low phase noise XO, providing less than -135dBc at
10kHz offset in the 24MHz to 50MHz operating
range. The very low jitter (3ps RMS period jitter)
makes this chip ideal for applications requiring clean
reference frequency sources. Input crystal can range
from 12 to 25MHz (fundamental resonant mode).
MULTIPLIER
x2
FREQUENCY
RANGE
24 - 50MHz
OUTPUT
BUFFER
CMOS
BLOCK DIAGRAM
VCO
Divider
Reference
Divider
Phase
Comparator
Charge
Pump
Loop
Filter
VCO
CLK
XIN
XOUT
OE
XTAL
OSC
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
03/21/05 Page 1
ABX0201
Low Phase Noise XO (24MHz to 50MHz)
PIN DESCRIPTIONS
Name
CLK
VDD
OE
XIN
XOUT
N/C
GND
Number
1
2
3
4
5
6
7, 8
Type
O
P
I
I
I
-
P
Output clock.
+3.3V power supply.
Description
Output enable input. Disables (tri-state) output when low. Internal pull-up
enables output by default if pin is not connected to low.
Crystal input. See Crystal Specifications on page 3.
Crystal output. See Crystal Specifications on page 3.
Not connected.
Ground.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
SYMBOL
V
DD
V
I
V
O
T
S
T
A
T
J
MIN.
-0.5
-0.5
-65
-40
MAX.
4.6
V
DD
+0.5
V
DD
+0.5
150
85
125
260
2
UNITS
V
V
V
°C
°C
°C
°C
kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other con-
ditions above the operational limits noted in this specification is not implied.
*
Note:
Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. DC Electrical Specifications
PARAMETERS
Supply Current, Dynamic, with
Loaded Outputs
Operating Voltage
Output drive current
(High Drive)
Output drive current
(Standard Drive)
Short Circuit Current
SYMBOL
I
DD
V
DD
I
OH
I
OL
I
OH
I
OL
CONDITIONS
F
XIN
= 12 - 25MHz
Output load of 10pF
MIN.
TYP.
16
MAX.
20
3.63
UNITS
mA
V
mA
mA
mA
mA
2.97
V
OH
= V
DD
-0.4V, V
DD
=3.3V
V
OL
= 0.4V, V
DD
= 3.3V
V
OH
= V
DD
-0.4V, V
DD
=3.3V
V
OL
= 0.4V, V
DD
= 3.3V
30
30
10
10
±50
mA
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
03/21/05 Page 2
ABX0201
Low Phase Noise XO (24MHz to 50MHz)
3. AC Specification
PARAMETERS
Input Crystal Frequency
Output Clock Rise/Fall Time
(Standard Drive)
Output Clock Rise/Fall Time
(High Drive)
Output Clock Duty Cycle
SYMBOL
CONDITIONS
0.3V ~ 3.0V with 15 pF load
0.3V ~ 3.0V with 15 pF load
Measured @ 50% V
DD
MIN.
12
TYP.
2.4
1.2
MAX.
25
UNITS
MHz
ns
45
50
55
%
4. Jitter and Phase Noise Specification
PARAMETERS
RMS Period Jitter
(1 sigma – 1000 samples)
Phase Noise relative to carrier
Phase Noise relative to carrier
Phase Noise relative to carrier
Phase Noise relative to carrier
Phase Noise relative to carrier
CONDITIONS
at 44MHz, with capacitive decoup-
ling between VDD and GND.
44MHz @100Hz offset
44MHz @1kHz offset
44MHz @10kHz offset
44MHz @100kHz offset
44MHz @1MHz offset
MIN.
TYP.
3
-80
-110
-135
-130
-132
MAX.
UNITS
ps
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
5. Crystal Specifications
PARAMETERS
Crystal Resonator Frequency
Crystal Loading Capacitance Rating
Driving power
ESR
SYMBOL
F
XIN
C
L (xtal)
R
S
MIN.
12
TYP.
20
1
MAX.
25
UNITS
MHz
pF
mW
Ω
30
PACKAGE INFORMATION
8 PIN ( dimensions in mm )
Narrow SOIC
Symbol
A
A1
B
C
D
E
H
L
e
Min.
1.47
0.10
0.33
0.19
4.80
3.80
5.80
0.38
Max.
1.73
0.25
0.51
0.25
4.95
4.00
6.20
1.27
1.27 BSC
Min.
-
0.05
0.19
0.09
2.90
4.30
6.20
0.45
TSSOP
Max.
1.20
0.15
0.30
0.20
3.10
4.50
6.60
0.75
0.65 BSC
A1
B
e
C
L
A
D
E
H
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
03/21/05 Page 3
ABX0201
Low Phase Noise XO (24MHz to 50MHz)
ORDERING INFORMATION
For part ordering, please contact our Sales Department:
30332 Esperanza., Rancho Santa Margarita, Ca 92688
Ph: 949-546-8000 Fax: 949-546-8001
PART NUMBER
The order number for this device is a combination of the following:
Device number, Package type and Operating temperature range
ABX0201 (H) X C
PART NUMBER
Optional High Drive
TEMPERATURE
C=COMMERCIAL
I=INDUSTRAL
PACKAGE TYPE
S=SOIC, O=TSSOP
Order Number
ABX0201OC-T
ABX0201OC
ABX0201HOC-T
ABX0201HOC
ABX0201SC-T
ABX0201SC
ABX0201HSC-T
ABX0201HSC
Marking
ABX0201OC
ABX0201OC
ABX0201HOC
ABX0201HOC
ABX0201SC
ABX0201SC
ABX0201HSC
ABX0201HSC
Package Option
TSSOP - Tape and Reel
TSSOP - Tube
TSSOP - Tape and Reel
TSSOP - Tube
SOIC – Tape and Reel
SOIC – Tube
SOIC – Tape and Reel
SOIC – Tube
Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information fur-
nished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the accuracy of said infor-
mation and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY:
Abracon’s products are not authorized for use as critical components in life support devices or systems without the express
written approval of the President of Abracon Corporation.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
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