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12 - 34 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 hmc628lp4 / 628lp4e v07.0410 functional diagram electrical specifi cations, t a = +25 c, 50 ohm system, vdd= +5v the hmc628lp4(e) is ideal for: ? cellular/3g infrastructure ? wibro / wimax / 4g ? microwave radio & vsat ? test equipment and sensors ? if & rf applications ttl/cmos compatible serial, parallel or latched parallel control interface high output ip3: +35 dbm (at all gain settings) wide gain control range: 23 db power-up state selection 24 lead 4x4 mm smt package: 16 mm 2 excellent state & step accuracy (0.05 db) the hmc628lp4(e) is a digitally controlled variable gain amplifi er which operates from 50 to 800 mhz, and can be programmed to provide anywhere from 8 db attenuation, to 15 db of gain, in 1.0 db steps. the hmc628lp4(e) delivers noise fi gure of 5 db in its maximum gain state, with output ip3 of up to +35 dbm in any state. the dual mode control interface is cmos/ ttl compatible, and accepts either a three wire serial input or a 5 bit parallel word. the hmc628lp4(e) also features a user selectable power up state and a serial output port for cascading other hittite serial controlled components. the hmc628lp4(e) is housed in a rohs compliant 4x4 mm qfn leadless package, and is available in three evaluation board confi gurations, depending on the application frequency. parameter 50 - 250 250 - 500 500 - 800 mhz min. typ. max. min. typ. max. min. typ. max. units gain (maximum gain state) 13 15 12.8 14 10.5 13 db gain control range 23 23 23 db input return loss 12 10 10 db output return loss 10 12.5 9 db gain accuracy: (referenced to maximum gain state) (0.1 + 1% of gain setting )max (0.4 + 2% of gain setting )max (0.4 + 4% of gain setting )max db output power for 1db compression 19 19.5 16 18 14 18 dbm output third order intercept point 35 [1] 33 [2] 32 [3] dbm output second order intercept point 46 [1] 54 [2] 55 [3] dbm harmonics 2nd 3rd 46 69 55 75 62 83 dbc dbc switching characteristics trise, tfall (10 / 90% rf) 11 18 ns ns ton, toff ( latch enable to 10 / 90% rf) noise figure 5 6 6.5 db supply current (idd) 6585 6585 6585ma [1] two-tone output power @ 5 dbm [2] two-tone output power @ 2 dbm [3] two-tone output power @ 0 dbm typical applications features general description bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz
12 - 35 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 50 to 250 mhz tuning 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) hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz -25 -20 -15 -10 -5 0 5 10 15 20 25 0.05 0.1 0.15 0.2 0.25 +25 c +85 c -40 c gain (db) frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0.05 0.1 0.15 0.2 0.25 normalized attenuation (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.05 0.1 0.15 0.2 0.25 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.05 0.1 0.15 0.2 0.25 return loss (db) frequency (ghz) output ip3 vs. frequency 15 20 25 30 35 40 45 0.05 0.1 0.15 0.2 0.25 ip3 (dbm) frequency (mhz) output ip2 vs. frequency 30 35 40 45 50 55 60 0.05 0.1 0.15 0.2 0.25 ip3 (dbm) frequency (mhz)
12 - 36 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 step error vs. frequency (only major states are shown) normal relative phase vs. frequency (only major states are shown) hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0.05 0.1 0.15 0.2 0.25 step error (db) frequency (ghz) -30 -15 0 15 30 0.05 0.1 0.15 0.2 0.25 relative phase (deg) frequency (ghz) 1 - 23 db bit error vs. frequency (only major states are shown) bit error vs. attenuation state -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 bit error (db) attenuation state (db) (50, 100, 150, 200, 250) mhz -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0.05 0.1 0.15 0.2 0.25 bit error (db) frequency (ghz) 50 to 250 mhz tuning noise figure vs. frequency 0 1 2 3 4 5 6 7 8 9 10 0.05 0.1 0.15 0.2 0.25 noise figure (db) frequency (ghz) output ip3 vs. attenuation @ 150 mhz 15 20 25 30 35 40 45 0 5 10 15 20 25 ip3 (dbm) attenuation (db)
12 - 37 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 hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 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) 250 to 500 mhz tuning -25 -20 -15 -10 -5 0 5 10 15 20 25 0.2 0.3 0.4 0.5 0.6 +25 c +85 c -40 c gain (db) frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0.2 0.3 0.4 0.5 0.6 normalized attenuation (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.2 0.3 0.4 0.5 0.6 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.2 0.3 0.4 0.5 0.6 return loss (db) frequency (ghz) output ip3 vs. frequency 15 20 25 30 35 40 45 0.25 0.3 0.35 0.4 0.45 0.5 ip3 (dbm) frequency (mhz) output ip2 vs. frequency 20 30 40 50 60 70 80 0.25 0.3 0.35 0.4 0.45 0.5 ip2 (dbm) frequency (mhz)
