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 HMC720LC3C 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 to the HMC720LC3C are cml and terminated on-chip with 50 ohms to the positive supply, gnd, and may be dc or ac coupled. outputs can be connected directly to a 50 ohm ground-terminated system or drive devices with cml logic input. the HMC720LC3C also features an ouput level control pin, vr, which allows for loss compensation or signal level optimization. the HMC720LC3C operates from a single -3.3 v supply and is available in rohs-compliant 3x3 mm smt package. general description HMC720LC3C features functional diagram inputs terminated internally in 50 ohms differential inputs are dc coupled propagation delay: 120 ps fast rise and fall times: 19 / 18 ps programmable differential output voltage swing: 600 - 1100 mvp-p power dissipation: 300 mw single supply: -3.3 v 16 lead ceramic 3x3 mm smt package: 9 mm 2 typical applications the HMC720LC3C 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 specifi cations, t a = +25 oc, vee = -3.3 v, vr = 0 v 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 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage v03.1010
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 specifi cations (continued) HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage 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] 26ps propagation delay, td 120 ps d1 to d2 data skew, t skew 0ps vr pin current vr = 0.0 v 2 ma vr pin current vr = +0.4 v 3.5 ma [1] deterministic jitter measured at 13 ghz with a 300 mvp-p, 2 15 -1 prbs input sequence. [1] vr = 0.0 v [2] frequency = 13 ghz [3] frequency = 10 ghz [4] vee = -3.3 v dc current vs. supply voltage [1][2] output differential voltage vs. vr [3][4] 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) output differential voltage vs. supply voltage [1][3] output differential voltage vs. frequency [1][4] 700 800 900 1000 1100 1200 -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) 500 600 700 800 900 1000 1100 1200 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c vout differential (mvp-p) vr (v) 400 600 800 1000 1200 1400 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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage [1] vr = 0.0 v [2] frequency = 13 ghz [3] vee = -3.3 v input return loss vs. frequency output return loss vs. frequency -30 -25 -20 -15 -10 -5 0 02468101214 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz) rise / fall time vs. vr [2][3] 10 12 14 16 18 20 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 tr tf rise/fall time (ps) vr (v) rise / fall time vs. supply voltage [1][2] 10 12 14 16 18 20 -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)
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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage eye diagram timing diagram truth table input outputs din d1 d2 lll hhh notes: din = dinp - dinn d1 = d1p - d1n d2 = d2p - d2n h - positive differential voltage l - negative differential voltage [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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage 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 vee. 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 esd sensitivity (hbm) class 1c
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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage pin number function description interface schematic 1, 4, 5, 8, 9, 12 gnd signal grounds 2, 3 10, 11 d1p, d1n d2n, d2p differential clock / data outputs: current mode logic (cml) referenced to positive supply 6, 7 dinp, dinn differential clock / data inputs: current mode logic (cml) referenced to positive supply 13, 16 gnd supply ground 14 vr output level control. output level may be adjusted by either applying a voltage to vr per output differential vs. vr plot. 15, package base vee negative supply pin descriptions
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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage 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 vee. 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. install jumper on jp1 to short vr to gnd for normal operation. list of materials for evaluation pcb 118777 [1] item description j1 - j6 pcb mount sma rf connectors j7 - j9 dc pin jp1 0.1 header with shorting jumper c1, c2 100 pf, capacitor, 0402 pkg c3, c4 4.7 f capacitor, tantalum r1 10 ohm resistor, 0603 pkg. u1 HMC720LC3C high speed logic, fanout buffer pcb [2] 118775 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 HMC720LC3C v03.1010 14 gbps, fast rise time 1:2 fanout buffer w/ programmable output voltage application circuit
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