(Preliminary) ABV8068/69
320-640MHz Low Phase Noise VCXO
FEATURES
PACKAGE PIN ASSIGNMENT
•
Less than 0.4ps RMS (12KHz-20MHz) phase
jitter for all frequencies.
Low phase noise output (@ 1MHz frequency
offset)
VDDANA
XIN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SEL0^
•
SEL1^
∗
∗
-140dBc/Hz for 320.0MHz,
-131dBC/Hz for 622.08MHz
XOUT
GNDBUF
QBAR
SEL2^
OE_CTRL
VCON
GNDANA
LP
•
•
•
•
•
•
•
•
20MHz-40MHz crystal input.
320MHz-640MHz output.
PECL, or LVDS outputs.
No external varicap required.
Output Enable selector.
Wide pull range (+/-200ppm).
3.3V operation.
VDDBUF
Q
GNDBUF
LM
16-pin TSSOP
Available in 3x3 QFN or 16-pin TSSOP
packages.
DESCRIPTION
12 11 10
13
9
4
8
7
6
5
XOUT
DNC
GNDBUF
QBAR
VDDBUF
Q
The ABV806X 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.
14
15
16
ABV806X
OE_CTRL
VCON
1
2
3
The ABV806X is designed to address the demanding
requirements of high performance applications such
as SONET, GPS, Video, etc.
3x3mm QFN
Note1: ^ Denotes internal pull up resistor.
BLOCK DIAGRAM
VCON
VCO
Divider
VARICAP
Charge
QBAR
Output
Pump
XIN
Phase
Detector
VCO
(FXiNx16)
XTAL
OSC
+
Divider
Loop
Q
XOUT
Filter
OE
Performance Tuner
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 1