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 - 1 the HMC955LC4B is a 1 to 2 demux designed to support data transmission rates up to 32 gbps. the demux uses both rising and falling edges of the half-rate clock to sample the data in sequence 01-02 and latches the data on the rising edge into the differential outputs. the demux also has high-speed clock synchronous invert input that allows for scrambling of the data. the HMC955LC4B also features an output level control pin, vr, which allows for loss compensation or for signal- level optimization. all differential inputs to the HMC955LC4B are cml and terminated on-chip with 50 ohms to the positive supply, gnd, 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 ground-terminated system or drive devices with cml logic input. the HMC955LC4B operates from a single -3.3 v supply and is available in a ceramic rohs-compliant 4x4 mm smt package. general description HMC955LC4B features functional diagram supports data rates up to 32 gbps 660 mw power consumption -3.3 v or +3.3 v operation is available supports single-ended and differential operation 24 lead ceramic 4x4 mm smt package: 16 mm 2 invert port allows scrambling for serdes application typical applications the HMC955LC4B is ideal for: ? sonet oc-192 ? broadband test & measurement equipment ? fpga interfacing circuitry ? 16 g and 32 g fiber channel ? 100 gbit ethernet ? adc encoder parameter conditions min. typ. max units power supply voltage (vee) -3.6 -3.3 -3.0 v power supply current 200 ma maximum data rate 32 gbps maximum clock rate 16 ghz input voltage range, c and din -1.5 0.5 v input differential range, c and din 0.1 2.0 vp-p data input return loss frequency <26 gbps 10 db clock input return loss frequency <16 ghz 10 db invert input return loss frequency <16 ghz 10 db 32 gbps, 1:2 demux w/ programmable output voltage v00.0511 electrical specifcations, t a = +25 oc, vee = -3.3 v, vr = 0 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 - 2 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 -25 mv output low voltage -525 mv output rise / fall time single-ended, 20% - 80% 19 ps output return loss frequency <26 gbps 10 db random jitter j r rms [1] <0.2 ps rms vr pin current vr = 0.0 v 3 ma deterministic jitter, j d - , 2 7 -1 prbs input [1] <3 ps propagation delay, tcpd rising edge 119 ps data setup time, t s 1 ps data hold time, t h 7 ps invert setup time, t is 0 ps invert hold time, t ih 11 ps [1] jitter captured at 13 gbps, 2 7 -1 prbs input. [1] vr = 0.0 v [2] frequency = 16 gbps [3] vee = -3.3 v electrical specifcations (continued) dc current vs. supply voltage [1][2] dc current vs. vr [2][3] 150 175 200 225 250 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c d c c u r r e n t ( m a ) vr (v) 140 160 180 200 220 240 260 -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) HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ 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 [1] vr = 0.0v [2] frequency = 16 gbps output [3] device measured on evaluation board with gating after connector [4] vee = -3.3 v rise / fall time vs. vr [2][4] rise / fall time vs. supply voltage [1][2] clock input return loss vs. frequency [1][3][4] HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ programmable output voltage 14 16 18 20 22 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9 tr tf r i s e / f a l l t i m e ( p s ) supply voltage (v) 12 14 16 18 20 22 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 tr tf r i s e / f a l l t i m e ( p s ) supply voltage (v) -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 18 21 24 27 device eval board r e t u r n l o s s ( d b ) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 18 21 24 27 device eval board r e t u r n l o s s ( d b ) frequency (ghz) output differential vs. vr [2][4] data output differential vs. supply voltage [1][2] 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 v o u t d i f f e r e n t i a l ( m v p - p ) supply voltage (v) 400 500 600 700 800 900 1000 1100 1200 1300 1400 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 +25c +85c -40c v o u t d i f f e r e n t i a l ( m v p - p ) vr (v) data output return loss vs. frequency [1][3][4]
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 - 4 eye diagram, 16 gbps [1] test conditions: single-ended 200 mv, 32 gbps data input;16 ghz clock input pattern generated with a 2 7 -1 quasi pn, 32 gbps prbs pattern resulting in 16 gbps, 2 7 -1 quasi pn output measured with tektronix csa 8000 HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ programmable output voltage timing diagram data input return loss vs. frequency [1][3][4] -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 18 21 24 27 device eval board r e t u r n l o s s ( d b ) frequency (ghz) invert input return loss vs. frequency [1][3][4] -40 -35 -30 -25 -20 -15 -10 -5 0 5 0 3 6 9 12 15 18 21 24 27 device eval board r e t u r n l o s s ( d b ) 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 - 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 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 esd sensitivity (hbm) class 1b 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. exposed paddle must be soldered to vee HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ 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 - 6 pin number function description interface schematic 1, 6, 8, 11, 13, 18 gnd signal grounds 2, 3 4, 5 9, 10 dp, dn cp, cn ip, in differential data inputs: 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. 14, 15 16, 17 o2n, o2p o1n, o1p differential outputs: current mode logic (cml) referenced to positive supply 19, 24 gnd supply grounds 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 HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ 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 - 7 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 eval01-HMC955LC4B [1] item description j1 - j10 pcb mount 2.92 mm rf connectors j15 - j18 dc pin jp1 0.1 header with shorting jumper c1, c2 4.7 f capacitor, tantalum c3 - c5 330 pf, capacitor, 0603 pkg r1 10 ohm resistor, 0603 pkg. u1 HMC955LC4B high speed logic, 1:2 demux pcb [2] 126570 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 evaluation pcb HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ 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 - 8 application circuit HMC955LC4B v00.0511 32 gbps, 1:2 demux w/ programmable output voltage
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