for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 1 the HMC724LC3C is a 1:2 fanout buffer designed to support data transmission rates up to 14 gbps, and clock frequencies as high as 14 ghz. all differential inputs and outputs are dc coupled and terminated on chip with 50 ohm resistors to ground. the outputs may be used in either single ended or differential modes, and should be ac or dc coupled into 50 ohm resistors connected to ground. all differential inputs to the HMC724LC3C are cml and terminated on-chip with 50 ohms to the positive supply, gnd, and may be dc or ac coupled. the differential cml outputs are source terminated to to 50 ohms and may also be ac or dc coupled. outputs can be connected directly to a 50 ohm ground-terminated system or drive devices with cml logic input. the HMC724LC3C operates from a single -3.3 v supply and is available in rohs-compliant 3x3 mm smt package. general description HMC724LC3C features functional diagram inputs terminated internally to 50 ohms differential inputs are dc coupled propagation delay: 110 ps fast rise and fall times: 19 / 18 ps power dissipation: 300 mw 16 lead ceramic 3x3 mm smt package: 9 mm 2 typical applications the HMC724LC3C is ideal for: ? 16 g fiber channel ? rf ate applications ? broadband test & measurement ? serial data transmission up to 14 gbps ? clock buffering up to 14 ghz electrical specifcations, t a = +25 oc, vee = -3.3 v 14 gbps fast rise time 1:2 fanout buffer v03.1010 parameter conditions min. typ. max units power supply voltage -3.6 -3.3 -3.0 v power supply current 90 ma maximum data rate 14 gbps maximum clock rate 14 ghz input voltage range -1.5 0.5 v input differential range 0.1 2.0 vp-p input return loss frequency <14 ghz 10 db output amplitude single-ended, peak-to-peak 550 mvp-p differential, peak-to-peak 1100 mvp-p output high voltage -10 mv output low voltage -560 mv output rise / fall time single-ended, 20% - 80% 19 / 18 ps
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 2 electrical specifcations (continued) HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer [1] data rate = 13 gbps [2] frequency = 10 ghz [3] vee = 3.3 v dc current vs. supply voltage [1] output differential voltage vs. frequency [3] rise / fall time vs. supply [1] 70 75 80 85 90 95 100 105 110 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9 +25c +85c -40c dc current (ma) supply voltage (v) 15 17 19 21 23 25 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9 tr tf rise/fall time (ps) supply voltage (v) parameter conditions min. typ. max units output return loss frequency <14 ghz 10 db small signal gain 27 db random jitter j r rms 0.2 ps rms deterministic jitter, j d - , 2 15 -1 prbs input [1] 2 6 ps propagation delay, td 110 ps d1 to d2 data skew, t skew <2 ps [1] deterministic jitter measured at 13 ghz with a 300 mvp-p, 2 15 -1 prbs input sequence. output differential voltage vs. supply voltage [2] 900 1000 1100 1200 1300 1400 1500 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9 +25c +85c -40c vout differential (mvp-p) supply voltage (v) 600 700 800 900 1000 1100 1200 1300 2 4 6 8 10 12 14 16 vout differential (mvp-p) frequency (ghz)
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 3 HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer input return loss vs. frequency output return loss vs. frequency -50 -40 -30 -20 -10 0 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz)
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 4 HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer eye diagram timing diagram [1] test conditions: pattern generated with an agilent n4903a serial bert. eye diagram presented on a tektronix csa 8000. device input = 10 gbps pn code, vin = 300 mvp-p differential. both output channels shown.
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 5 absolute maximum ratings electrostatic sensitive device observe handling precautions outline drawing HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer notes: 1. package body material: alumina 2. lead and ground paddle plating: 30-80 microinches gold over 50 microinches minimum nickel. 3. dimensions are in inches [millimeters]. 4. lead spacing tolerance is non-cumulative. 5. package warp shall not exceed 0.05 mm datum -c- 6. all ground leads must be soldered to pcb rf ground. 7. paddle must be soldered to gnd. power supply voltage (vee) -3.75 v to +0.5 v input signals -2 v to +0.5 v output signals -1.5 v to +1 v continuous pdiss (t = 85 c) (derate 17 mw/c above 85 c) 0.68 w thermal resistance (r th j-p ) worst case junction to package paddle 59 c/w maximum junction temperature 125 c storage temperature -65 c to +150 c operating temperature -40 c to +85 c
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 6 HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer pin number function description interface schematic 1, 4, 5, 8, 9, 12 gnd signal grounds 2, 3 10, 11 d1p, d1n d2n, d2p differential data inputs, current mode logic (cml) referenced to positive supply. 6, 7 dinp, dinn differential data outputs, current mode logic (cml) referenced to positive supply. 13, 16 vee negative supply 14, package base gnd supply ground 15 n/c no connection required. this pin may be connected to rf/dc ground without affecting performance. [1] contact hmc for alternate pinouts pin descriptions [1]
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 7 HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer evaluation pcb the circuit board used in the application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package gro- und leads should be connected directly to the ground plane similar to that shown. the exposed packaged base should be connected to gnd. a sufficient number of via holes should be used to connect the top and bottom ground planes. the evaluation circuit board shown is available from hittite upon request. list of materials for evaluation pcb 122520 [1] item description j1 - j6 pcb mount sma rf connectors j7, j9 dc pin c1 4.7 f capacitor, tantalum c5 100 pf, capacitor 0402 pkg. u1 HMC724LC3C high speed logic, fanout buffer pcb [2] 122518 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com high speed logic - smt 3 3 - 8 HMC724LC3C v03.1010 14 gbps fast rise time 1:2 fanout buffer application circuit
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