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 comparators - smt 7 7 - 1 the HMC974LC3C is a sige monolithic, ultra fast window comparator with level latched output driver with reduced swings. the window comparator is based on the hmc674lc3c single comparator and incorporates two such comparators and additional output logic. three output ports detect whether an analog input signal is above, below or between two reference levels supplied at its input as shown on the timing diagram herein. the outputs are single-ended negative logic. incor- porating two proven comparators at the input provides good dc and dynamic matching and reduces the input capacitance. the reduced swing output stages are designed to directly drive 400 mv into 50 ohms terminated to a voltage vterm = vcco-2 v. HMC974LC3C features high speed latches that can either be enabled to latch the output data, or can be left in the transparent mode to implement a tracking window comparator. general description HMC974LC3C features functional diagram propagation delay: 88 ps overdrive & slew rate dispersion: 20 ps minimum detectable pulse width: 60 ps differential latch control power dissipation: 240 mw 16 lead 3x3mm smt package: 9mm 2 typical applications the HMC974LC3C is ideal for: ? ate applications ? high speed instrumentation ? clock and data restoration ? semiconductor test systems ? ew systems - threshold detection electrical specifcations, t a = +25 c ns = -3v, ps = +3.3v, vcco = +2v, v term = 0v, vcm = 0v, vod = 50mv [1] parameter conditions min. typ. max units dc input characteristics offset voltage -10 4 10 mv bias current wit termination open -30 20 30 ua differential voltage (max) -2 2 v input impedance win to wit 50 ohms input impedance rt to wit 50 ohms input impedance rb to wit 50 ohms common mode input voltage range -1.5 1.5 v input capacitance 1 pf 10 ghz, high speed window comparator v00.0110
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 comparators - smt 7 7 - 2 electrical specifcations, (continued) HMC974LC3C v00.0110 10 ghz, high speed window comparator parameter conditions min. typ. max units l atch e na b le c haracteristics le / le "l" 1.6 v le / le h 2.4 v le / le impedance (if not driven the device is unlatched) 7.8 kohms dc o utput c haracteristics output voltage high level, voh (50 ohms to 0v) 1.06 v output voltage low level, vol (50 ohms to 0v) 0.73 v output voltage swing 320 365 410 mv ac p er f ormance propagation delay dispersion vs. vod for vod > 50mv 20 ps rise time (each output), tr 20% to 80% 25.3 ps fall time (each output), tf 80% to 20% 21.9 ps minimum detectable pulse width vcm = 0v; 100 mv overdrive voltage 60 ps equivalent input bandwidth [2] 11 ghz input-to-output delay 88 ps latch-to-output delay 83 ps max. input slew rate 5 v/ns noise (rti) 6 nv/ (hz) random jitter (rms) at 5 gbps with 100 mv overdrive 0.2 ps rms deterministic jitter (pp) at 5 gbps with 100 mv overdrive 2 ps power supplies (including load) ips 13.4 14.9 16.5 ma ins 28.3 29.9 31.6 ma icco 70 72.3 79.6 ma pd 240 mw [1] vcco can be set between +3.3v and 0v; vterm = vcco-2v rspecl levels are obtained with vcco=+3.3v and vterm=+1.3v; rsecl levels are obtained with vcco=0v and vterm= -2 v [2] equivalent input bandwidth is calculated with the following formula: bweq=0.22/ (trcomp2-trin2) where trin is the 20%/80% transition time of a quasi-gaussian signal applied to the comparator input, and trcomp is the effective transition time digitized by the comparator.
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 comparators - smt 7 7 - 3 HMC974LC3C v00.0110 10 ghz, high speed window comparator output voltage swing vs. temperature output rise / fall time power supply currents output voltage vs. temperature dispersion vs. overdrive voltage -15 0 15 30 45 60 75 0 10 20 30 40 50 60 70 80 90 100 110 vcm = +0.5v vcm = -0.5v vcm = 0v dispersion (ps) overdrive voltage (mv) 0.3 0.38 0.46 0.54 0.62 -45 -32 -19 -6 7 20 33 46 59 72 85 orb swing wout swing urb swing voltage (v) temperature (c) 20 22 24 26 28 30 32 34 36 -45 -32 -19 -6 7 20 33 46 59 72 85 orb tr wout tr urb tr orb tf wout tf urb tf delay (ps) temperature (c) 0.5 0.7 0.9 1.1 1.3 1.5 -45 -32 -19 -6 7 20 33 46 59 72 85 orb voh wout voh urb voh orb vol wout vol urb vol voltage (v) temperature (c) 10 20 30 40 50 60 70 80 -45 -32 -19 -6 7 20 33 46 59 72 85 i_vcco i_vcci i_vee current (ma) temperature (c)
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 comparators - smt 7 7 - 4 HMC974LC3C v00.0110 10 ghz, high speed window comparator eye diagram @ 5 gbps timing diagram parameter conditions bit rate 5 gbps pattern length 2 15 -1 dj (p-p) 2.15 ps vertical scale 80 mv / div time scale 33.3 ps / div
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 comparators - smt 7 7 - 5 HMC974LC3C v00.0110 10 ghz, high speed window comparator absolute maximum ratings electrostatic sensitive device observe handling precautions outline drawing input supply voltage (vcci to gnd) -0.5v to +4v output supply voltage (vcco to gnd) -0.5v to +4v positive supply differential (vcci - vcco) -0.5v to +3v input voltage -2v to +2v differential input voltage -2v to +2v output current 40 ma junction temperature 125c continuous pdiss (t = 85c) (derate 20.4 mw/c above 85c) 0.816 w thermal resistance (rth) (junction to lead) 49 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. p addle must be soldered to ns .
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 comparators - smt 7 7 - 6 HMC974LC3C v00.0110 10 ghz, high speed window comparator pin descriptions pin number function description interface schematic 1 rt termination resistor for reference top. 2 win window analog input. 3 wit window cm for termination resistors. 4 rb termination resistor return for reference bottom. 5, 16 ps positive supply voltage input stage. 6 le latch enable input pin, inverting side. 7 le latch enable input pin, non-inverting side. 8, 14 ns negative power supply, -3v. 9, 13 vcco positive supply voltage for the output stage. 10 urb under-range output. urb is asserted low when the analog input voltage is below rb. 11 woutb window output. woutb is asserted low when the analog input voltage is between rb and rt. 12 orb over-range output. orb is asserted low when the analog input voltage range is above rt. 15 rtn return for esd protection. package base exposed paddle should be connected to ns (negative power supply, -3v)
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 comparators - smt 7 7 - 7 evaluation pcb HMC974LC3C v00.0110 10 ghz, high speed window comparator list of materials for evaluation pcb 129538 [1] item description j1 conn header 8 pos vert tin j2 - j7 k connector, sri j8 terminal strip, single row 3 pin jp1, jp2 conn header 2 pos vert tin c1 - c3, c5, c6, c8 - c10, c15 100 pf capacitor, 0402 pkg. c4, c7, c11 330 pf capacitor, 0402 pkg. c12 - c14 4.7 f capacitor, tantalum tp1 - tp4 dc pin u1 HMC974LC3C window comparator pcb [2] 125933 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 ns. 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 comparators - smt 7 7 - 8 HMC974LC3C v00.0110 10 ghz, high speed window comparator application circuit
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