agilent vto-3981-k, VTO-4301-K voltage controlled oscillator data sheet description the vto-3981-k and VTO-4301-K provide a fundamental, low jitter source as a key component for the data re-timing in the trans- mitter subsystem and clock and data recovery in the receiver of the 40 gb fiber optic systems. the oscillator uses an extremely high performance low noise agilent silicon bipolar transistor in conjunction with a hyper- abrupt varactor diode to provide the tuning capability. the oscilla- tor output is then coupled to an agilent gaas fet mmic ampli- fier and mmic multiplier chain to quadruple the frequency. finally the output is filtered through a band pass filter prior to outputting the signal at 39.813 or 43.018 ghz. features operating frequency: 39.813 ghz or 43.018 ghz output power (50 ? load): 3 dbm minimum modulation sensitivity: 20 to 40 mhz/v tuning voltage: 0 to 10 volts low jitter (less than 50 femto seconds from 50 khz to 80 mhz) frequency drift over 0 c to +75 c: 80 mhz 1.181" x 0.95" x 0.4" 5 volt bias optional applications transmitter and receiver sub- systems for oc-768/stm-256 applications 40 ghz source functional block diagram vto-3981-k, VTO-4301-K absolute maximum ratings [1] parameter units ratings positive supply voltage v 0 to +10 negative supply voltage v 0 to -6 tuning voltage v 0 to +12 operating temperature c 0 to +85 storage temperature c -40 to +130 note: 1. operation of this device in excess of any of these limits may cause permanent damage. output amp x4
2 vto-3981-k, VTO-4301-K summary characterization, 0 c to 75 c parameter units min typ max frequency range, f o ghz 39.813 or 43.018 vt @ 39.813 ghz v 0 10 power output (50 ? load) dbm 3 7 modulation sensitivity mhz/v 20 40 modulation sensitivity variation % -20 20 modulation bandwidth mhz 100 output return loss db 10 12 second harmonic (below carrier) dbc -20 third harmonic (below carrier) dbc -20 sub harmonically related spurious dbc -30 spurious output (below carrier) dbc -65 phase noise @ 100 khz from f o (below carrier) dbc/hz -95 -90 frequency drift over temperature mhz 80 pulling figure (12 db return loss) mhz 2 pushing figure, 0.2v supply mhz 20 tuning port input capacitance pf 12 positive supply voltage v 7.8 8.2 positive supply current ma 150 negative supply voltage v -4.8 -5.2 negative supply current ma 15 typical performance curves @ +25 c figure 1. typical phase noise performance. 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 ssb phase noise (dbc/hz) 110 100 1k 10k 10m 1m 100m 100k offset from carrier (hz) figure 2. frequency and modulation sensitivity vs. tuning voltage. 40.0 39.9 39.8 39.7 39.6 frequency (ghz) 32 28 24 20 16 modulation sensitivity ( mhz/v ) 0.5 1.5 2.5 3.5 6.5 4.5 5.5 9.5 8.5 7.5 tuning voltage (vdc) figure 3. power output. 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 power (dbm) 0.5 1.5 2.5 3.5 6.5 4.5 5.5 9.5 8.5 7.5 tuning voltage (vdc)
3 package drawing and mechanical dimensions (inches) ordering information part number vto-3981-k sonet/sdh 39.813 ghz VTO-4301-K fec 43.018 ghz +8v ?v
www.agilent.com/semiconductors for product information and a complete list of distributors, please go to our web site. for technical assistance call: americas/canada: +1 (800) 235-0312 or (408) 654-8675 europe: +49 (0) 6441 92460 china: 10800 650 0017 hong kong: (+65) 6271 2451 india, australia, new zealand: (+65) 6271 2394 japan: (+81 3) 3335-8152(domestic/international), or 0120-61-1280(domestic only) korea: (+65) 6271 2194 malaysia, singapore: (+65) 6271 2054 taiwan: (+65) 6271 2654 data subject to change. copyright ? 2002 agilent technologies, inc. july 23, 2002 5988-6977en
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