12 - 1 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 variable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 functional diagram t he h m c680 lp 4( e ) is a digitally controlled variable gain amplifer which operates from 30 to 400 m hz, and can be programmed to provide -4 d b to +19 d b of gain, in 1 d b steps. t he h m c680 lp 4( e ) delivers noise fgure of 5 d b in its maximum gain state, with output ip 3 of up to +40 d b m in any state. t his high linearity d v ga also provides a differential rf output which can be used to interface directly with sa w flters in t x and r x applications, and with digital to analog converters in r x chains. t he h m c680 lp 4( e ) is housed in a r oh s compliant 4x4 mm q fn leadless package, and is c m o s / ttl compatible. typical applications features general description bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz electrical specifcations, t a = +25 c, 50 ohm system, vdd = +5v p arameter m in. t yp. m ax. units f requency r ange 30 - 400 m hz g ain ( m aximum g ain s tate) 17 19 d b g ain control r ange 23 d b i nput r eturn l oss 12 d b output r eturn l oss 13 d b g ain a ccuracy: ( r eferenced to m aximum g ain s tate) a ll g ain s tates (0.15 + 3% of g ain s etting) m ax. d b output p ower for 1d b compression 23 25 d b m output t hird order i ntercept p oint ( t wo- t one output p ower= +5 d b m e ach t one) [1] 40 d b m output s econd order i ntercept p oint ( t wo- t one output p ower= +5 d b m e ach t one) [1] 65 d b m harmonics 2nd order 3rd order 70 75 d b c d b c s tep a ccuracy ( r eferenced to m aximum g ain s tate) 0.2 d b n oise f igure (max gain state) 5 d b s witching characteristics t r ise, t f all (10/90% rf ) to n , to ff (50% c tl to 10/90% rf ) 11 13 ns ns control s upply current i dd 4 5 m a a mp s upply current ( rf ou tp ) 122 135 m a a mp s upply current ( rf ou tn ) 122 135 m a [1] t est frequency 50 m hz t he h m c680 lp 4( e ) is ideal for: ? cellular/3 g i nfrastructure ? wi b ro / wi ma x / 4 g ? m icrowave r adio & v sat ? t est e quipment and s ensors ? if & rf a pplications ttl /c m o s compatible parallel or latched parallel control interface high output ip 3: +40 d b m ( a t all gain settings) l ow n oise f igure: 5 d b wide g ain control r ange: 23 d b 24 l ead 4x4 mm smt p ackage: 16 mm 2 e xcellent s tate & s tep a ccuracy (0.05 d b )
12 - 2 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 v ariable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz input return loss (only major states are shown) normalized attenuation (only major states are shown) maximum gain vs. frequency output return loss (only major states are shown) -35 -30 -25 -20 -15 -10 -5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 normalized attenuation (db) frequency (ghz) 8 db 16 db 23 db -40 -35 -30 -25 -20 -15 -10 -5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 return loss (db) frequency (ghz) i.l maximum attenuation -30 -25 -20 -15 -10 -5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 return loss (db) frequency (ghz) i.l maximum attenuation 0 5 10 15 20 25 0 0.1 0.2 0.3 0.4 0.5 0.6 +25 c +85 c -40 c gain (db) frequency (ghz) bit error vs. frequency (only major states are shown) bit error vs. attenuation state -5 -4 -3 -2 -1 0 1 2 3 4 5 0 4 8 12 16 20 24 bit error (db) attenuation state (db) bit error < 1db, 400mhz and below bit error > 1db, 450mhz and above 600mhz 30mhz -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0.1 0.2 0.3 0.4 0.5 0.6 bit error (db) frequency (ghz) 1, 2, 4, 8, 16 db 23 db
12 - 3 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 variable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz output ip3 vs. temperature (+5 dbm output power per tone) output ip2 vs. temperature (+5 dbm output power per tone) relative phase vs. frequency (only major states are shown) 0 5 10 15 20 25 30 35 40 45 50 0 0.1 0.2 0.3 0.4 0.5 0.6 -40c +25c +85c ip3 (dbm) frequency (ghz) -40 -20 0 20 40 60 80 0 0.1 0.2 0.3 0.4 0.5 0.6 relative phase (deg) frequency (ghz) 16, 23 db 1, 2, 4 db 8 db noise figure vs. attenuation state 0 5 10 15 20 25 0 0.2 0.4 0.6 0.8 1 noise figure (db) frequency (ghz) 8db i.l. 4db 2db 1db output p1db vs. temperature step accuracy vs. frequency 0 5 10 15 20 25 30 35 40 0 0.1 0.2 0.3 0.4 0.5 0.6 -40c +25c +85c p1db (dbm) frequency (ghz) 0 20 40 60 80 100 0 0.1 0.2 0.3 0.4 0.5 0.6 -40c +25c +85c ip2 (dbm) frequency (ghz) -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0.1 0.2 0.3 0.4 0.5 0.6 step error (db) frequency (ghz) 1, 2, 4, 23 db 16 db 8 db