12 - 38 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 step error vs. frequency (only major states are shown) normal relative phase vs. frequency (only major states are shown) bit error vs. frequency (only major states are shown) bit error vs. attenuation state hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz 250 to 500 mhz tuning -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0.2 0.3 0.4 0.5 0.6 bit error (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 20 24 bit error (db) attenuation state (db) (250, 300, 350, 400, 450, 500) mhz -40 -20 0 20 40 60 80 0.2 0.3 0.4 0.5 0.6 relative phase (deg) frequency (ghz) 23 db 16 db 8 db 1 - 4 db -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0.2 0.3 0.4 0.5 0.6 step error (db) frequency (ghz) noise figure vs. frequency 0 1 2 3 4 5 6 7 8 9 10 0.2 0.3 0.4 0.5 0.6 noise figure (db) frequency (ghz) output ip3 vs. attenuation @ 350 mhz 15 20 25 30 35 40 45 0 5 10 15 20 25 ip3 (dbm) attenuation (db)
12 - 39 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 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) hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz 500 to 800 mhz tuning -25 -20 -15 -10 -5 0 5 10 15 20 25 0.4 0.5 0.6 0.7 0.8 0.9 +25 c +85 c -40 c gain (db) frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0.4 0.5 0.6 0.7 0.8 0.9 relative phase (deg) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.4 0.5 0.6 0.7 0.8 0.9 return loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0.4 0.5 0.6 0.7 0.8 0.9 return loss (db) frequency (ghz) output ip3 vs. frequency 15 20 25 30 35 40 45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 ip3 (dbm) frequency (mhz) output ip2 vs. frequency 20 30 40 50 60 70 80 0.5 0.55 0.6 0.65 0.7 0.75 0.8 ip2 (dbm) frequency (mhz)
12 - 40 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 step error vs. frequency (only major states are shown) normal relative phase vs. frequency (only major states are shown) bit error vs. frequency (only major states are shown) bit error vs. attenuation state hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz 500 to 800 mhz tuning -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0.4 0.5 0.6 0.7 0.8 0.9 bit error (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 20 24 bit error (db) attenuation state (db) 800 mhz 700 mhz -35 -30 -25 -20 -15 -10 -5 0 0.4 0.5 0.6 0.7 0.8 0.9 relative phase (deg) frequency (ghz) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0.4 0.5 0.6 0.7 0.8 0.9 step error (db) frequency (ghz) 16 db 23 db noise figure vs. frequency 0 1 2 3 4 5 6 7 8 9 10 0.4 0.5 0.6 0.7 0.8 noise figure (db) frequency (ghz) output ip3 vs. attenuation @ 650 mhz 15 20 25 30 35 40 45 0 5 10 15 20 25 ip3 (dbm) attenuation (db)
12 - 41 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 serial control interface parallel mode (direct parallel mode & latched parallel mode) the hmc628lp4(e) contains a 3-wire spi compatible digital interface (data, clk, le). it is activated when p/s is kept high. the 5-bit serial word must be loaded msb fi rst. the positive-edge sensitive clk and le requires clean transitions. standard logic families work well. if mechanical switches were used, sufficient debouncing should be provided. when le is high, 5-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 (data, clk, le) are disabled and serial input register is loaded asynchronously with parallel digital inputs (b0-b4). when le is high, 5-bit parallel data is transferred to the attenuator. for all modes of operations, attenuation state will stay constant while le is kept low. 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 directly. the le (latch enable) must be at a logic high to control the attenuator in this manner. latched parallel mode - the attenuation state is selected using the control voltage inputs 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. timing diagram (latched parallel mode) hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz 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 set up-time, t ln 10 ns min. le pulse width, t lew 10 ns min le pulse spacing, t les 530 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
