(Preliminary)
PL580-68/69
320-640MHz Low Phase Noise VCXO
FEATURES
•
•
Less than 0.4ps RMS (12KHz-20MHz) phase
jitter for
all frequencies
.
Low phase noise output (@ 1MHz frequency
offset
∗
-140dBc/Hz for 320.0MHz,
∗
-131dBC/Hz for 622.08MHz
20MHz-40MHz crystal input.
320MHz-640MHz output.
Available in PECL, or LVDS outputs.
No external varicap required.
Output Enable selector.
Wide pull range (+/-200ppm).
3.3V operation.
Available in 3x3 QFN or 16-pin TSSOP
packages.
PACKAGE PIN ASSIGNMENT
VDDANA
XIN
XOUT
SEL2^
OE_CTRL
VCON
GNDANA
LP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SEL0^
SEL1^
GNDBUF
QBAR
VDDBUF
Q
GNDBUF
LM
PL580-6X
VDDANA
•
•
•
•
•
•
•
•
DNC
10
DESCRIPTION
The PL580-6X is a monolithic low jitter and low
phase noise VCXO, capable of 0.4ps RMS phase
jitter and PECL or LVDS outputs, covering a wide
frequency output range up to 640MHz. It allows the
control of the output frequency with an input voltage
(VCON), using a low cost crystal.
The PL580-6X is designed to address the
demanding requirements of high performance
applications such as SONET, GPS, Video, etc.
XOUT
DNC
OE_CTRL
VCON
12
13
14
15
16
1
11
DNC
9
XIN
8
7
6
GNDBUF
QBAR
VDDBUF
Q
PL580-6X
2
3
4
5
GNDANA
Note1: ^ Denotes internal pull up resistor.
BLOCK DIAGRAM
VCON
VARICAP
VCO
Divider
Charge
Pump
+
Loop
Filter
GNDBUF
LP
LM
XIN
XOUT
XTAL
OSC
Phase
Detector
VCO
(F
XiN
x16)
Output
Divider
QBAR
Q
Performance Tuner
OE
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 11/28/05 Page 1