microwave corporation 15 - 50 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com vcos - smt 15 hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 general description features functional diagram the hmc398qs16g is a single chip gaas ingap heterojunction bipolar transistor (hbt) mmic vco. the hmc398qs16g integrates a resonator, negative resistance device, varac- tor diode and divide-by-8 prescaler. the vco?s phase noise performance is excellent over tem- perature, shock, and process due to the oscilla- tor?s monolithic structure. power output is +7 dbm typical from a 5v supply voltage. the voltage controlled oscillator is packaged in a low cost, surface mount 16 leaded qsop package with an exposed base for improved rf and thermal performance. the hmc398qs16g requires no external components pout: +7 dbm phase noise: -105 dbc/hz @100 khz typ. no external resonator needed single supply: 5v @ 325 ma qsop16g smt package typical applications low noise mmic vco w/divide-by-8 for ku-band applications such as: pt to pt radios multi-pt radios / lmds vsat electrical speci cations, t a = +25?c, vcc1, vcc2 = +5.0v parameter min. typ. max. units frequency range 14.0 - 15.0 ghz power output rf output divided output +3 -9 +7 -6 dbm dbm ssb phase noise @ 100 khz offset, vtune= +5v @ rf output -105 dbc/hz tune voltage vtune 1.0 10.0 v supply current icc 1 (digital) icc 2 (rf) 65 260 ma ma tune port leakage current (vtune= 10v) 10 a output return loss 2db harmonics/subharmonics 1/2 3/2 2nd 5/2 -20 -30 -12 -40 dbc dbc dbc dbc pulling (into a 2.0:1 vswr) 4 mhz pp pushing @ vtune= 5v 30 mhz/v frequency drift rate 1.5 mhz/c
microwave corporation 15 - 51 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com 15 vcos - smt 13.8 13.9 14 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 15 15.1 15.2 15.3 15.4 12345678910 vcc= 4.75v vcc= 5.0v vcc= 5.25v output frequency (ghz) tuning voltage (volts) 0 50 100 150 200 250 300 350 400 12345678910 +25 c +85 c -40 c sensitivity (mhz/volt) tuning voltage (volts) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 12345678910 +25 c +85 c -40 c output power (dbm) tuning voltage (volts) gaas mmic sub-harmonically pumped mixer 17 - 25 ghz hmc398qs16g frequency vs. tuning voltage, t= 25? ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 sensitivity vs. tuning voltage, vcc= +5v 13.8 13.9 14 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 15 15.1 15.2 15.3 15.4 12345678910 +25 c +85 c -40 c output frequency (ghz) tuning voltage (volts) frequency vs. tuning voltage, vcc= +5v output power vs. tuning voltage, vcc= +5v -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 3 10 4 10 5 10 6 10 7 +25 c +85 c -40 c ssb phase noise (dbc/hz) offset frequency (hz) ssb phase noise @ vtune= 5v -120 -110 -100 -90 -80 -70 -60 12345678910 10 khz offset 100 khz offset ssb phase noise (dbc/hz) tuning voltage (volts) ssb phase noise vs. tuning voltage
microwave corporation 15 - 52 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com vcos - smt 15 1.7 1.72 1.74 1.76 1.78 1.8 1.82 1.84 1.86 1.88 1.9 1.92 1.94 12345678910 +25 c +85 c -40 c divided output frequency (ghz) tuning voltage (volts) hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 divided output frequency vs. tuning voltage, vcc= +5v -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 12345678910 +25 c +85 c -40 c divided output power (dbm) tuning voltage (volts) divided output power vs. tuning voltage, vcc= +5v* *note: tuning voltage must not drop below 1.0v for proper divider output. -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 3 10 4 10 5 10 6 10 7 ssb phase noise (dbc/hz) offset frequency (hz) divided output ssb phase noise @ vtune = 5v
microwave corporation 15 - 53 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com 15 vcos - smt hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 absolute maximum ratings outline drawing vcc1, vcc2 +5.5 storage temperature -65 to +150 c operating temperature -40 to +85 c vtune 0 to 11v notes: 1. package body material: low stress injection molded plastic. silica and silicon impregnated. 2. leadframe material: copper alloy 3. leadframe plating: tin/lead solder 4. dimensions are in inches [millimeters]. 5. dimension does not include moldflash of 0.15 mm per side. 6. dimension does not include moldflash of 0.25 mm per side. 7. all ground leads and ground paddle must be soldered to pcb rf & dc ground. typical supply current vs. vcc note: vco will operate over full voltage range shown above. vcc (v) icc (ma) 4.75 300 5.0 325 5.25 350
microwave corporation 15 - 54 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com vcos - smt 15 hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 pin descriptions pin number function description interface schematic 1 rf out rf output (ac coupled). 2, 3, 4, 6, 8, 9, 10, 13, 14, 16 n/c no connection 5 vtune control voltage input. modulation port bandwidth dependent on drive source impedance. 7, 15 vcc1, vcc2 supply voltage, 5v 11 out divided output 12 nout divided output 180 output phase with pin 11. gnd package bottom has an exposed metal paddle that must be rf & dc grounded.
microwave corporation 15 - 55 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com 15 vcos - smt hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 the circuit board used in the ? nal application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package ground leads and backside ground slug should be connected directly to the ground plane similar to that shown. a suf? cient 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. evaluation pcb list of materials item description j1 - j4 pc mount sma rf connector j5 - j6 2 mm dc header c1 - c2 10 f tantalum capacitor c3 - c6 1,000 pf capacitor 0402 pkg. u1 hmc398qs16g vco pcb* 104436 eval board * circuit board material: rogers 4350
microwave corporation 15 - 56 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com vcos - smt 15 hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 typical application circuit
microwave corporation 15 - 57 for price, delivery, and to place orders, please contact hittite microwave corporation: 12 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order online at www.hittite.com 15 vcos - smt hmc398qs16g ku-band mmic vco with divide-by-8, 14.0 - 15.0 ghz v01.0302 notes:
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