P521-48DC View Datasheet(PDF) - PhaseLink Corporation
Part Name
Description
MFG CO.
'P521-48DC' PDF : 6 Pages View PDF
Preliminary P521-48
Low Phase Noise PECL VCXO (27MHz to 65MHz)
PAD ASSIGNMENT AND DESCRIPTION
Pad #
Name
X (µm)
Y (µm)
Description
Control Voltage input. Use this pin to change the
1
VCON
329.6
110.1
output frequency by varying the applied Control
Voltage.
2
GNDOSC
498.3
110.0
GND connection for oscillator circuitry.
3
GNDANA
696.2
110.0
GND connection for analog circuitry.
4
GNDANA
825.0
110.0
GND connection for analog circuitry.
5
GNDBUF
973.6
110.0
GND connection for output buffer circuitry.
6
GNDBUF
1150.0
109.1
GND connection for output buffer circuitry.
7
GNDBUF (optional)
1183.6
302.2
GND connection for output buffer circuitry.
8
PECL
1183.6
452.3
PECL output
9
PECLBAR
1183.6
613.5
PECL complementary output.
VDD connection for output buffer circuitry.
10
VDDBUF (optional)
1182.4
745.9
VDDBUF should be separately decoupled from other
VDDs whenever possible.
VDD connection for output buffer circuitry.
11
VDDBUF
1252.4
903.6
VDDBUF should be separately decoupled from other
VDDs whenever possible.
VDD connection for analog circuitry.
12
VDDANA
1252.4
1081.3
VDDANA should be separately decoupled from other
VDDs whenever possible.
13
Not used
1058.5
1221.6
14
OESEL
864.5
1221.6
Selector input to choose the OE control logic. See
table on page 1.
VDD connection for oscillator circuitry.
15
VDDOSC
624.0
1222.7
VDDOSC should be separately decoupled from other
VDDs whenever possible.
16
Not used
467.1
1222.6
17
OSCOFF
271.1
18
GNDOSC (optional)
109.4
19
VCON
108.9
20
XIN
109.0
1222.6
1222.9
1062.1
865.8
Oscillator Off Selection input pad. When low, turns
off the oscillator when output is disabled. When high
(default), oscillator running when output is disabled.
Internal pull-up
GND connection for oscillator circuitry.
Control Voltage input. Use this pin to change the
output frequency by varying the applied Control
Voltage (internally connected to pad 1).
Crystal oscillator input pad.
21
XOUT
108.6
358.4
Crystal oscillator output pad.
22
OECTRL
108.6
146.5
OE input pad. See table on page 1.
Note: for optimal Phase Noise performance, it is recommended to bond all optional VDD and GND pads.
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 3/02/04 Page 2
Share Link: 
