attenuators - smt 6 6 - 8 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc230ms8 / 230MS8E 4 db lsb gaas mmic 3-bit digital attenuator, 0.75 - 2.0 ghz v02.0505 general description features functional diagram 4 db lsb steps to 28 db single positive control per bit +/- 0.5 db typical bit error pin - for - pin replacement to aa100-59 digital attenuator electrical specifications, t a = +25 c, vdd = +3v to +5v & vctl = 0/vdd (unless otherwise stated) typical applications the hmc230ms8 & hmc230MS8E are broadband 3 - bit positive control gaas ic digital attenuators in 8 lead msop surface mount plastic packages. cover- ing 0.75 to 2 ghz, the insertion loss is typically less than 2 db. the attenuator bit values are 4 (lsb), 8, and 16 db for a total attenuation of 28 db. accuracy is excellent at 0.5 db typical with an iip3 of up to +48 dbm. three bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state at less than 50 ua each. a single vdd bias of +3 to +5 volts applied through an external 5k ohm resistor is required. the hmc230ms8 / hmc230MS8E is ideal for: ? cellular ? pcs, ism, mmds ? wll handset ? base station infrastructure parameter frequency min. typical max. units insertion loss 0.75 - 1.7 ghz 1.7 - 2.0 ghz 1.6 1.8 1.8 2.1 db db attenuation range 0.75 - 2.0 ghz 28 db return loss (rf1 & rf2, all atten. states) 0.75 - 1.7 ghz 1.7 - 2.0 ghz 10 13 13 16 db db attenuation accuracy: (reference to insertion loss) 4, 8, 12, 16, 20 db states 24, 28 db states all attenuation states 0.75 - 1.4 ghz 0.75 - 1.4 ghz 1.40 - 2.0 ghz 0.3 + 3% of atten. setting max 0.4 + 6% of atten. setting max 0.3 + 3% of atten. setting max db db db input power for 0.1 db compression 5v 3v 0.75 - 2.0 ghz 20 19 dbm dbm input third order intercept (two-tone input power = 0 dbm each) 5v 3v 0.75 - 2.0 ghz 46 45 dbm dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) 0.75 - 2.0 ghz 560 600 ns ns
attenuators - smt 6 6 - 9 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc230ms8 / 230MS8E v02.0505 bit error vs. attenuation state normalized attenuation (only major states are shown) insertion loss return loss rf1, rf2 (only major states are shown) 4 db lsb gaas ic 3-bit digital attenuator, 0.75 - 2.0 ghz note: all data typical over voltage (+3v to +5v) & temperature (-40 to +85 deg c). bit error vs. frequency (only major states are shown) relative phase vs. frequency (only major states are shown) -3 -2.5 -2 -1.5 -1 -0.5 0 0.75 1 1.25 1.5 1.75 2 +25c -40c +85c insertion loss (db) frequency (ghz) -2 -1 0 1 2 3 4 8 12 16 20 24 28 0.9 ghz 1.9 ghz bit error (db) attenuation state (db) -35 -30 -25 -20 -15 -10 -5 0 0.75 1 1.25 1.5 1.75 2 4 db 8 db 16 db 28 db normalized insertion loss (db) frequency (ghz) -60 -40 -20 0 20 40 60 0.75 1 1.25 1.5 1.75 2 4 db 8 db 16 db 28 db relative phase (deg.) frequency (ghz) -4 -3 -2 -1 0 1 2 3 4 0.75 1 1.25 1.5 1.75 2 4 db 8 db 16 db 28 db bit error (db) frequency (ghz) -25 -20 -15 -10 -5 0 0.75 1 1.25 1.5 1.75 2 return loss (db) frequency (ghz) 16, 28 db 8 db 4 db
attenuators - smt 6 6 - 10 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com control & bias voltages application circuit dc blocking capacitors c1 & c2 are required on rf1 & rf2. choose c1 = c2 = 100 ~ 300 pf to allow lowest customer specific frequency to pass with minimal loss. r1 = 5k ohm is required to supply voltage to the circuit through either pin 1 or pin 5. truth table control voltage input attenuation setting rf1 - rf2 v1 16 db v2 4 db v3 8 db high high high reference i.l. high low high 4 db high high low 8 db low high high 16 db low low low 28 db max. atten. any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. state bias condition low 0 to +0.2vdc @ 20 ua max high vdd 0.2v @ 50 ua typ note: vdd = +3v to +5v 0.2v hmc230ms8 / 230MS8E v02.0505 4 db lsb gaas ic 3-bit digital attenuator, 0.75 - 2.0 ghz
attenuators - smt 6 6 - 11 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com outline drawing absolute maximum ratings control voltage (v1, v2, v3) vdd to +0.5 vdc bias voltage (vdd) +8.0 vdc storage temperature -65 to +150 c operating temperature -40 to +85 c rf input power (0.75 - 2 ghz) +26 dbm electrostatic sensitive device observe handling precautions part number package body material lead finish msl rating package marking [3] hmc230ms8 low stress injection molded plastic sn/pb solder msl1 [1] h230 xxxx hmc230MS8E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h230 xxxx [1] max peak re ow temperature of 235 c [2] max peak re ow temperature of 260 c [3] 4-digit lot number xxxx package information hmc230ms8 / 230MS8E v02.0505 4 db lsb gaas ic 3-bit digital attenuator, 0.75 - 2.0 ghz notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters]. 3. dimension does not include moldflash of 0.15mm per side. 4. dimension does not include moldflash of 0.25mm per side. 5. all ground leads must be soldered to pcb rf ground.
attenuators - smt 6 6 - 12 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com evaluation circuit board the circuit board used in the nal application should use rf circuit design te chniques. signal lines should have 50 ohm impedance while the pack- age ground leads should be connected directly to the ground plane similar to that shown. a suf cient number of via holes should be used to connect the top and bottom ground planes. the evaluation cir- cuit board as shown is available from hittite micro- wave corporation upon request. list of materials for evaluation pcb 103155 [1] *r2 = r3 = r4 = 100 ohm. these resistors are optional and may be used to enhance decoupling of the rf path from the control inputs. item description j1 - j2 pcb mount sma connector j3 - j6 dc pin r1 5k ohm resistor, 0402 chip r2, r3, r4 100 ohm resistor, 0402 chip c1, c2 0402 chip capacitor, select for lowest frequency of operation u1 hmc230ms8 / hmc230MS8E digital attenuator pcb [2] 103153 evaluation pcb 1.25 x 1.5 [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc230ms8 / 230MS8E v02.0505 4 db lsb gaas ic 3-bit digital attenuator, 0.75 - 2.0 ghz
attenuators - smt 6 6 - 13 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com notes: hmc230ms8 / 230MS8E v02.0505 4 db lsb gaas ic 3-bit digital attenuator, 0.75 - 2.0 ghz
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