Preliminary
OP4015B
•
•
•
Quartz SAW Stabilized and Filtered “Diff Sine” Technology
Fundamental-Mode Oscillation at 780.881 MHz
Voltage Tunable for Phase Lock Loop Operations
The output of this device is generated and filtered by narrowband quartz SAW elements at 780.881 MHz. The
configuration of this clock is intended to provide a pure signal for optical timing applications in noisy signal
environments. The Q/Qbar differential output swing of ±1 volt about 0 vdc has symmetry better than ±1% into
loads from 40 ohms to 70 ohms; determined by customer application. The long term frequency accuracy is
set by an external reference source allowing this device to complete a Phase Lock Loop design without the
usual noise and jitter problems associated with PLL’s.
780.881 MHz
Optical
Timing Clock
Absolute Maximum Ratings
Rating
DC Suppy Voltage
Tune Voltage
Case Temperature
Value
0 to 5.5
0 to 6
-55 to 100
Units
VDC
VDC
°C
SMC-08
Electrical Characteristics
Characteristic
Operating Frequency
Absolute Frequency
Tune Range
Tune Voltage
Tuning Linearity
Tuning Sensitivity
Modulation Bandwidth
Voltage into 50
Ω
(VSWR≤1.2)
Q and Q Output
Operating Load VSWR
Symmetry
Harmonic Spurious
Nonharmonic Spurious
Phase Noise
dBc/Hz@100Hz offset
1kHz offset
10k offset
Noise Floor
Q and Q Jitter
RMS Jitter (12 kHz to 80 MHz)
No Noise on V
CC
200 mV
P-P
from 1MHz to �½ f
O
on
Input Impedence (Tuning Port)
Output DC Resistance (between Q & Q)
DC Power Supply
Operating Voltage
Operating Current
Operating Case Temperature
Lid Symbolization (YY=Year, WW=Week)
Sym
f
O
Notes
1, 9
2
1
1, 8
2, 10
1,3
1,3
3, 4, 5
3, 4, 6
3, 4, 6, 7
Minimum
±25
0
±3%
140
125
0.60
49
300
265
1.1
2:1
51
-30
-60
-70
-100
-120
-150
.20
10
12
1
50
3.13
ppm/V
kHz
V
P-P
%
dBc
dBc
dBc/Hz
dBc/Hz
Typical
780.881
+3
Maximum
Units
MHz
ppm
VDC
df/dv
V
O
3, 4, 6, 7
3, 4, 6, 7
3
1, 3
1, 3
1, 3
1, 3
V
CC
I
CC
T
C
3.3, 5.0
5.25
70
+85°C
-40°C
RFM OP4015B YYWW
ps
PS
P-P
PS
P-P
KΩ
KΩ
VDC
mA
°C
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. COCOM CAUTION: Approval by the U.S. Department of Commerce is
required prior to export of this device.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Unless otherwise noted, all specifications include any combination of load VSWR, Vcc, and temperature, with Q and Q terminated into
50 ohm loads to ground (see typical test circuit).
Useful tuning range is in excess of what is required over temp, aging, pushing, pulling & accuracy.
The design, manufacturing process, and specifications of this device are subject to change without notice.
Only under the nominal conditions of 50
Ω
load impedance with VSWR
≤
1.2 and nominal power supply voltage.
Symmetry is defined as the pulse width (in percent of total period) measured at the 50% points of Q or Q (see timing definitions).
Jitter and other spurious outputs induced by externally generated electrical noise on V
CC
or mechanical vibration are not included in this
specification, except where noted. External voltage regulation and careful PCB layout are recommended for optimum performance.
Applies to period jitter of Q and Q. Measurements are made with the Tektronix CSA803 signal analyzer with at least 1000 samples.
Linearity is a function of the percentage variation from a permitted linear deviation versus the amount of frequency tune range
(see lin-
earity definition).
One or more of the following United States patents apply: 4,616,197; 4,670,681; 4,760,352.
BLOCK DIAGRAM
V CC
V tune
SAW Oscillator
Buffer Amplifier
Q
_
Q
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
OP4015B-041003
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RFM [ RF MONOLITHICS, INC ]
