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 hmc749lc3c 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 hmc749lc3c are cml and terminated on-chip with 50 ohms to the positive supply, vcc, and may be ac or dc coupled. the differential cml outputs are source terminated to 50 ohms and may also be ac or dc coupled. outputs can be connected directly to a 50 ohm vcc-terminated system, while dc blocking capacitors may be used if the terminating system is 50 ohms to ground. the hmc749lc3c also features an output level control pin, vr, which allows for loss compensation or signal-level optimazation. the hmc749lc3c operates from a single 3.3 v supply and is available in rohs-compliant 3x3 mm smt package. general description hmc749lc3c features functional diagram supports clock frequencies up to 26 ghz differential & single-ended operation fast rise and fall times: 18 / 17 ps low power consumption: 270 mw typ. programmable differential output voltage swing: 600 - 1100 mv propagation delay: 95 ps single supply: 3.3 v 16 lead ceramic 3x3 mm smt package: 9 mm 2 typical applications the hmc749lc3c 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 specifcations, t a = +25 oc, vcc = 3.3 v, vr = 3.3 v parameter conditions min. typ. max units power supply voltage 3 3.3 3.6 v power supply current 82 ma maximum clock rate 26 ghz input voltage range vcc - 1.5 vcc + 0.5 v input differential range 0.1 2 vp-p 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply v04.1010
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 specifcations (continued) hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply parameter conditions min. typ. max units input return loss frequency <13 ghz 10 db output amplitude single-ended, peak-to-peak 550 mvp-p differential, peak-to-peak 1100 mvp-p output high voltage 3.29 v output low voltage 2.74 v 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] 2 ps, p-p propagation delay clock to q, td 95 ps propagation delay reset to q, tdr 125 ps [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 ouput. dc current vs. supply voltage [1] [2] [1] vr = +3.3v [2] frequency = 12 ghz 65 70 75 80 85 90 95 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 +25c +85c -40c dc current (ma) supply voltage (v) output differential voltage vs. supply voltage [1][2] 800 850 900 950 1000 1050 1100 1150 1200 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 +25c +85c -40c vout differential (mvp-p) 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 - 3 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply [1] vr = 3.3 v [2] frequency = 12 ghz [3] frequency = 24 ghz [4] vcc = 3.3 v input return loss vs. frequency output return loss vs. frequency rise / fall time vs. vr [1][2] output differential voltage vs. vr [1][2] -30 -25 -20 -15 -10 -5 0 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz) 15 17 19 21 23 25 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 tr (12 ghz) tf (12 ghz) tr (24 ghz) tf (24 ghz) rise/fall time (ps) vr (v) -40 -35 -30 -25 -20 -15 -10 -5 0 0 5 10 15 20 25 return loss (db) frequency (ghz) rise / fall time vs. supply voltage [1][3] 15 17 19 21 23 25 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 tr (12 ghz) tf (12 ghz) tr (24 ghz) tf (24 ghz) rise/fall time (ps) supply voltage (v) output differential voltage vs. input frequency [1][4] 500 600 700 800 900 1000 1100 1200 1300 2 6 10 14 18 22 26 30 34 +25c +85c -40c vout differential (mvp-p) frequency (ghz) 500 600 700 800 900 1000 1100 1200 1300 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 +25c +85c -40c vout differential (mvp-p) vr (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 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply 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. device is ac coupled to scope.
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 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply 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 (vcc) vcc -0.5 v to 3.75 v input signals vcc - 2.0 v to vcc + 0.5 v output signals vcc - 1.5 v to vcc + 0.5 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 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply 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 data inputs: current mode logic (cml) referenced to positive supply. 10, 11 qn, qp differential data outputs: current mode logic (cml) referenced to positive supply. 13, 16 vcc positive supply 14, package base gnd supply ground 15 vr output level control. output level may be adjusted by applying a voltage to vr per output differential vs. vr plot. [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 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply 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. install jumper on jp1 to short vr to vcc for normal operation. list of materials for evaluation pcb 090-00328-00 [1] item description j1, j2, j5, j6 pcb mount sma rf connectors j3, j4 sri-k connectors j7 - j9 dc pin jp1 shorting jumper c1, c2 4.7 f capacitor, tantalum c3 - c5 100 pf capacitor, 0402 pkg. r2 10 ohm resistor, 0603 pkg. u1 hmc749lc3c pcb [2] 122515 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 hmc749lc3c v04.1010 26 ghz, t flip-flop w/ reset, programmable output voltage & positive supply application circuit
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