PL520-20

PL520-20 Low Phase Noise VCXO (for 100-200MHz Fundamental Crystals) FE AT UR E S  100MHz to 200MHz Fundamental Mode Crystals  Output range (no PLL):  100MHz – 200MHz (3.3V).  100MHz – 170MHz (2.5V).  Low Injection Power for crystal 50uW.  Complementary outputs: CMOS, PECL or LVDS.  Selectable OE Logic (enable high or enable low).  Integrated variable capacitors.  Supports 2.5V or 3.3V-Power Supply.  Available in die form.  Die thickness is 10 mil. DESCRIPTION PL520-20 is a VCXO IC specifically designed to pull high frequency fundamental crystals. Its design was optimized to tolerate higher limits of inter-electrode capacitance and bonding capacitance to improve yield. It achieves very low current into the crystal resulting in better overall stability. Its internal varicaps allow on-chip frequency pulling, controlled by the VCON input. BLOCK DIAGRAM VCON Oscillator Amplifier X+ w/ integrated varicaps X- OE Q Q PL520-20 62 mil DIE CONFIGURATION 65 mil OUTSEL0 VDD VDD VDD VDD DNC DNC OUTSEL1 25 24 23 22 21 20 19 18 XIN 26 XOUT 27 Die ID: A1919-19B DNC 28 DNC 29 OE 30 VCON 31 C502A 12345 6 78 (1550,1475) 17 GNDBUF 16 CMOS 15 LVDSB 14 PECLB 13 VDDBUF 12 VDDBUF 11 PECL 10 LVDS 9 OE_SELECT GND GND GND GND GND Reserved GNDBUF GNDBUF Y (0,0) X DIE SPECIFICATIONS Name Size Reverse side Pad dimensions Thickness Value 62 x 65 mil GND 80 micron x 80 micron 10 mil OUTPUT SELECTION AND ENABLE Pad #18 OUTSEL1 0 0 1 1 Pad #25 OUTSEL0 0 1 0 1 Selected Ou...