * ip3 and 1db compression degrade below 1 mhz
page 3 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified pin description pin con?guration function pin number description le j1-1 latch enable input c1 j1-2 control for attenuation bit, 1 db c0.5 j1-3 control for attenuation bit, 0.5 db n/c j1-4 not connected c16 j1-5 control for attenuation bit, 16 db gnd j1-6 ground connection gnd j1-7 ground connection c4 j1-8 control for attenuation bit, 4 db c8 j1-9 control for attenuation bit, 8 db c2 j1-10 control for attenuation bit, 2 db rf in j2 rf in port (note 1) rf out j3 rf out port (note 1) gnd p1 ground connection v dd p2 positive supply voltage gnd p3 ground connection v ss p4 negative supply voltage note 1: both rf ports must be held at 0vdc or dc blocked with an external series capacitor. j2 j3 p2 p1 gnd +vdd rf out rf in j2 j3 side view top view j1-10 j1-1 j1 j1 p3 p4 gnd -vss j3 j2 p2 p1 gnd +vdd rf out rf in j3 j2 side view top view j1-10 j1-1 j1 j1 cable pin description j1-pin number j4-pin number function description wire color j1-1 j4-8 le latch enable input white j1-2 j4-3 c1 control for attenuation bit, 1 db yellow j1-3 j4-2 c0.5 control for attenuation bit, 0.5 db green j1-5 j4-7 c16 control for attenuation bit, 16 db blue j1-6 j4-20 gnd ground connection black j1-8 j4-5 c4 control for attenuation bit, 4 db orange j1-9 j4-6 c8 control for attenuation bit, 8 db brown j1-10 j4-4 c2 control for attenuation bit, 2 db red w1p1 1 2 3 5 6 9 7 8 10 w1p2* 18 2 19 4 3 20 4 n/c * 25 pin d-type connector, other pins are n/c. n/c n/c n/c j1 j4 note: other pins not connected. cable shield connected to case ground.
page 4 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified typical performance curves insertion loss (ref) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) insertion loss (db) -40oc +25oc +85oc attenuation (0.5 db) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40oc +25oc +85oc attenuation (1 db) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c attenuation (2 db) 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c attenuation (4 db) 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c attenuation (8 db) 7.0 7.2 7.4 7.6 7.8 8.0 8.2 8.4 8.6 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c
page 5 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified typical performance curves attenuation (16 db) 14.0 14.5 15.0 15.5 16.0 16.5 17.0 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c attenuation (31.5 db) 20 22 24 26 28 30 32 34 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -40c +25c +85c return loss in (ref) 0 5 10 15 20 25 30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) return loss (db) -40c +25c +85c return loss out (ref) 0 5 10 15 20 25 30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) return loss (db) -40c +25c +85c return loss in (major atten. steps) @ +25 o c 10 20 30 40 50 60 70 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) return loss (db) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db return loss out (major atten. steps) @ +25 o c 10 20 30 40 50 60 70 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) return loss (db) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db
page 6 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified typical performance curves ip3 (major atten. steps) @ -40 o c 35 40 45 50 55 60 65 70 75 80 0 400 800 1200 1600 2000 2400 frequency (mhz) ip3 (dbm) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db ip3 (major atten. steps) @ +25 o c 35 40 45 50 55 60 65 70 75 80 0 400 800 1200 1600 2000 2400 frequency (mhz) ip3 (dbm) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db ip3 (major atten. steps) @ +85 o c 35 40 45 50 55 60 65 70 75 80 0 400 800 1200 1600 2000 2400 frequency (mhz) ip3 (dbm) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db compression @ input power=+24dbm (major atten. steps) @ -40 o c -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0 400 800 1200 1600 2000 2400 frequency (mhz) compression (db) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db compression @ input power=+24dbm (major atten. steps) @ +25 o c -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0 400 800 1200 1600 2000 2400 frequency (mhz) compression (db) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db compression @ input power=+24dbm (major atten. steps) @ +85 o c -0.80 -0.70 -0.60 -0.50 -0.40 -0.30 -0.20 -0.10 0.00 0.10 0.20 0 400 800 1200 1600 2000 2400 frequency (mhz) compression (db) 0 db 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db
page 7 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified outline drawing outline dimensions ( ) inch mm a b c d e f g h j k l m n p q r s wt. grams 1.20 .75 .46 1.18 .04 .17 .45 .59 .33 .21 .22 .18 1.00 .50 .35 .18 .09 35.0 30.5 19.1 11.6 30.0 1.0 4.3 11.4 14.9 8.3 5.3 5.6 4.6 25.4 12.7 8.9 4.6 2.3 recommended mounting hardware: use unc#2 pan head screws with internal tooth lock washers for unit mounting.
