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 attenu a tors - digi t al - s m t 8 8 - 1 HMC624LFLP4E 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz v00.0511 functional diagram electrical specifcations, t a = +25 c, 50 ohm system, with vdd = +5v & vctl = 0/+5v (unless otherwise noted) t he hmc624lflp4 e is a 6-bit gaas ic digital attenuator in a low cost leadless s m t package. t his versatile digital attenuator is suitable for a wide variety of if applications. t he dual mode control interface is cm os / tt l compatible, and accepts either a three wire serial input or a 6 bit parallel word. t he hmc624lflp4 e also features a user selectable power up state and a serial output port for cascading other hittite serial controlled components. t he hmc624lflp4 e is housed in a r oh s compliant 4x4 mm qf n leadless package, and requires no external matching components. parameter frequency (mhz) min. t yp. max. u nits insertion loss 60 - 500 mhz 1.2 1.8 db attenuation r ange 60 - 500 mhz 31.5 db r eturn loss (a tt i n , a ttout , all atten. s tates) 60 - 500 mhz 20 db attenuation accuracy: ( r eferenced to insertion loss) all attenuation s tates 60 - 300 mhz 300 - 400 mhz 400 - 500 mhz (0.20 + 1% of atten. s etting) max (0.20 + 2% of atten. s etting) max (0.20 + 2.5% of atten. s etting) max db db db input power for 0.1 db compression 60 - 100 mhz 100 - 500 mhz 30 32 dbm input t hird o rder intercept point ( t wo- t one input power = 10 dbm e ach t one) 60 - 100 mhz 100 - 500 mhz 50 55 dbm s witching s peed t r ise, tfall (10 / 90% r f) r on , t o ff (50% l e to 10 / 90% r f) 60 - 500 mhz 30 60 ns ns typical applications features general description t he hmc624lflp4 e is ideal for: ? cellular/3g infrastructure ? repeaters & access points ? wibro / wimax / 4g ? microwave radio & vsat ? test equipment and sensors ? if applications 0.5 db l s b s teps to 31.5 db power- u p s tate s election high input ip3: +55 dbm low insertion loss: 1.2 db tt l/cm os compatible, s erial, parallel or latched parallel control <0.1 db t ypical s tep e rror @ 300 mhz single +3v or +5v supply 24 lead 4x4mm s m t package: 16mm 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 attenu a tors - digi t al - s m t 8 8 - 2 output return loss (only major states are shown) input return loss (only major states are shown) normalized attenuation (only major states are shown) -35 -30 -25 -20 -15 -10 -5 0 50 150 250 350 450 550 normalized attenuation (db) frequency (mhz) insertion loss vs. temperature -2 -1.5 -1 -0.5 0 50 150 250 350 450 550 +25 c +85 c -40 c insertion loss (db) frequency (mhz) -50 -40 -30 -20 -10 0 50 150 250 350 450 550 return loss (db) frequency (mhz) -50 -40 -30 -20 -10 0 50 150 250 350 450 550 return loss (db) frequency (mhz) bit error vs. frequency (only major states are shown) bit error vs. attenuation state -1 -0.5 0 0.5 1 50 150 250 350 450 550 bit error (db) frequency (mhz) 31.5 db 16 db -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 4 8 12 16 20 24 28 32 60 mhz 100 mhz 200 mhz 300 mhz 400 mhz 500 mhz bit error (db) attenuation state (db) HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz
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 attenu a tors - digi t al - s m t 8 8 - 3 step attn vs. attn state, 60 - 300 mhz ip3 @ major attenuation states 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 4 8 12 16 20 24 28 32 60 mhz 100 mhz 200 mhz 300 mhz step attenuation (db) attenuation state (db) 30 40 50 60 70 50 150 250 350 450 550 ip3 (dbm) frequency (mhz) step attn vs. attn state, 400-500 mhz p0.1db vs. temperature 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 4 8 12 16 20 24 28 32 400 mhz 500 mhz step attenuation (db) attenuation state (db) 20 25 30 35 40 50 150 250 350 450 550 +25 c +85 c -40 c p0.1db (dbm) frequency (mhz) HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz serial control interface t he hmc624lflp4 e contains a 3-wire s pi compatible digital interface ( ser i n , clk, l e ). t he serial control interface is activated when p/ s is kept high. t he 6-bit serial word must be loaded m s b frst. t he positive-edge sensitive clk and le requires clean transitions. if mechanical switches are used, sufficient debouncing should be provided. when le is high, 6-bit data in the serial input register is transferred to the attenuator. when le is high clk is masked to prevent data transition during output loading. when p/s is low, 3-wire spi interface inputs (serin, clk, le) are disabled and the input register is loaded with parallel digital inputs (d0-d5). when le is high, 6-bit parallel data changes the state of the part per truth table. for all modes of operations, the state will stay constant while l e is kept low.
