English
Language : 

OP4018B Datasheet, PDF (1/2 Pages) Murata Manufacturing Co., Ltd. – 718.864 MHz Optical Timing Clock
Preliminary
• Complies with Directive 2002/95/EC (RoHS)
Pb
• Fundamental-Mode Oscillation at 718.864 MHz
• Quartz SAW Stabilized and Filtered “Diff Sine” Technology
• Voltage Tunable for Phase Lock Loop Operations
• Optical Timing Reference for Forward Error Correction Applications
The output of this device is generated and filtered by narrowband quartz SAW elements at 718.864 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.
OP4018B
718.864 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
Modulation Bandwidth
Tune DC resistance
Deviation Slope
Q and Q Output
Voltage into 50 Ω (VSWR≤1.2)
Operating Load VSWR
Symmetry
Harmonic Spurious
Nonharmonic Spurious
Phase Noise
dBc/Hz@100Hz offset
1kHz offset
10k offset
100k offset
Noise Floor
Jitter
RMS Jitter (10kHz to 80MHz)
200 mVP-P from 1MHz to ½ fO on VCC
Output DC Resistance (between Q & Q)
DC Power Supply
Operating Voltage
Operating Current
Operating Ambient Temperature
Lid Symbolization (YY=Year, WW=Week)
Sym
fO
VO
VCC
ICC
TC
Notes
1, 9
2
1
1, 8
1,3
1,3
3, 4, 5
3, 4, 6
3, 4, 6, 7
3, 4, 6, 7
3
1, 3
1, 3
1, 3
1, 3
Minimum
±50
1.8
±5
100
100
150
0.6
49
Typical
718.863785
2.6
3
250
-70
-100
-125
-140
-150
50
3.135
3.300
-40°C
RFM OP4018B YYWW
Maximum
3
5
350
1.1
2:1
51
-15
-65
-65
-95
-120
-135
0.5
-50
3.465
70
+85°C
Units
MHz
ppm
VDC
%
kHz
KΩ
ppm/volt
VP-P
%
dBc
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
PSP-P
dBc
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.
BLOCK DIAGRAM
Notes:
1. Unless otherwise noted, all specifications include any combination of load VSWR, VCC, and TC. In addition, Q and Q are termi-
VCC
nated into 50 Ω loads to ground. (See: Typical Test Circuit.)
2. Customer useful tune range in excess of what part requires over temp, aging, pushing, pulling & accuracy.
3. The design, manufacturing process, and specifications of this device are subject to change without notice.
4. Only under the nominal conditions of 50 Ω load impedance with VSWR ≤ 1.2 and nominal power supply voltage.
Q
5. Symmetry is defined as the pulse width (in percent of total period) measured at the 50% points of Q or Q. (See: Timing Definitions.)
_
6. Jitter and other spurious outputs induced by externally generated electrical noise on VCC or mechanical vibration are not included in Vtune
Q
this specification, except where noted. External voltage regulation and careful PCB layout are recommended for optimum perfor-
mance.
SAW Oscillator Buffer Amplifier
7. Applies to period jitter of Q and Q. Measurements are made with the Tektronix CSA803 signal analyzer with at least 1000 samples.
8. Linearity is a function of the percentage variation from a permitted linear deviation versus the amount of frequency tune range. See
Linearity Definition.
9. One or more of the following United States patents apply: 4,616,197; 4,670,681; 4,760,352.
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
OP4018B-120806
Page 1 of 2