preliminary rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 1 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. OP4018B-120806 electrical characteristics characteristic sym notes minimum typical maximum units operating frequency absolute frequency f o 1, 9 718.863785 mhz tune range 2 50 ppm tune voltage 1 1.8 2.6 3 vdc tuning linearity 1, 8 5 3 5 % modulation bandwidth 100 khz tune dc resistance 100 k w deviation slope 150 250 350 ppm/volt q and q output voltage into 50 w (vswr 1.2) v o 1,3 0.6 1.1 v p-p operating load vswr 1,3 2:1 symmetry 3, 4, 5 49 51 % harmonic spurious 3, 4, 6 -15 dbc nonharmonic spurious 3, 4, 6, 7 -65 dbc phase noise dbc/hz@100hz offset -70 -65 dbc/hz 1khz offset -100 -95 dbc/hz 10k offset -125 -120 dbc/hz 100k offset -140 -135 dbc/hz noise floor -150 dbc/hz jitter rms jitter (10khz to 80mhz) 3, 4, 6, 7 0.5 ps p-p 200 mv p-p from 1mhz to ? f o on v cc 3 -50 dbc output dc resistance (between q & q ) 1, 3 50 k w dc power supply operating voltage v cc 1, 3 3.135 3.300 3.465 vdc operating current i cc 1, 3 70 ma operating ambient temperature t c 1, 3 -40c +85c c lid symbolization (yy=year, ww=week) rfm OP4018B yyww smc-08 ? complies with directive 2002/95/ec (rohs) ? fundamental-mode oscillation at 718.864 mhz ? quartz saw stabilized and filtered ?diff sine? technology ? voltage tunable for phase lock loop operations ? optical timing reference for forward error correction applications the output of this device is generated and filtered by narrowband quartz saw elements at 718.864 mhz. the configuration of this clock is intended to provide a pure signal for optical timing applications in noisy signal environments. the q/qbar differential output swing of 1 volt about 0 vdc has symmetry better than 1% into loads from 40 ohms to 70 ohms; determined by customer application. the long term frequency accuracy is set by an external reference source allowing this device to complete a phase lock loop design without the usual noise and jitter problems associated with pll?s. absolute maximum ratings rating value units dc suppy voltage 0 to 5.5 vdc tune voltage 0 to 6 vdc case temperature -55 to 100 c 718.864 mhz optical timing clock OP4018B caution: electrostatic sensitive device. observe precautions for handling. cocom caution: approval by the u.s. department of commerce is required prior to export of this device. notes: 1. unless otherwise noted, all specifications include any combination of load vswr, vcc, and tc. in addition, q and q are termi- nated into 50 w loads to ground. (see: typical test circuit.) 2. customer useful tune range in excess of what part requires over temp, aging, pushing, pulling & accuracy. 3. the design, manufacturing process, and specifications of this device are subject to change without notice. 4. only under the nominal conditions of 50 w load impedance with vswr 1.2 and nominal power supply voltage. 5. symmetry is defined as the pulse width (in percent of total period) measured at the 50% points of q or q . (see: timing definitions.) 6. jitter and other spurious outputs induced by externally generated electrical noise on v cc or mechanical vibration are not included in this specification, except where noted. external voltage regulation and careful pcb layout are recommended for optimum perfor- mance. 7. applies to period jitter of q and q . measurements are made with the tektronix csa803 signal analyzer with at least 1000 samples. 8. linearity is a function of the percentage variation from a permitted linear deviation versus the amount of frequency tune range. see linearity definition. 9. one or more of the following united states patents apply: 4,616,197; 4,670,681; 4,760,352. block diagram q v cc buffer amplifier saw oscillator _ v tune q pb
718.864 mhz optical timing clock rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 2 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. OP4018B-120806 smc-8 8-terminal surface mount case dimen- sion mm inches min max min max a 13.46 13.97 0.530 0.550 b 9.14 9.66 0.360 0.380 c 1.93 nominal 0.076 nominal d 3.56 nominal 0.141 nominal e 2.24 nominal 0.088 nominal f 1.27 nominal 0.050 nominal g 2.54 nominal 0.100 nominal h 3.05 nominal 0.120 nominal j 1.93 nominal 0.076 nominal k 5.54 nominal 0.218 nominal l 4.32 nominal 0.170 nominal m 4.83 nominal 0.190 nominal n 0.50 nominal 0.020 nominal a b n j l (x2) d (x8) k (x8) c h g m (x3) e f terminal number connection 1 v cc 2 ground 3 enable/disable 4 q output 5 q output 6 ground 7 8 tune input lid ground 1 2 3 4 8 7 6 5 top view electrical connections
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