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 attenu a tors - digi t al - s m t 8 8 - 4 HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz bias voltage table vdd (v) idd ( t yp.) (ma) 3 0.12 5 0.15 pup truth table power-up states control voltage input r eference insertion loss d5 d4 d3 d2 d1 d0 high high high high high high 0 db high high high high high low -0.5 db high high high high low high -1 db high high high low high high -2 db high high low high high high -4 db high low high high high high -8 db low high high high high high -16 db low low low low low low -31.5 db any combination of the above states will provide an attenuation equal to the sum of the bits selected. truth table timing diagram (latched parallel mode) parallel mode (direct parallel mode & latched parallel mode) note: t he parallel mode is enabled when p/ s is set to low. direct parallel mode - t he attenuation state is changed by the control voltage inputs d0-d5 directly. t he l e (latch e nable) must be at a logic high at all times to control the attenuator in this manner. latched parallel mode - t he attenuation state is selected using the control voltage inputs d0-d5 and set while the le is in the low state. the attenuator will not change state while le is low. once all control voltage inputs are at the desired states the l e is pulsed. s ee timing diagram above for reference. l e pu p1 pu p2 r elative attenuation 0 0 0 -31.5 0 1 0 -24 0 0 1 -16 0 1 1 insertion loss 1 x x 0 to -31.5 db n ote: t he logic state of d0 - d5 determines the power- up state per truth table shown below when l e is high at power-up. if le is set to logic low at power-up, the logic state of p u p1 and p u p2 determines the power-up state of the part per p u p truth table. if the l e is set to logic high at power-up, the logic state of d0-d5 determines the power-up state of the part per truth table. t he attenu - ator latches in the desired power-up state approxi - mately 200 ms after power-up. power-on sequence the ideal power-up sequence is: gnd, vdd, digital inputs, r f inputs. t he relative order of the digital inputs are not important as long as they are powered after vdd / gnd parameter t yp. min. serial period, t s ck 100 ns control set-up time, t c s 20 ns control hold-time, t ch 20 ns l e setup-time, t l n 10 ns min. l e pulse width, t lew 10 ns min l e pulse spacing, t l es 630 ns s erial clock hold-time from l e , t ck n 10 ns hold t ime, t ph. 0 ns latch enable minimum width, t l en 10 ns s etup t ime, t p s 2 ns control voltage table s tate vdd = +3v vdd = +5v low 0 to 0.5v @ <1 a 0 to 0.8v @ <1 a high 2 to 3v @ <1 a 2 to 5v @ <1 a
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 attenu a tors - digi t al - s m t 8 8 - 5 absolute maximum ratings r f input power (60-500 mhz) 28 dbm ( t = +85 c) digital inputs (p/ s , clk, ser i n , l e , pu p1, p u p2, d0-d5) -0.5 to vdd +0.5v bias voltage (vdd) 5.6v channel t emperature 150 c continuous pdiss ( t = 85 c) (derate 9.8 mw/ c above 85 c) 0.635 w t hermal r esistance 102 c/w s torage t emperature -65 to +150 c o perating t emperature -40 to +85 c es d s ensitivity (hbm) class 1b electrostatic sensitive device observe handling precautions outline drawing notes : 1. l e adf r am e ma ter ial: c o pp er all o y 2. dim ens i ons a re i n i n ch es [millim eters ] 3. lead spacing tolerance is non-cumulative. 4. pad burr length shall be 0.15mm maximum. pad burr height shall be 0.05mm maximum. 5. package warp shall not exceed 0.05mm. 6. all g roun d l e ad s a n d g roun d paddl e m ust b e so ld ere d to pcb r f g roun d. 7. re f er to hi tt i te applica t i on note f or su gg este d la n d pa ttern . part n umber package body material lead finish m s l r ating package marking [1] hmc624lflp4 e r oh s -compliant low s tress injection molded plastic 100% matte s n m s l1 [2] h624lf xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz
