agilent vto-1990-sma, VTO-2150-sma voltage controlled oscillator data sheet description the vto-1990-sma and VTO-2150-sma provides a fundamental, low jitter source as a key component for the data re-timing in the transmitter 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 hyperabrupt varactor diode to provide the tuning capability. the oscillator output is then coupled to an agilent gaas fet mmic amplifier and mmic multiplier chain to double the frequency. finally the output is filtered through a bandpass filter prior to outputting the signal at 19.906 or 21.509 ghz. features operating frequency: 19.906 or 21.509 ghz output power (50 ? load): 3 dbm minimum modulation sensitivity: 10 to 20 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: 40 mhz 1.180" x 0.950" x 0.400" 5 volt bias optional applications transmitter and receiver sub- systems for oc-768/stm-256 applications 20 ghz source functional block diagram vto-1990-sma and VTO-2150-sma absolute maximum ratings [1] parameter units ratings positive supply voltage v 0 to +10 tuning voltage v 0 to +12 operating temperature c -10 to +95 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 x2
2 vto-1990-sma & VTO-2150-sma summary characterization, 0 c to 75 c parameter units min typ max frequency range f o ghz 19.906 or 21.509 vt @ f o ghz v 0 10 power output ( 50 ? load) dbm 3 7 modulation sensitivity mhz/v 10 20 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 -100 -97 frequency drift over temperature mhz 40 pulling figure (12 db return loss) mhz 1 pushing figure, 0.2v supply mhz 10 positive supply voltage v 7.8 8 8.2 positive supply current ma 125 tuning port input capacitance pf 12 dimensions inches 1.180" x 0.950" x 0.400" typical performance curves @ +25 c figure 1. typical phase noise performance. 0 -20 -40 -60 -80 -100 -120 -140 -160 ssb phase noise (dbc/hz) 10 100 1k 10k 100k 10m 100m 1m offset from carrier (hz) figure 2. frequency and modulation sensitivity vs. tuning voltage. 20 19.95 19.9 19.85 19.8 frequency (ghz) 16 14 12 10 8 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. 8 6 4 2 power (dbm) 02 6 4 810 tuning voltage (vdc)
3 package drawing and mechanical dimensions (inches) ordering information part number vto-1990-sma sonet/sdh 19.906 ghz VTO-2150-sma fec 21.509 ghz
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. may 28, 2002 5988-6661en
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