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 high speed logic - smt 7 7 - 1 the HMC842LC4B is a 1:2 fanout buffer designed to support data transmission rates up to 45 gbps. the device can also operate with clock signals up to 28 ghz. during normal operation, input data (or clock) is transferred to both output channels. differential input and output signals of the HMC842LC4B are terminated with 50 ohms to ground on-chip, and may be either ac or dc coupled. the outputs can be connected directly to a 50 ohms-to-ground terminated system, while dc blocking capacitors should be used if the terminating system is 50 ohms to a non-ground dc voltage. the HMC842LC4B also features two separate output level control pins, vac1 and vac2 which provide loss compensation and signal level optimization for each output channel independently. the HMC842LC4B operates from a single -3.3v dc supply and is available in a ceramic rohs compliant 4x4 mm smt package. general description HMC842LC4B features functional diagram supports clock frequencies up to 28 ghz independent programmable output swing for each channel: 400 - 1200 mvp-p diff. supports single-ended or differential operation power consumption: 465 mw less than 500 fs additive rms jitter fast rise and fall times: <12ps 24 lead 4x4mm smt package: 16mm 2 typical applications the HMC842LC4B is ideal for: ? oc-768 and sdh stm-256 equipment ? rf ate applications ? short, intermediate, & long haul fiber optic applications ? broadband test & measurement ? serial data transmission up to 45 gbps ? clock buffering up to 28 ghz electrical specifcations, t a = +25c, vee = -3.3v parameter conditions min. typ. max units power supply voltage 5 % tolerance -3.47 -3.3 -3.13 v power supply current vac1 = vac2 = -0.3v (vout = 930 mvp-p diff @ 40 gbps) 120 140 160 ma output amplitude control voltage (vac1, vac2) -1.4 -0.3 0 v maximum data rate 45 gbps maximum clock rate 28 32 ghz input amplitude single-ended, peak-to-peak 50 1000 mvp-p differential, peak-to-peak 100 2000 input high voltage -0.5 0.5 v input low voltage -1 0 v 45 gbps, fanout buffer w/ programmable output voltage v01.0710
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 high speed logic - smt 7 7 - 2 electrical specifcations, (continued) HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage parameter conditions min. typ. max units output amplitude differential, peak-to-peak @ 40 gbps 400 1200 mvp-p output high voltage vac = -0.3 -10 mv output low voltage vac = -0.3 -550 mv input return loss frequency < 32 ghz 10 db output return loss frequency < 32 ghz 7 db deterministic jitter, jd [1] 3 ps, pp additive random jitter jr @ 28 ghz clock input 0.3 ps rms @ 32 ghz clock input 0.6 ps rms rise time, tr [1] 11 ps fall time, tf [1] 11 ps propagation delay, td 10 ps out1 to out2 data skew, t skew [1] 2 ps [1] data input: 40 gbps prbs 2 23 -1 pattern, 150 mvp-p single-ended [1] vac = -0.3v [2] input data rate: 40 gbps prbs 2 23 -1 [3] frequency = 20 ghz dc current vs. supply voltage [1] [2] differential output swing vs. supply voltage [1] [2] differential output swing vs. vac [3] differential output swing vs. frequency [1] 50 75 100 125 150 175 200 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 +25c +70c -40c supply voltage vee (v) dc current (ma) 0 200 400 600 800 1000 1200 1400 -1.4 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 +25c +70c -40c control voltage vac (v) differential voltage (mvp-p) 600 700 800 900 1000 1100 1200 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 +25c +70c -40c supply voltage vee (v) differential voltage (mvp-p) 0 200 400 600 800 1000 1200 1400 0 4 8 12 16 20 24 28 32 +25c +70c -40c frequency (ghz) differential voltage (mvp-p)