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 attenu a tors - digi t al - s m t 8 8 - 6 HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz pin n umber function description interface s chematic 1 p/ s s ee truth table, control voltage table and timing diagram. 2 clk 3 ser i n 4 l e 5, 14 g n d t hese pins and package bottom must be connected to r f/dc ground. 6, 13 a tt i n , a ttout t hese pins are dc coupled and matched to 50 o hms. blocking capacitors are required. s elect value based on lowest frequency of operation. 7 - 12 acg1 - acg6 e xternal capacitors to ground are required. s elect values for lowest frequency of operation. place capacitors as close to pins as possible. 15 serout s erial input data delayed by 6 clock cycles. 16, 17 19 - 24 pu p2, p u p1 d5, d4, d3, d2, d1, d0 s ee truth table, control voltage table and timing diagram. 18 vdd s upply voltage 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 attenu a tors - digi t al - s m t 8 8 - 7 application circuit HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz -35 -30 -25 -20 -15 -10 -5 0 0.1 1 10 100 1000 normalized attenuation (db) frequency (mhz) 0 10 20 30 40 0.1 1 10 100 1000 +25 c +85 c -40 c p0.1db (dbm) frequency (mhz) normalized attenuation wideband performance p0.1db vs. temperature wideband performance n ote: t he capacitor value for c1-c6 shown in the stan - dard application circuit as 0.1 uf will result in excellent wideband small signal performance from 200 khz to 500 mhz. s mall signal operation to frequencies lower than 200 khz is possible through the proper selection of capacitors c1-c6. contact hittite applications group for proper selection of c1-c6 values for frequencies lower than 200 khz. n ote: t he 0.1 db input compression point degrades for low frequency operation. t ypical 0.1 db input compres - sion point at 60 mhz is +27 dbm tapering to +5 dbm at 250 khz. t he typical 0.1 db compression point holds constant at +5 dbm for frequencies lower than 250 khz. hittite recommends that absolute maximum input power levels be maintained to less than the 0.1 db compression point for reliable operation of the hmc624lflp4 e .
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 attenu a tors - digi t al - s m t 8 8 - 8 HMC624LFLP4E v00.0511 0.5 db lsb gaas mmic 6-bit digital attenuator, 60 - 500 mhz evaluation pcb t he circuit board used in the application should use r f circuit design techniques. s ignal lines should have 50 o hm 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 eval01-HMC624LFLP4E [1] item description j1, j2 pcb mount s ma connector j3 18 pin dc connector j8, j11 dc pin c1 - c6 0.1 uf capacitor, 0402 pkg. c7 - c8 1000 pf capacitor, 0402 pkg. r 1 - r 14 100 k o hm r esistor, 0402 pkg. sw1, sw2 s pd t 4 position dip s witch u 1 hmc624lflp4 e digital attenuator pcb [2] 117210 e valuation pcb [1] r eference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25f r
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