attenuators - digital - smt 1 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz functional diagram electrical specifcations, t a = +25 c, vctl = 0/+vdd the HMC792ALP4E is a broadband 6-bit gaas ic digital attenuator in a low cost leadless smt package. this versatile digital attenuator incorporates off-chip ac ground capacitors for near dc operation, making it suitable for a wide variety of rf and if applications. the dual mode control interface is cmos/ttl com- patible, and accepts either a three wire serial input or a 6 bit parallel word. the HMC792ALP4E also features a user selectable power up state and a serial output port for cascading other hittite serial controlled components. the HMC792ALP4E is housed in a rohs compliant 4x4 mm qfn leadless package, and requires no external matching components. parameter frequency (ghz) min. typ. max. min. typ. max. units vdd = +3v vdd = +5v insertion loss dc - 3.0 ghz 3.0 - 6.0 ghz 1.8 2.3 2.4 4.0 1.8 2.3 2.4 4.0 db db attenuation range dc - 6.0 ghz 15.75 15.75 db return loss (rf1, rf2, all atten. states) dc - 6.0 ghz 18 18 db attenuation accuracy: (referenced to insertion loss) all attenuation states dc - 6.0 ghz (0.2 + 3% of atten. setting) max. db db db db input power for 0.1 db compression 0.05 - 0.15 ghz 0.15 - 6.0 ghz 22 27 22 31 dbm dbm input third order intercept point (two-tone input power= 10 dbm each tone) dc - 6.0 ghz 53 53 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 6.0 ghz 110 150 110 150 ns ns supply current dc - 6.0 ghz 2.1 2.2 ma typical applications features general description the HMC792ALP4E is ideal for: ? cellular/3g infrastructure ? wibro / wimax / 4g ? microwave radio & vsat ? test equipment and sensors ? if & rf applications 0.25 db lsb steps to 15.75 db power-up state selection high input ip3: +53 dbm low insertion loss: 1.8 db @ 2.0 ghz ttl/cmos compatible, serial, parallel or latched parallel control 0.1 db typical step error single +3v or +5v supply 24 lead 4x4mm smt package: 16mm 2 for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 2 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz 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 blocks on rf ports, vdd = 5v [2] data taken with acg capacitors, c4, c5 & c6 removed. see application circuit and note. bit error vs. attenuation state bit error vs. attenuation state [2] -5 -4 -3 -2 -1 0 0123456 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0123456 return loss (db) frequency (ghz) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 4 8 12 16 100 mhz 1 ghz 2 ghz 4 ghz 6 ghz bit error (db) attenuation state (db) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 4 8 12 16 900 mhz 2 ghz 4 ghz 6 ghz bit error (db) attenuation state (db) -20 -15 -10 -5 0 012345678 normalized attenuation (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0123456 return loss (db) frequency (ghz) for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 3 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz worst case step error between successive attenuation states (only major states are shown) input ip3 at -40 o c (major bit states at each frequency is shown) -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0123456 0.25 db 0.5 db 1 db 2 db 4 db 8 db 15.75 db step error (db) frequency (ghz) 30 35 40 45 50 55 60 65 70 0123456 0 db 0.25 db 0.5 db 1 db 4 db 2 db 8 db 15.75 db ip3 (dbm) frequency (ghz) bit error vs. frequency [2] (only major states are shown) bit error vs. frequency (only major states are shown) -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0123456 0.25 db 0.5 db 1 db 2 db 4 db 8 db 15.75 db bit error (db) frequency (ghz) -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0123456 0.25 db 0.5 db 1 db 2 db 4 db 8 db 15.75 db bit error (db) frequency (ghz) [2] data taken with acg capacitors, c4, c5 & c6 removed. see application circuit and note. input ip3 at 25 o c (major bit states at each frequency is shown) input ip3 at 85 o c (major bit states at each frequency is shown) 30 35 40 45 50 55 60 65 70 0123456 0 db 0.25 db 0.5 db 1 db 4 db 2 db 8 db 15.75 db ip3 (dbm) frequency (ghz) 30 35 40 45 50 55 60 65 70 0123456 0 db 0.25 db 0.5 db 1 db 4 db 2 db 8 db 15.75 db ip3 (dbm) frequency (ghz) for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 4 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz input power for 0.1db compression @ vdd = 5v (detail of low frequency roll-off) input power for 0.1db compression @ vdd = 3v (detail of low frequency roll-off) 20 22 24 26 28 30 32 34 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 p0.1db (dbm) frequency (ghz) 20 22 24 26 28 30 32 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 p0.1db (dbm) frequency (ghz) serial control interface the HMC792ALP4E contains a 3-wire spi compatible digital interface (serin, clk, le). the serial control interface is activated when p/s is kept high. the 6-bit serial word must be loaded msb frst. the 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 attenuation state will stay constant while le is kept low. for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 5 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz pup truth table power-up states control voltage input reference insertion loss d5 d4 d3 d2 d1 d0 high high high high high high 0 db high high high high high low -0.25 db high high high high low high -0.5 db high high high low high high -1 db high high low high high