PLL520-20 Datasheet, PDF (1/7 Pages) PhaseLink Corporation – Low Phase Noise VCXO (for 100-200MHz Fundamental Crystals)

Preliminary PLL520-20
Low Phase Noise VCXO (for 100-200MHz Fundamental Crystals)
FEATURES
• 100MHz to 200MHz Fundamental Mode Crystal.
• Output range: 100MHz – 200MHz (no PLL).
• 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.
DESCRIPTIONS
PLL520-20 is a VCXO IC specifically designed to
pull high frequency fundamental crystals. Its design
was optimized to tolerate higher limits of
interelectrodes capacitance and bonding
capacitance to improve yield. It achieves very low
current into the crystal resulting in better overall
stability. Its internal varicaps allow an on chip
frequency pulling, controlled by the VCON input.
BLOCK DIAGRAM
VCON ^Oscillator
Amplifier
X+
w/
integrated
varicaps
X-
OE
Q
Q
PLL520-20
DIE CONFIGURATION
65 mil
25
24 23 22 21
20
19
18
XIN 26
XOUT 27
Die ID:
A1919-19B
DNC 28
DNC 29
OE
30
CTRL
VCON 31
C502A
1 23 4 5
6
78
(1550,1475)
17 GNDBUF
16 N/C
15 LVDSB
14 PECLB
13 VDDBUF
12 VDDBUF
11 PECL
10 LVDS
9 OUTSEL^
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 Output
High Drive CMOS
Standard CMOS
LVDS
PECL (default)
OE_SELECT OE_CTRL
(Pad #9)
(Pad #30)
State
0
0
Tri-state
1 (Default) Output enabled
1 (Default)
0 (Default) Output enabled
1
Tri-state
Pad #9, 18, 25: Bond to GND to set to “0”, bond to VDD to set to “1”
No connection results to “default” setting through internal pull-up/-down.
Pad #30: Logical states defined by PECL levels if OE_SELECT (pad #9) is “1”
Logical states defined by CMOS levels if OE_SELECT is “0”
47745 Fremont Blvd., Fremont, California 94538 TEL [phone] FAX [phone] www.phaselink.com Rev 03/03/05 Page 1