12 - 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 v ariable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz absolute maximum ratings rf i nput p ower 20 d b m rf output p ower 22 d b m d igital i nputs ( b 0- b 4 , l atch e nable) -0.5 to vdd +0.5v b ias voltage (vdd) 5.6 v channel t emperature 125 c continuous p diss ( t = 85 c) (derate 42 mw/ c above 85 c) 1.7 w t hermal r esistance (channel to ground paddle) 24 c/w s torage t emperature -65 to +150 c operating t emperature -40 to +85 c ele c tr o stati c sensiti v e de v ic e o bser v e h andling pre c a u ti o ns amp bias voltage vdd rf (v) i dd ( t yp.) (m a ) 5v 244 atten u ati o n (d b ) b 4 [1] b 3 [1] b 2 b 1 b 0 0 0 0 0 0 0 1 0 0 0 0 1 2 0 0 0 1 0 3 0 0 0 1 1 4 0 0 1 0 0 5 0 0 1 0 1 6 0 0 1 1 0 7 0 0 1 1 1 8 0 1 0 0 0 9 0 1 0 0 1 10 0 1 0 1 0 11 0 1 0 1 1 12 0 1 1 0 0 13 0 1 1 0 1 14 0 1 1 1 0 15 0 1 1 1 1 16 1 x 0 0 0 17 1 x 0 0 1 18 1 x 0 1 0 19 1 x 0 1 1 20 1 x 1 0 0 21 1 x 1 0 1 22 1 x 1 1 0 23 1 x 1 1 1 [1] e nabling b 4 disables b 3, the minimum attenuation is 16 d b truth table harmonics vs. frequency supply current vs. temperature -100 -80 -60 -40 -20 0 0 0.1 0.2 0.3 0.4 0.5 0.6 2nd harmonic 3rd harmonic harmonic (dbc) frequency (ghz) 200 220 240 260 280 4.5 5 5.5 -40c +25c +85c id (ma) voltage (v) control interface: t he gain of h m c680 lp 4( e ) is controlled by adjusting the state of the attenuator. t he attenuator has a 5-bit parallel c m o s / ttl compatible interface. s tate of the attenuator can be set with respect to the truth table above. power on sequence: t he ideal power up sequence is: gnd , vdd, d igital inputs, rf inputs. r elative order of the digital inputs is not important as long as they are powered after v dd / gnd . control voltage table s tate vdd = +3v vdd = +5v l ow 0 to 0.5v @ <1 a 0 to 0.8v @ <1 a high 2 to 3v @ <1 a 2 to 5v @ <1 a
12 - 5 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 variable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz p art n umber p ackage b ody m aterial l ead f inish msl r ating p ackage m arking [3] h m c680 lp 4 l ow s tress i njection m olded p lastic s n/ p b s older msl 1 [1] h680 xxxx h m c680 lp 4 e r oh s -compliant l ow s tress i njection m olded p lastic 100% matte s n msl 1 [2] h680 xxxx [1] m ax peak refow temperature of 235 c [2] m ax peak refow temperature of 260 c [3] 4- d igit lot number xxxx package information outline drawing n o tes : 1. leadframe material : co pper all oy 2. dimensi o ns are in in ch es [ millimeters ] 3. lead spa c ing to leran c e is n o n -cu m u lati v e . 4. pad b u rr lengt h s h all be 0.15mm ma x im u m . pad b u rr h eig h t s h all be 0.05mm ma x im u m . 5. pa ck age w arp s h all n ot e xc eed 0.05mm. 6. all gr ou nd leads and gr ou nd paddle m u st be s o ldered to p c b rf gr ou nd . 7. refer to h ittite appli c ati o n n o te f o r s u ggested land pattern .
12 - 6 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 v ariable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz pin descriptions p in n umber f unction d escription i nterface s chematic 1 ibias b ias current to amplifer. e xternal inductors required. 2, 5, 6, p ackage b ottom n /c, gnd t hese pins and package bottom must be connected to rf / d c ground. 3 iset e xternal bias resistor to adjust the current of the amplifer. 4, 18 vdd p ower s upply 9, 10, 11, 12, 13 b 4 - b 0 control inputs to digital attenuator. s ee t ruth t able & control voltage t able. 7, 8 rf ou tp , rf ou tn b alanced amplifer outputs. e xternal components required 20, 24 ampinn , ampinp b alanced a mplifer inputs. e xternal components required. 21, 23 fb 2, fb 1 f eedback capacitance for the amplifer. 22 le common mode emitter inductor. t he le p in requires high quality (less than 200mohms resistance) inductor to ground. a n inductance of 100nh is recommended. 14 rfin rf input to digital attenuator. d c blocking capacitor required. 15, 16, 17 f c3 - f c1 e xternal capacitors to ground are required. p lace these capacitors close to the package. 19 attn ou t rf output to digital attenuator. d c blocking capacitor required.
12 - 7 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 variable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz application circuit
12 - 8 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 v ariable gain amplifiers - digital - smt 12 hmc680lp4 / 680lp4e v03.0609 bicmos mmic 5-bit digital variable gain amplifier, 30 - 400 mhz 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 connected 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 hit - tite upon request. list of materials for evaluation pcb 115585 [1] i tem d escription j1 - j2 p c b m ount sma connector j3 12 p in d c connector c1 - c8, c11 - c14 1000 p f capacitor, 0402 p kg. c9 100 p f capacitor, 0402 p kg. c10 10k p f capacitor, 0402 p kg. c15 4.7 f t antalum capacitor, case a s ize l 1, l 2 680 nh i nductor, 0805 p kg. l 3, l 4 330 nh i nductor, 0603 p kg. l 5 100 nh i nductor, 0603 p kg. r 1 680 ohm r esistor, 0603 p kg. r 2 - r 6 39 kohm r esistor, 0402 p kg. r 7, r 8 0 ohm r esistor, 0402 p kg. t 1, t 2 1:1 rf t ransformer, ma /co m smt b alun ( et c1-1-13) u1 h m c680 lp 4( e ) variable g ain a mplifer p c b [2] 115584 e valuation p c b [1] r eference this number when ordering complete evaluation p c b [2] circuit b oard m aterial: a rlon 25 fr or r ogers 4350
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