high -2 db high low high high high high -4 db low high high high high high -8 db low low low low low low -15.75 db any combination of the above states will provide an attenuation equal to the sum of the bits selected. truth table control voltage table timing diagram (latched parallel mode) parallel mode (direct parallel mode & latched parallel mode) note: the parallel mode is enabled when p/s is set to low. direct parallel mode - the attenuation state is changed by the control voltage inputs d0-d5 directly. the le (latch enable) must be at a logic high at all times to control the attenuator in this manner. latched parallel mode - the 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 le is pulsed. see timing diagram above for reference. le pup1 pup2 relative attenuation 0 0 0 -15.75 0 1 0 -12 0 0 1 -8 0 1 1 insertion loss 1 x x 0 to -15.75 db note: the logic state of d0 - d5 determines the power-up state per truth table shown below when le is high at power-up. if le is set to logic low at power-up, the logic state of pup1 and pup2 determines the power-up state of the part per pup truth table. if the le 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. the attenuator latches in the desired power-up state approximately 200 ms after power-up. power-on sequence the ideal power-up sequence is: gnd, vdd, digital inputs, rf inputs. the relative order of the digital inputs are not important as long as they are powered after vdd / gnd parameter typ. min. serial period, t sck 100 ns control set-up time, t cs 20 ns control hold-time, t ch 20 ns le setup-time, t ln 10 ns min. le pulse width, t lew 10 ns min le pulse spacing, t les 630 ns serial clock hold-time from le, t ckn 10 ns hold time, t ph. 0 ns latch enable minimum width, t len 10 ns setup time, t ps 2 ns state 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, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 6 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz absolute maximum ratings rf input power (dc - 6 ghz) +29 dbm digital inputs ( d0 to d5, p/s, clk, serin, le, pup1, pup2 ) -0.5 to vdd +0.5 bias voltage (vdd) 5.6v channel temperature 150 c continuous pdiss (t = 85 c) (derate 9.9 mw/ c above 85 c) [1] 0.715 w thermal resistance (channel to package bottom) 90.9 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c electrostatic sensitive device observe handling precautions outline drawing notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 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 ground leads and ground paddle must be soldered to pcb rf ground. 7. refer to hittite application note for suggested land pat tern. part number package body material lead finish msl rating package marking [1] HMC792ALP4E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h792a xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 7 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz pin number function description interface schematic 1 p/s see truth table, control voltage table and timing diagram. 2 clk 3 serin 4 le 5, 14 gnd these pins and package bottom must be connected to rf/dc ground. 6, 13 rf1, rf2 these pins are dc coupled and matched to 50 ohms. blocking capacitors are required. select value based on lowest frequency of operation. 7 - 12 acg1 - acg6 external capacitors to ground is required. select value for lowest frequency of operation. place capacitor as close to pins as possible. 15 serout serial input data delayed by 6 clock cycles. 16, 17 19 - 24 pup2, pup1 d5, d4, d3, d2, d1, d0 see truth table, control voltage table and timing diagram. 18 vdd supply voltage pin descriptions for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 8 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz application circuit for frequencies less than 700 mhz, the use of acg capacitors c4, c5 and c6 is recommended. for frequencies greater than 700 mhz, the HMC792ALP4E has similar performance with and without the acg capacitors. for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 9 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz evaluation pcb the circuit board used in the fnal application should use rf circuit design techniques. signal 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. the evaluation circuit board shown is available from hittite upon request. list of materials for evaluation pcb ev1hmc792alp4 [1] item description j1, j2 pcb mount sma connector j3 18 pin dc connector j4, j5 dc pin c1, c2 100 pf capacitor, 0402 pkg. c3 1000 pf capacitor, 0402 pkg. c4 - c6 330 pf capacitor, 0402 pkg. u1 HMC792ALP4E digital attenuator pcb [2] 118852 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
attenuators - digital - smt 10 HMC792ALP4E v00.0613 0.25 lsb gaas mmic 6-bit digital attenuator, dc - 6 ghz notes: for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, 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 information furn is hed by an al og devices is believed to be a cc urate and re lia bl e. however, no responsibility is assumed by an al og devices for its u se, no r for any infring emen ts of pat en ts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. for price, delivery, and to place o rd ers: an al og devices, inc., one techn ol ogy way, p.o. box 9106, norwood, ma 02062-9106 phone: 781-329-4700 o rd er online at ww w.an alog .com app li cation sup po rt: p ho ne: 1-800-analog-d
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