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 high speed logic - smt 7 7 - 3 HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage [1] vac = -0.3v [2] input data rate: 40 gbps prbs 2 23 -1 [3] data was taken at single ended output [4] source jitter was not deembeded [5] device measured on evaluation board with single-ended time domain gating. rise / fall time vs. vac [1][2][3] input return loss vs. frequency [1][5] peak-to-peak jitter vs. supply voltage [1][2][3][4] output return loss vs. frequency [1][5] fall time vs. supply voltage [1][2][3] rise time vs. supply voltage [1][2][3] 6 8 10 12 14 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 +25c +70c -40c supply voltage vee (v) rise time (ps) 6 8 10 12 14 -1.4 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 rise time fall time control voltage vac (v) rise/fall time (ps) -30 -25 -20 -15 -10 -5 0 0 4 8 12 16 20 24 28 32 data frequency (ghz) response (db) 6 8 10 12 14 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 +25c +70c -40c supply voltage vee (v) fall time (ps) 0 2 4 6 8 -3.47 -3.41 -3.36 -3.3 -3.24 -3.19 -3.13 +25c +70c -40c supply voltage vee (v) p-p jitter (ps) -40 -35 -30 -25 -20 -15 -10 -5 0 0 4 8 12 16 20 24 28 32 out1 out2 frequency (ghz) response (db)
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 high speed logic - smt 7 7 - 4 HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage 40 gbps differential output eye diagram 28 ghz differential output eye diagram timing diagram measurements current min max total meas. eye amp 921 mv 920 mv 922 mv 75 rise time 11.11 ps 10.89 ps 11.11 ps 75 fall time 11.11 ps 10.44 ps 11.11 ps 75 p-p jitter 5.778 ps 5.333 ps 5.778 ps 75 measurements current mean min max v amp 558.99 mv 556.8 mv 543.46 mv 577.62 mv rise time 6.86 ps 6.816 ps 6.28 ps 7.43 ps fall time 6.91 ps 6.473 ps 5.84 ps 7.01 ps time scale: 10 ps/div amplitude scale: 210 mv/div test conditions: vee = -3.3v, vac = -0.3v input data: single ended 150 mvp-p 40 gbps nrz prbs 2 23 -1 pattern time scale: 12 ps/div amplitude scale: 120 mv/div test conditions: vee = -3.3v, vac = -0.3v input data: single ended 300 mvp-p 28 ghz clock signal input outputs d out1 out2 l l l h h h notes: d = dp - dn out1 = outp1 - outn1 out2 = outp2 - outn2 h - logic high l - logic low
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 high speed logic - smt 7 7 - 5 absolute maximum ratings electrostatic sensitive device observe handling precautions outline drawing power supply voltage (vee) -3.7v to +0.5v input voltage -1.3v to +0.5v channel temperature 125c continuous pdiss (t = 85c) (derate 18.48 mw/c above 85c) 0.74 w thermal resistance (channel to ground paddle) 54.11 c/w storage temperature -65c to +125c operating temperature -40c to +70c output amplitude control voltage (vac) -2.3v to +0.5v HMC842LC4B v01.0710 45 gbps, 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 0.05mm datum -c- 6. all ground leads and ground paddle must be soldered to pcb rf ground.
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 high speed logic - smt 7 7 - 6 HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage pin number function description interface schematic 1 vac1 output amplitude control voltage for out1 2, 5, 8, 11, 14, 17, 21 package bottom gnd signal and supply grounds 3, 4 outp1, outn1 differential (outp1-outn1) or single ended (outp1) outputs 6, 7, 12, 13, 19, 24 n/c the pins are not connected internally; however, all data shown herein was measured with these pins connected to rf/dc ground externally. 9, 10 dn, dp differential (dp-dn) or single ended (dp) inputs 15, 16 outn2, outp2 differential (outp2-outn2) or single ended (outp2) outputs 18 vac2 output amplitude control voltage for out2 20, 22, 23 vee power supply (-3.3v) pin descriptions
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 high speed logic - smt 7 7 - 7 evaluation pcb HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage list of materials for evaluation pcb 129151 [1] item description j1 - j6 k connector j9 - j12 dc pin c1, c3 - c6 1000 pf capacitor, 0402 pkg. c2 0.1 f capacitor, 0402 pkg. c7 - c9 4.7 f capacitor, tantalum u1 HMC842LC4B 1:2 fanout buffer pcb [2] 129821 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 item description j1 outp1 j2 outn1 j3 outp2 j4 outn2 j5 dn j6 dp j9 vac1 j10 vac2 j11 gnd j12 vee 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 metal package base must 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.
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 high speed logic - smt 7 7 - 8 HMC842LC4B v01.0710 45 gbps, fanout buffer w/ programmable output voltage application circuit
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