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 HMC940LC4B is a 1:4 fanout buffer designed to support data transmission rates up to 13 gbps, and clock frequencies as high as 13 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. the HMC940LC4B also features an output level control pin, vr which allows for loss compensation or for signal level optimization. the HMC940LC4B operates from a single -3.3v dc supply and is available in a ceramic rohs compliant 4x4 mm smt package. general description HMC940LC4B features functional diagram inputs terminated internally in 50 ohms differential inputs are dc coupled propagation delay: 101 ps fast rise and fall times: 26 / 25 ps programmable differential output voltage swing: 600 - 1400 mv power dissipation: 440 mw 24 lead ceramic 4x4 mm smt package: 16 mm 2 typical applications the HMC940LC4B is ideal for: ? rf ate applications ? broadband test & measurement ? serial data transmission up to 13 gbps ? clock buffering up to 13 ghz electrical specifcations, t a = +25 oc vee = -3.3v, vr = 0v parameter conditions min. typ. max units power supply voltage (vee) -3.6 -3.3 -3.0 v power supply current 133 ma maximum data rate 13 gbps maximum clock rate 13 ghz input high voltage -0.5 0.5 v input low voltage -1.0 0.0 v input return loss frequency <15 ghz 10 db output amplitude single-ended, peak-to-peak 585 mvp-p differential, peak-to-peak 1170 mvp-p output high voltage -15 mv output low voltage -600 mv output rise / fall time single-ended, 20% - 80% 26 / 25 ps 13 gbps, 1:4 fanout buffer w/ programmable output voltage v00.0610 datasheet.in
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) HMC940LC4B v00.0610 13 gbps, 1:4 fanout buffer w/ programmable output voltage parameter conditions min. typ. max units output return loss frequency <13 ghz 10 db small signal gain 20 db random jitter j r rms 0.2 ps rms deterministic jitter, j d - , 2 15 -1 prbs input [1] 4 6 ps propagation delay, td 101 ps d1 to d2 data skew, t skew 3 ps [1] deterministic jitter measured at 13 gbps with a 300 mvp-p, 2 15 -1 prbs input sequence. [1] vr = 0.0v [2] frequency = 13 ghz [3] vee = -3.3v dc current vs. supply voltage [1] [2] output differential vs. supply voltage [1] [2] output differential vs. vr [2][3] 90 100 110 120 130 140 150 160 170 -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) 500 600 700 800 900 1000 1100 1200 1300 1400 1500 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c differential voltage (mv) vr (v) 500 600 700 800 900 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 differential voltage (mv) supply voltage (v) dc current vs. vr [2][3] 70 80 90 100 110 120 130 140 150 160 170 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c dc current (ma) vr (v) datasheet.in
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 HMC940LC4B v00.0610 13 gbps, 1:4 fanout buffer w/ programmable output voltage [1] vr = 0.0v [2] frequency = 13 ghz [3] device measured on evaluation board with gating after connector [4] device measured on evaluation board with port extensions [5] vee = -3.3v input return loss vs. frequency [1][3][5] amplitude vs. input power [1][4][5] output return loss vs. frequency [1][3][5] -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 return loss (db) frequency (ghz) -10 -5 0 5 10 15 20 25 0 3 6 9 12 15 -20 dbm -15 dbm -10 dbm -5 dbm 0 dbm amplitude (db) frequency (ghz) rise / fall time vs. vr [2][5] 20 22 24 26 28 30 -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] 20 22 24 26 28 30 -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) truth table input outputs in ox l l h h notes: in = inp - inn ox = oxp - oxn h - positive differential voltage l - negative differential voltage datasheet.in
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 HMC940LC4B v00.0610 13 gbps, 1:4 fanout buffer w/ programmable output voltage eye diagram 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 = 13 gbps pn code, vin = 300 mvp-p differential. both output channels shown. [2] 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. datasheet.in
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) -3.75v to +0.5v input signals -2v to +0.5v output signals -1.5v to +1v junction temperature 125 c continuous pdiss (t=85 c) (derate 30 mw/c above 85 c 1.22 w thermal resistance (r th j-p ) worse case junction to package paddle 32.8 c/w storage temperature -65 c to +150 c operating temperature -40 c to +85 c HMC940LC4B v00.0610 13 gbps, 1:4 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 must be soldered to pcb rf ground. 7. exposed paddle must be soldered to vee datasheet.in
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 HMC940LC4B v00.0610 13 gbps, 1:4 fanout buffer w/ programmable output voltage pin number function description interface schematic 1, 6, 8, 11, 13, 18, 19, 24 gnd these pins must be connected to a high quality rf/dc ground. 2, 3, 4, 5, 14, 15, 16, 17 o1p, o1n, o2p, o2n, o3n, o3p, o4n, o4p differential outputs: current mode logic (cml) referenced to positive supply. 7, 12, 22 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 inp, inn differential inputs: current mode logic (cml) referenced to positive supply 20, 23 package base vee these pins and the exposed paddle must be connected to the negative voltage supply. 21 vr output level control. output level may be increased or decreased by applying a voltage to vr per output differential vs. vr plot. pin descriptions datasheet.in
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 HMC940LC4B v00.0610 13 gbps, 1:4 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 126572 [1] item description j1 - j10 pcb mount sma rf connectors j15 - j18 dc pin jp1 0.1 header with shorting jumper c1, c2 4.7 f capacitor, tantalum c3 - c5 100 pf, capacitor, 0603 pkg r1 10 ohm resistor, 0603 pkg. u1 HMC940LC4B high speed logic, fanout buffer pcb [2] 126570 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 datasheet.in
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 HMC940LC4B v00.0610 13 gbps, 1:4 fanout buffer w/ programmable output voltage application circuit datasheet.in
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