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 HMC679LC3C is a t flip-flop w/reset desig- ned to support clock frequencies as high as 26 ghz. during normal operation, with the reset pin not asserted, the output toggles from its prior state on the positive edge of the clock. this results in a divide-by- two function of the clock input. asserting the reset pin forces the q output low regardless of the clock edge state (asynchronous reset assertion). reversing the clock inputs allows for negative-edge triggered applications. all differential inputs to the HMC679LC3C 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 HMC679LC3C also features an ouput level control pin, vr, which allows for loss compensation or signal level optimization. the HMC679LC3C operates from a single -3.3 v supply and is available in rohs-compliant 3x3 mm smt package. general description HMC679LC3C features functional diagram supports clock frequencies up to 26 ghz differential or single-ended operation fast rise and fall times: 18 / 17 ps low power consumption: 270 mw typ. programmable differential output voltage swing: 600 - 1100 mvp-p propagation delay: 95 ps single supply: -3.3 v 16 lead ceramic 3 x 3 mm smt package: 9 mm 2 typical applications the HMC679LC3C is ideal for: ? serial data transmission up to 26 gbps ? high speed frequency divider (up to 26 ghz) ? broadband test & measurement ? rf ate applications electrical speci 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 82 ma maximum clock rate 26 ghz input voltage range -1.5 0.5 v input differential range 0.1 2.0 vp-p input return loss frequency <23 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 26 ghz, t flip-flop w/ reset & programmable output voltage v05.1010
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 speci cations (continued) HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & programmable output voltage parameter conditions min. typ. max units output rise / fall time differential, 20% - 80% 18 / 17 ps output return loss frequency <13 ghz 10 db random jitter jr rms [1] 0.2 ps rms deterministic jitter, jd peak-to-peak, 2 15 -1 prbs input [2] 2ps, p-p propagation delay clock to q, td 95 ps propagation delay reset to q, tdr 125 ps vr pin current vr = 0.0 v 2 ma vr pin current vr = +0.4 v 3.5 ma [1] upper limit of random jitter, j r , determined by measuring and integrating output phase noise with a sinusodal input at 5, 10, and 13.5 ghz over temperature. [2] deterministic jitter calculated by simultaneously measuring the jitter of a 200 mv, 12.5 ghz, 2 15 -1 prbs input, and a single-ended output dc current vs. supply voltage [1][2] [1] vr = 0.0 v [2] frequency = 13 ghz [3] frequency = 24 ghz 60 65 70 75 80 85 90 95 100 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9 +25 c +85 c -40 c dc current (ma) supply voltage (v) output differential voltage vs. supply voltage [1][2] rise / fall time vs. supply voltage [1][3] 12 14 16 18 20 22 -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) output differential voltage vs. input frequency [1] 800 900 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) 400 500 600 700 800 900 1000 1100 1200 8 12162024283236 vout differential (mvp-p) input 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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & programmable output voltage input return loss vs. frequency [4] output differential voltage vs. vr [2] rise / fall time vs. vr [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) [1] vr = 0.0 v [2] frequency = 13 ghz [3] frequency = 24 ghz [4] device measured on evaluation board with single- ended, time-domain gating 500 600 700 800 900 1000 1100 1200 1300 1400 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25 c +85 c -40 c vout differential (mvp-p) vr (v) output return loss vs. frequency [4] reset input return loss vs. frequency [4] -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 4 8 1216202428 eval board device return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 5 02468101214 eval board device return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 02468101214 eval board device 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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & programmable output voltage output waveform timing diagram [1] test conditions: waveform generated with a cw signal source input at 26 ghz. diagram data presented on a tektronix csa 8000.
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 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 l-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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & 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.
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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & programmable output voltage pin descriptions pin number function description interface schematic 1, 4, 5, 8, 9, 12 gnd signal grounds 2, 3 rp,rn differential reset inputs: current mode logic (cml) referenced to positive supply. 6, 7 cp,cn differential clock inputs: current mode logic (cml) referenced to positive supply. 10, 11 qn, qp differential clock outputs: current mode logic (cml) referenced to positive supply. 13, 16 gnd supply ground 14 vr output level control. output level may be increased or decreased by applying a voltage to vr per output differential vs. vr plot. 15, package base vee this pin and the exposed paddle must be connected to the negative voltage supply.
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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & 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 hit- tite upon request. install jumper on jp1 to short vr to gnd for normal operation. list of materials for evaluation pcb 123585 [1] item description j1, j2, j5, j6 pcb mount sma rf connectors j3, j4 pcb mount 2.92mm 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 HMC679LC3C 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 HMC679LC3C v05.1010 26 ghz, t flip-flop w/ reset & programmable output voltage application circuit
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