Electrical Characteristics
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Over the range of 669.327 MHz ±25 ppm and the conditions of Note 1.
www.RFM.com
©2008 by RF Monolithics, Inc.
• Quartz SAW Stabilized and Filtered “Diff Sine” Technology
• Fundamental-Mode Oscillation at 669.327 MHz
• 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 narrow-band quartz SAW elements at 669.327 MHz.
The configuration of this clock provides a pure signal for optical timing applications in noisy signal
environments. The Q/Q differential output swing of ±1 volt about 0 Vdc has symmetry better than ±1% into
loads from 40 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.
Absolute Maximum Ratings
Rating
DC Suppy Voltage
Tuning Voltage
Case Temperature
Characteristic
Output DC Resistance (between Q & Q)
DC Power Supply
Operating Frequency
Q and Q Output
Phase Noise
Q and Q Jitter
Operating Case Temperature
Lid Symbolization (YY=Year, WW=Week)
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
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 linearity definition).
One or more of the following United States patents apply: 4,616,197; 4,670,681; 4,760,352.
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:
with 200 mV
E-mail: info@rfm.com
P-P
noise added from 1 MHz to ½ f
Voltage into 50 Ω (VSWR≤1.2)
Absolute Frequency
Tuning Range
Tuning Voltage
Tuning Linearity
Tuning Sensitivity
Modulation Bandwidth
Operating Load VSWR
Symmetry
Harmonic Spurious
Nonharmonic Spurious
@100 Hz offset
@ 1 kHz offset
@ 10 k offset
Noise Floor
RMS Jitter
No Noise on V
Operating Voltage
Operating Current
CC
O
Sym
df/dv
V
I
V
T
f
CC
CC
O
C
O
Value
-55 to 100
0 to 5.5
3, 4, 6, 7
3, 4, 6, 7
3, 4, 6, 7
0 to 6
Notes
3, 4, 5
3, 4, 6
2,10
1, 9
1, 8
1, 3
1, 3
1, 3
1, 3
1,3
1,3
2
1
3
CC
or mechanical vibration are not included in this specification, except
Units
Minimum
RFM OP4008B YYWW
±100
0.60
3.13
140
125
-40
49
50
0
Vdc
Vdc
°C
Typical
669.327
3.3, 5.0
-105
-125
-155
265
-75
±3
12
12
2
Timing Clock
669.327 MHz
OP4008B
Optical
Maximum
SMC-08
5.25
+85
300
1.1
2:1
-30
-60
+3
51
70
OP4008B - 3/27/08
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ppm/V
Units
ps
ps
ps
MHz
ppm
V
kHz
dBc
dBc
Vdc
Page 1 of 5
KΩ
mA
°C
%
%
V
P-P
P-P
P-P
P-P