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 limiting amplifiers - smt 6 6 - 1 hmc750lp4 / 750lp4e v03.0111 functional diagram electrical specifcations, t a = +25 c, vcc = +5v, vc1 = +2.5v t he h m c750 lp 4( e ) is ideal for: ? oc-192 r eceivers ? 10 g bps e thernet r eceivers ? 10 g bps f iber channel r eceivers ? broadband t est & m easurement s upports data r ates up to 12.5 g bps differential g ain: 44 db 2mv p-p input s ensitivity 3 db bandwidth: 11 g hz i ntegrated dc offset correction a djustable differential s aturated o/ p voltage s wing up to 880 mvp-p s ingle +5v p ower s upply very l ow rms jitter degradation 24 l ead p lastic 4x4mm smt p ackage: 16mm2 h m c750 lp 4 e is a limiting amplifer designed to sup- port data transmission rates up to 12.5 g bps. t he amplifer can operate over a wide range of input voltage levels and provides constant-level differential output swing. h m c750 lp 4 e also features an output level control pin, vc1, which allows for loss compensation or for signal level optimization. differential output signal swing can be adjustable up to 880 mvp-p. i nput signals higher than 3mv p-p can be amplifed to saturated 880mv p-p differential signal. a ll single-ended input signals to the h m c750 lp 4 e are terminated with 50 ohms to +5v on-chip, and may be either a c or dc coupled. t he outputs of the h m c750 lp 4 e may be operated either differentially or single-ended. outputs can be connected directly to a 50 ohm terminated system referenced to +5v, while dc blocking capacitors may be used if the terminating system is 50 ohms to a non +5v voltage. t he h m c750 lp 4 e operates from a single + 5v dc supply and is available in a plastic r oh s compliant 4x4 mm smt package. p arameter conditions m in. t yp. m ax. units power supply voltage 4.6 5 5.4 v p ower s upply current vc1 = 2.5v 106 122 m a m aximum data r ate 12.5 g bps differential s mall s ignal g ain vc1 = 2.5v 44 db s mall s ignal bandwidth 3-db cutoff 11 g hz deterministic jitter [1] vin = 20 mv peak to peak 5 ps p-p a dditive r andom jitter [2] vin = 200 mv peak to peak 0.2 ps rms typical applications features general description 12.5 gbps limiting amplifier
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 limiting amplifiers - smt 6 6 - 2 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier p arameter conditions m in. t yp. m ax. units r ise t ime 20% - 80% 23 27 ps f all t ime 20% - 80% 21 23 ps data output s wing differential output s wing. vc1 = 3v for maximum output swing. 850 880 mvp-p i nput r eturn l oss up to 10 g hz 15 db output r eturn l oss up to 10 g hz 8 db i nput s ensitivity 2 mvp-p m aximum i nput s wing 1200 mvp-p output offset voltage vc1 = 3v for maximum output swing 3 mv vc1 2 3 v vout dc 4.5 4.8 v [1] deterministic jitter measured at 10 g bps with pr b s 2 23 -1 pattern. i t is the peak to peak deviation from the ideal time crossing [2] r andom jitter is measured with 10 g bps 10101 pattern electrical specifcations (conditions) differential output vs. supply voltage [1] differential output vs. control voltage [2] 0 200 400 600 800 1000 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 +25c +85c -40c supply voltage vcc (v) differential voltage (mv) 0 200 400 600 800 1000 1200 2.1 2.3 2.5 2.7 2.9 3.1 +25c +85c -40c control voltage vc1 (v) differential voltage (mv) [1] vc1 = 2.5v [2] vcc = 5v [3] i nput data r ate = 10 g bps differential output vs. vinput [1][2] rms jitter vs. vinput [1][2][3] 0 100 200 300 400 500 600 0.1 1 10 100 1000 vin (mv) differential voltage (mv) 0 1 2 3 4 5 6 0 100 200 300 400 500 600 vin (mv) rms jitter (ps)
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 limiting amplifiers - smt 6 6 - 3 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier rise & fall time vs. vinput [1] [2] [3] dc current vs. supply voltage [1] [3] 20 24 28 32 36 40 0 100 200 300 400 500 600 rise time fall time vin (mv) rise time, fall time 20%-80% (ps) 0 40 80 120 160 200 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 +25c +85c -40c supply voltage vcc (v) dc current (ma) [1] vc1 = 2.5v [2] vcc = 5v [3] i nput data r ate = 10 g bps dc current vs. control voltage [2] [3] differential gain vs. frequency [1] [2] 20 50 80 110 140 170 200 2.1 2.3 2.5 2.7 2.9 3.1 +25c +85c -40c control voltage vc1 (v) dc current (ma) 0 10 20 30 40 50 0 2 4 6 8 10 12 14 16 frequency (ghz) gain (db) return loss [1] [2] -50 -40 -30 -20 -10 0 0 2 4 6 8 10 12 14 16 s11 s22 frequency (ghz) return loss (db)
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 limiting amplifiers - smt 6 6 - 4 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier output eye diagram t est conditions e ye diagram data presented on an i nfnium dc a 86100 a r ate = 10 g b/s p seudo r andom code = 2 23 -1 vin = 100 mvpp differential, vc1 = 3v output eye diagram t est conditions e ye diagram data presented on an i nfnium dc a 86100 a r ate = 10 g b/s p seudo r andom code = 2 23 -1 vin = 500 mvpp differential, vc1 = 3v current m inimum m aximum t otal m eas r ise t ime (f1) 23.33 ps 23.33 ps 23.33 ps 32 f all t ime (f1) 24.67 ps 24.00 ps 25.33 ps 32 differential e ye a mplitude (f1) 860 mv 858 mv 860 mv 32 e ye s / n (f1) 15.35 15.28 15.50 32 vertical s cale 100 mv / div horizontal s cale 30.0 ps / div current m inimum m aximum t otal m eas r ise t ime (f1) 23.33 ps 22.67 ps 23.33 ps 30 f all t ime (f1) 24.67 ps 24.67 ps 26.00 ps 30 differential e ye a mplitude (f1) 862 mv 861 mv 862 mv 30 e ye s / n (f1) 15.27 15.19 15.35 30 vertical s cale 100 mv / div horizontal s cale 30.0 ps / div
