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 mux & demux - smt 3 3 - 1 the HMC855LC5 is a 1:4 demultiplexer designed for data deserialization up to 28 gbps. the device uses both rising and falling edges of the half-rate clock to sample the input data in sequence, d0-d3 and latches the data onto the differential outputs. a quarter-rate clock output generated on chip can be used to clock the data into other devices. the demux is dc coupled supporting broadband operation. all clock and data inputs to the HMC855LC5 are cml and terminated on-chip with 50 ohms to the positive supply, gnd, and may be dc or ac coupled. the differential outputs are source terminated to 50 ohms and may also be ac or dc coupled. outputs can be connected directly to a 50 ohm ground terminated system, or drive devices with cml logic input. the HMC855LC5 also features an output level control pin, vr, which allows for loss compensation or signal level optimization. the HMC855LC5 operates from a single -3.3v supply and is available in rohs compliant 5x5 mm smt package. general description HMC855LC5 features functional diagram differential & singe-ended operation half rate clock input quarter rate reference clock output fast rise and fall times: 22 ps low power consumption: 644 mw typ. programmable differential output voltage swing: 450 - 1144 mv single supply: -3.3v 32 lead ceramic 5x5 mm smt package: 25 mm 2 typical applications the HMC855LC5 is ideal for: ? sonet oc-192 ? broadband test & measurement ? serial data transmission up to 28 gbps ? fpga interfacing electrical specifcations, t a = +25c, vee = -3.3v, vr = 0v parameter conditions min. typ. max units power supply voltage -3.6 -3.3 -3.0 v power supply current 195 ma maximum data rate 28 gbps maximum clock rate, half rate 14 ghz input voltage range, cml -1.5 0.5 v input differential voltage 100 2000 mv output rise / fall time differential, 20% - 80% 22 ps input return loss frequency <28 ghz 10 db 28 gbps, 1:4 demux with programmable output voltage v00.0610
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 mux & demux - smt 3 3 - 2 electrical specifcations, (continued) HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage parameter conditions min. typ. max units output amplitude single-ended, peak-to-peak 500 mvp-p differential, peak-to-peak 1000 mvp-p output high voltage 0 mv output low voltage -500 mv output return loss frequency <22 ghz 10 db propagation delay clock to data, tpdd 149 ps propagation delay clock to output clock, tpdc 142 ps set up time, t s 16 ps hold time, t h 3 ps [1] vr = 0.0v [2] frequency = 28 gbps [3] vee = -3.3v dc current vs. supply voltage [1] [2] output differential vs. supply voltage [1] [2] output differential vs. vr [2][3] dc current vs. vr [2][3] 150 160 170 180 190 200 210 220 230 240 -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) 300 400 500 600 700 800 900 1000 1100 1200 1300 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c differential voltage (mv) vr (v) 600 700 800 900 1000 1100 1200 1300 -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) 130 140 150 160 170 180 190 200 210 220 230 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c dc current (ma) 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 mux & demux - smt 3 3 - 3 HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage [1] vr = 0.0v [2] frequency = 28 gbps [3] device measured on evaluation board with gating [4] vee = -3.3v data input return loss vs. frequency [1][3][4] clock input return loss vs. frequency [1][3][4] data output return loss vs. frequency [1][3][4] clock output return loss vs. frequency [1][3][4] rise / fall time vs. vr [2][4] rise / fall time vs. supply voltage [1][2] 16 18 20 22 24 26 -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) -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0 5 10 15 20 25 return loss (db) frequency (ghz) 16 18 20 22 24 26 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 tr tf rise/fall time (ps) vr (v) -35 -30 -25 -20 -15 -10 -5 0 5 0 5 10 15 20 25 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0 5 10 15 20 25 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 mux & demux - smt 3 3 - 4 eye diagram @ 28 gbps test conditions: differential 400 mv data input and 300 mv clock input. pattern generated with a 2 15 -1 pn 28 gbps prbs pattern. resulting in a 7 gbps output measured using a tektronix csa 8000 HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage timing diagram
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 mux & demux - 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 +0.5v junction temperature 125 c continuous pdiss (t = 85 c) (derate 33 mw/c above 85 c ) 1.33 w thermal resistance (r th j-p ) worse case device to package paddle 30 c/w storage temperature -65c to +150c operating temperature -40c to +85c 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. paddle must be soldered to vee. HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage
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 mux & demux - smt 3 3 - 6 pin number function description interface schematic 1, 2, 25, 29, 32 n/c no connection necessary. these pins may be connected to rf/dc ground without affecting performance. 3, 6, 9, 12, 13, 16, 19, 22, 26, 31 gnd these pins must be connected to a high quality rf/dc ground. 4, 5, 7, 8, 17, 18, 20, 21 d3-, d3+ d1-, d1+ d4-, d4+ d2-, d2+ differential data outputs: current mode logic(cml) referenced to positive supply 10, 11 d-, d+ differential data inputs: current mode logic (cml) referenced to positive supply 14, 15 c/2+, c/2- differential half-rate clock inputs: current mode logic (cml) referenced to positive supply 23, 24 c/4+, c/4- differential quarter-rate clock outputs: current mode logic(cml) referenced to positive supply 27, 30, package base vee these pins and the exposed paddle must be connected to the negative voltage supply. 28 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 HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage
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 mux & demux - smt 3 3 - 7 evaluation pcb list of materials for evaluation pcb 126578 [1] item description j7 - j10 pcb mount k rf connectors j3 - j6, j11 - j16 pcb mount sma rf connectors j18 -j21 dc pin jp1 2 position header with shunt c1, c2 4.7 f capacitor, tantalum c3 - c5 100 pf capacitor, 0402 pkg. r1 10 ohm resistor, 0603 pkg. u1 HMC855LC5 28 gbps 1:4 demux pcb [2] 126576 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 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. install jumper on jp1 to short vr to gnd for normal operation. HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage
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 mux & demux - smt 3 3 - 8 application circuit HMC855LC5 v00.0610 28 gbps, 1:4 demux with programmable output voltage
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