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 hmc759lp3e 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz v00.0909 functional diagram electrical specifcations t a = +25 c, 50 system, with vdd1 = vdd2 = +5v & vctl = 0/+5v t he hmc759lp3 e is a 7-bit bicm os digital attenuator in a low cost leadless s m t package. t his versatile digital attenuator incorporates off-chip ac ground capacitors for near dc operation, making it suitable for a wide variety of r f and if applications. t he control interface is cm os / tt l compatible and accepts a three wire serial input. t he hmc759lp3 e features user selectable power up states and a serial output port for cascading other hittite serial controlled components. t he hmc759lp3 e is housed in a r oh s compliant 3x3 mm qfn leadless package, and occupies only 9 mm 2 . parameter frequency (mhz) min. t yp. max. u nits insertion loss 10 - 300 3.3 4.5 db attenuation r ange 10 - 300 31.75 db r eturn loss ( r f1, r f2, all atten. s tates) 10 - 300 10 db attenuation accuracy: ( r eferenced to insertion loss) all attenuation s tates 10 - 300 (0.05 + 1.5% of atten. s ettling) max. db input power for 1 db compression 10 - 50 50 - 300 20 21 dbm dbm input t hird o rder intercept point ( t wo- t one input power = 0 dbm e ach t one) 10 - 50 50 - 300 39 >40 dbm dbm bias current (idd1 + idd2) 10 - 300 300 650 1000 a s witching t ime (50% l e to 90% r f) 10 - 300 15 ns typical applications features general description t he hmc759lp3 e is ideal for: ? cellular/3g infrastructure ? wibro / wimax / 4g ? microwave r adio & v s a t ? t est e quipment and s ensors ? if & r f applications 0.25 db l s b s teps to 31.75 db power- u p s tate s election high input ip3: +40 dbm tt l/cm os compatible, s erial control e xcellent s tate & s tep accuracy 0.25 db s ingle +5v s upply 16 lead 3x3mm s m t package: 9mm 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 [1] (only major states are shown) input return loss [1] (only major states are shown) normalized attenuation [1] (only major states are shown) insertion loss vs. temperature [1] [1] data taken with broadband dc blocking on r f input and output ports. [2] c1, c2 = 10nf bit error vs. frequency [2] (only major states are shown) bit error vs. attenuation state [2] hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz -5 -4 -3 -2 -1 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 +25c +85c -40c frequency (ghz) insertion loss (db) -35 -30 -25 -20 -15 -10 -5 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) return loss (db) 31.75 db 16 db 8 db 4 db -0.5 -0.25 0 0.25 0.5 0 4 8 12 16 20 24 28 32 attenuation state (db) bit error (db) 10 mhz 200 mhz 300 mhz -35 -30 -25 -20 -15 -10 -5 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) normalized attenuation (db) 31.75 db 16 db 8 db 4 db -20 -15 -10 -5 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) return loss (db) 31.75 db 0 db -0.5 -0.25 0 0.25 0.5 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) bit error (db) 31.75 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 attenu a tors - digi t al - s m t 8 8 - 3 worst case step error between successive attenuation states [1] ip3 vs. attenuation states [1] (only major states are shown) input p1db vs. attenuation states [1][2] (only major states are shown) hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz serial control interface t he hmc759lp3 e contains a 3-wire s pi compatible digital interface ( ser i n , clk, l e ). t he 7-bit serial word must be loaded m s b frst. t he positive-edge sensitive clk and l e requires clean transitions. if mechanical switches are used, sufficient debouncing should be provided. when l e is high, 7-bit data in the serial input register is transferred to the attenuator. when l e is high, clk is masked to prevent data transition during output loading. -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) step error (db) 31.75 db 25 30 35 40 45 50 55 60 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) ip3 (dbm) 31.75 db 16 db 8 db 0 db 16 18 20 22 24 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 frequency (ghz) p1db (dbm) 4 db 8 db 16 db [1] c1, c2 = 10nf [2] part does not enter 1 db compression at 31.75 db max attenuation up to 25 dbm input power.
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 hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz bias voltage vdd (v) idd ( t yp.) (a) 4.5 580 5.0 650 5.5 710 pup truth table truth table power-up states l e pu p1 pu p2 r elative attenuation 0 0 0 -31.75 0 1 0 -24 0 0 1 -16 0 1 1 insertion loss 1 x x indeterminate if l e is set to logic l o w 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 kept high at power up, power up state will be indeterminate therefore is not recommended. power-on sequence t he ideal power-up sequence is: g n d, 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 / g n d 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 l e w 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 control voltage table s tate vdd = +5v low 0 to 0.8v @ <1 a high 2 to 5v @ <1 a control voltage input r eference insertion loss (db) d6 d5 d4 d3 d2 d1 d0 high high high high high high high 0 high high high high high high low 0.25 high high high high high low high 0.5 high high high high low high high 1 high high high low high high high 2 high high low high high high high 4 high low high high high high high 8 low high high high high high high 16 low low low low low low low 31.75 any combination of the above states will provide an attenuation equal to the sum of the bits selected.
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 ( r f1, r f2) 20 dbm ( t = +85 c) digital inputs ( ser i n l e , clk, p u p1, p u p2) -0.5 to vdd +0.5v bias voltage (vdd) 5.6v channel t emperature 125 c continuous pdiss ( t = 85 c) (derate 9.8 mw/ c above 85 c) 0.29 w t hermal r esistance (channel to ground paddle) 138 c/w s torage t emperature -65 to +150 c o perating t emperature -40 to +85 c es d s ensitivity (hbm) class 1a e l e c trost a t ic sens i t iv e de vic e o b ser v e ha n dli n g p re ca ut i ons 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. l e ad s paci n g to l er a n c e i s non -c u m u la t iv e . 4. pad b urr l en g t h s hall b e 0.15mm maxim u m. pad b urr h e igh t s hall b e 0.05mm maxim u m. 5. packag e wa r p s hall not e xc ee d 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] hmc759lp3 e r oh s -compliant low s tress injection molded plastic 100% matte s n m s l1 [2] 759 xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 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 hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz pin n umber function description interface s chematic 1 vdd1 t his pin should be pulled high to vdd through a 39 k resistor. 2 ser i n s ee t ruth t able, control voltage t able and t iming diagram. 3 l e 4 clk 5 pu p1 6 pu p2 7 serout s erial input data delayed by 7 clock cycles. 8, 13 r f1, r f2 t his pin is dc coupled and matched to 50 o hms. blocking capacitors are required. 9 - 12 acg0 - 3 e xternal capacitors to ground are required. place these capacitors close to the package. 14 g n d t his pin and package bottom must be connected to r f/dc ground. 15 vdd2 s upply voltage. 16 n /c t his pin is not connected internally; however, all data shown herein was measured with this pin connected to r f/dc ground externally. 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 hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 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 - 8 hmc759lp3e v00.0909 0.25 db lsb bicmos mmic 7-bit digital attenuator, 10 - 300 mhz evaluation pcb t he circuit board used in the fnal 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 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 hittite upon request. list of materials for evaluation pcb 125228 [1] item description j1, j2 pcb mount s ma connector j3 18 pin dc connector j4, j5 dc pin c1 - c6 10 nf capacitor, 0402 pkg. c7, c8 100 pf capacitor, 0402 pkg. c9 1 nf capacitor, 0402 pkg. c10 4.7 f capacitor, 0805 pkg. r 1 - r 4 39k o hm r esistor, 0402 pkg. u 1 hmc759lp3 e digital attenuator pcb [2] 125226 e valuation pcb [1] r eference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25f r or r ogers 4350
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