page 8 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified the parallel interface timing requirements are de?ned by figure 1 (parallel interface timing diagram) and table 2 (parallel interface ac characteristics), and switching speed. for latched parallel programming the latch enable (le) should be held low while changing attenuation state control values, then pulse le high to low (per figure 1) to latch new attenuation state into device. for direct parallel programming, the latch enable (le) line should be pulled high. changing attenuation state control values will change device state to new attenuation. direct mode is ideal for manual control of the device (using hardwire, switches, or jumpers). simpli?ed schematic figure 1: parallel interface timing diagram the ZX76-31R5-PN parallel interface consists of 6 control bits that select the desired attenuation state, as shown in table 1: truth table table 1. truth table attenuation state c16 c8 c4 c2 c1 c0.5 reference 0 0 0 0 0 0 0.5 (db) 0 0 0 0 0 1 1 (db) 0 0 0 0 1 0 2 (db) 0 0 0 1 0 0 4 (db) 0 0 1 0 0 0 8 (db) 0 1 0 0 0 0 16 (db) 1 0 0 0 0 0 31.5 (db) 1 1 1 1 1 1 note: not all 64 possible combinations of c0.5 - c16 are shown in table table 2. parallel interface ac characteristics symbol parameter min. units t lepw le minimum pulse width 10 ns t pdsup data set-up time before clock rising edge of le 10 ns t pdhld data hold time after clock falling edge of le 10 ns t p d s u p t p d h l d p a r a l l e l d a t a c 1 6 : c 0 . 5 l e t l e p w rf input 16db 8db 4db 2db 1db parallel control internal control logic interface latch enable 0.5db rf out power-up state when the attenuator powers up and le is logic low, the nominal attenuation is set on 0 db. when le is logic high, the nominal attenuation selected upon control logics ( see table 1 ). control cables for programming and cd with software can be ordered separately. for details see page 9.
page 9 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified recommended accessories two optional cable accessories with and without interface connector are available with ZX76-31R5-PN, the zx76-cp and zx76-wp. zx76-cp shielded cable with interface 25 pin d-type connector j4 and supplied software are used to control the ZX76-31R5-PN digital attenuator from a computer, using lpt port. zx76-wp shielded cable without interface 25 pin d-type connector enables customer to use the ZX76-31R5-PN digital attenuator in his own application. cable length is 4.9 feet / 1.5 meters. note: mini-circuits can supply control cables with other options for the j4 connector and/or different cable lengths. consult factory with your speci?c requirements. zx76-cp control cable j1-pin number j4-pin number function description wire color j1-1 j4-8 le latch enable input white j1-2 j4-3 c1 control for attenuation bit, 1 db yellow j1-3 j4-2 c0.5 control for attenuation bit, 0.5 db green j1-5 j4-7 c16 control for attenuation bit, 16 db blue j1-6 j4-20 gnd ground connection black j1-8 j4-5 c4 control for attenuation bit, 4 db orange j1-9 j4-6 c8 control for attenuation bit, 8 db brown j1-10 j4-4 c2 control for attenuation bit, 2 db red zx76-cp wiring information w1p1 1 2 3 5 6 9 7 8 10 w1p2* 18 2 19 4 3 20 4 n/c * 25 pin d-type connector, other pins are n/c. n/c n/c n/c j1 j4 note: other pins not connected. cable shield connected to case ground.
page 10 of 10 ZX76-31R5-PN digital step attenuator internet http://www.minicircuits.com p.o. box 350166, brooklyn, new york 11235-0003 (718) 934-4500 fax (718) 332-4661 distribution center s north america 800-654-7949 ? 417-335-5935 ? fax 417-335-5945 ? e urope 44-1252-832600 ? fax 44-1252-837010 mini-cir cuits ? mini-circuits iso 9001 & iso 14001 certified pin number function description wire color j1-1 le latch enable input white j1-2 c1 control for attenuation bit, 1 db yellow j1-3 c0.5 control for attenuation bit, 0.5 db green j1-5 c16 control for attenuation bit, 16 db blue j1-6 gnd ground connection black j1-8 c4 control for attenuation bit, 4 db orange j1-9 c8 control for attenuation bit, 8 db brown j1-10 c2 control for attenuation bit, 2 db red zx76-wp wiring information ordering information zx76-wp control cable *note: to receive the cd, request when placing order. model number description quantity min. no. of units price $ ea. ZX76-31R5-PN digital attenuator - parallel interface dual voltage (negative and positive) 1-9 79.95 zx76-cp cable accessory with interface connector 1 19.95 zx76-wp cable accessory without interface connector 1 15.95 zx76-cd* cd rom zx76 programming software 1 no charge w1p1 1 2 3 5 6 9 7 8 10 w1p2* 18 2 19 4 3 20 4 n/c * 25 pin d-type connector, other pins are n/c. n/c n/c n/c j1 note: other pins not connected. cable shield connected to case ground.
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