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 limiting amplifiers - smt 6 6 - 5 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier input signal output signal i nput and output signal for 10 g bps, pr b s 2 23 -1, 3.5mv p-p differential, vc1 = 3v. s upply voltage 5.6v i nput s ignals 4v to 5.5v rf i nput p ower 10 dbm junction t emperature 125 c continuous p diss ( t = 85c) (derate 24 mw/c above 85c) 0.95 watts t hermal r esistance ( r th ) (junction to ground paddle) 42 c/w s torage t emperature -65 to 150 c operating t emperature -40 to +85 c absolute maximum ratings
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 limiting amplifiers - smt 6 6 - 6 outline drawing p art n umber p ackage body m aterial l ead f inish msl r ating p ackage m arking [3] h m c750 lp 4 l ow s tress i njection m olded p lastic s n/ p b s older msl 1 [1] h750 xxxx h m c750 lp 4 e r oh s -compliant l ow s tress i njection m olded p lastic 100% matte s n msl 1 [2] h750 xxxx [1] m ax peak refow temperature of 235 c [2] m ax peak refow temperature of 260 c [3] 4-digit lot number xxxx package information n o tes : 1. lea d frame material : co pper all oy 2. d imensi o ns are in in ch es [ millimeters ]. 3. lea d spa c ing to leran c e is n o n -cu m u lati v e 4. pa d bu rr lengt h s h all b e 0.15mm ma x im u m . pa d bu rr h eig h t s h all b e 0.05mm ma x im u m . 5. pa ck age w arp s h all n ot e xc ee d 0.05mm. 6. all gr ou n d lea d s an d gr ou n d pa dd le m u st b e s o l d ere d to p cb rf gr ou n d. 7. refer to h m c appli c ati o n n o te f o r s u ggeste d p cb lan d pattern . hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier
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 limiting amplifiers - smt 6 6 - 7 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier p in n umber f unction description i nterface s chematic 1, 18, 19, 22 - 24 vcc p ositive supply. 2, 5, 14, 17, g round p addle gn d s ignal and supply ground. p ackage base must be connected to dc ground. 3, 4 inp , inn data inputs 6, 7, 9 - 13 n /c n o connection. t hese pins are not connected internally, but should be connected to ground externally. 8 vc1 g ain, output level control. 15, 16 ou tn , ou tp data outputs 20, 21 c n , c p f ilter capacitor for offset correction. connect 100n f capacitor between c p and c n . pin descriptions
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 limiting amplifiers - smt 6 6 - 8 evaluation pcb t he circuit board used in the application should use rf circuit design techniques. s ignal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be con - nected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. t he evaluation circuit board shown is available from hittite upon request. list of materials for evaluation pcb 121600 [1] i tem description j1 - j4 p cb m ount sma connector j6, j8, j9 dc p in c1, c2, c13 0.1 f capacitor, 0402 p kg. c5 - c7 1 n f capacitor, 0402 p kg. c14 4.7 f capacitor, 0402 p kg. c16 100 p f capacitor, 0402 p kg. c17 10 n f capacitor, 0402 p kg. r 1 - r 4 0 ohm r esistor, 0402 p kg. r 7 620 ohm r esistor, 0402 p kg. u1 h m c750 lp 4( e ) l imiting a mplifer p cb [2] 121598 e valuation p cb [1] r eference this number when ordering complete evaluation p cb [2] circuit board m aterial: a rlon 25 fr hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier
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 limiting amplifiers - smt 6 6 - 9 application circuit hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier
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 limiting amplifiers - smt 6 6 - 10 hmc750lp4 / 750lp4e v03.0111 12.5 gbps limiting amplifier application information setting the output swing using external resistor rc t he h m c750 lp 4 e features output swing level adjustment by using vc1 pin. output swing can be adjusted to the desired level by applying a dc voltage to vc1 pin. differential output swing vs. control voltage relationship is given in the plot below. differential output vs. control voltage 0 200 400 600 800 1000 1200 2.1 2.3 2.5 2.7 2.9 3.1 +25c +85c -40c control voltage vc1 (v) differential voltage (mv) i n order to adjust the dc voltage on vc1 pin a resistor, r c ( r 7 in application circuit), should be connected between vc1 pin and vcc as shown in the fgure below. t he value of the resistor can be chosen using the following equation as a function of vc1. vc1 dc voltage value can be chosen by using the plot given above.
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