12 - 42 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 absolute maximum ratings rf input power 20 dbm rf output power 22 dbm digital inputs (b0-b4, shift clock, latch enable & data input) -0.5v to vdd +0.5v bias voltage (vdd) 5.6 v junction temperature 125 c continuous pdiss (t = 85 c) (derate 13.5 mw/c above 85 c) [1] 0.54 w thermal resistance (junction to ground paddle) 74.3 c/ w storage temperature -65 to +150 c operating temperature -40 to +85 c electrostatic sensitive device observe handling precautions bias voltage vdd (v) idd (typ.) (ma) 5v 65 pup truth table le pup1 pup2 gain relative to maximum gain 000insertion loss 010 -8 001 -16 011 -23 1 x x 0 to -23 db note: power-up with le= 1 provides direct parallel operation with b4-b0. power-up states 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 b4-b0 determines the power-up state of the part per truth table. the dvga 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 at tenuation (db) b4 [1] b3 [1] b2 b1 b0 0 00000 1 00001 2 00010 3 00011 4 00100 5 00101 6 00110 7 00111 8 01000 9 01001 10 01010 11 01011 12 01100 13 01101 14 01110 15 01111 16 1x000 17 1x001 18 1x010 19 1x011 20 1x100 21 1x101 22 1x110 23 1x111 [1] enabling b4 disables b3, the minimum attenuation is 16 db truth table hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz control voltage table 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
12 - 43 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 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 pattern. part number package body material lead finish msl rating package marking [3] hmc628lp4 low stress injection molded plastic sn/pb solder msl1 [1] h628 xxxx HMC628LP4E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h628 xxxx [1] max peak refl ow temperature of 235 c [2] max peak refl ow temperature of 260 c [3] 4-digit lot number xxxx package information hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz
12 - 44 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 pin number function description interface schematic 1rfin this pin is dc coupled and matched to 50 ohms. a blocking capacitor is needed. 2gnd these pins and package bottom must be connected to rf/dc ground. 3 - 7 b4, b3, b2, b1, b0 see truth table, control voltage table and timing diagram. 8le 9data 10 clk 12 pup2 13 pup1 14 p/s 15 serial out serial input data delayed by 5 clock cycles. 16 ibias bias current to amplifi er. external inductor is needed. 17 iset external bias resistor to adjust the current of the amplifi er. 18 vdd supply voltage. 19 fb feedback capacitance for the amplifi er. pin descriptions hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz
12 - 45 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 hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz pin number function description interface schematic 11, 20 rfout, amp in amplifi er input. external blocking capacitor required. 21 att out attenuator output. 22 - 24 fc1, fc2, fc3 external capacitors to ground are required. place these capacitors close to the package.
12 - 46 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 hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz application circuit tuned frequency 50 - 250 mhz 250 - 500 mhz 500 - 800 mhz evaluation board p/n 118415 120101 120102 c6 1 nf 33 pf 33 pf l3 0 ohms 15 nh 12 nh c14 n/a 4.7 pf 1.5 pf components for selected frequencies
12 - 47 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 evaluation pcb the circuit board used in the 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 con- nect the top and bottom ground planes. the evalua- tion circuit board shown is available from hittite upon request. list of materials for evaluation pcb see table [1] item description j1, j2 pcb mount sma connector j3 18 pin dc connector j6, j7 dc pin c1, c3 100 pf capacitor, 0402 pkg. c2 4.7 f capacitor, 0805 pkg. c4 0.1 f capacitor, 0402 pkg. c6, c14 0402 pkg. [1] c5 - c7, c9 - c12 1000 pf capacitor, 0402 pkg. c8 10 kpf capacitor, 0805 pkg. r1 - r12 100 kohm resistor, 0402 pkg. r15 - r19 39 kohm resistor, 0402 pkg. r23 1.4 kohm resistor, 0603 pkg. l1, l2 270 nh inductor, 0603 pkg. l3 0402 pkg. [1] hmc628lp4 / 628lp4e v07.0410 bicmos mmic 5-bit digital variable gain amplifier, 50 - 800 mhz item description sw1, sw2 spdt 4 position dip switch u1 hmc628lp4(e) variable gain amplifi er pcb [2] 118413 evaluation pcb [1] when requesting an evaluation board, please reference the appropriate pcb number listed in the table components for selected frequencies. [2] circuit board material: arlon 25fr / fr4

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