Preliminary

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

Page 1 of 2

RFM Europe

Phone: 44 1963 251383

Fax: 44 1963 251510

http://www.rfm.com

©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

OP4018B-120806

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Operating Frequency

Absolute Frequency

1, 9

718.863785

MHz

Tune Range

2

±50

ppm

Tune Voltage

1

1.8

2.6

3

VDC

Tuning Linearity

1, 8

±5

3

5

%

Modulation Bandwidth

100

kHz

Tune DC resistance

100

K

Ω

Deviation Slope

150

250

350

ppm/volt

Q and Q Output

Voltage into 50

Ω (VSWR≤1.2)

1,3

0.6

1.1

Operating Load VSWR

1,3

2:1

Symmetry

3, 4, 5

49

51

%

Harmonic Spurious

3, 4, 6

-15

dBc

Nonharmonic Spurious

3, 4, 6, 7

-65

dBc

Phase Noise

dBc/Hz@100Hz offset

-70

-65

dBc/Hz

1kHz offset

-100

-95

dBc/Hz

10k offset

-125

-120

dBc/Hz

100k offset

-140

-135

dBc/Hz

Noise Floor

-150

dBc/Hz

Jitter

RMS Jitter (10kHz to 80MHz)

3, 4, 6, 7

0.5

3

-50

dBc

Output DC Resistance (between Q & Q)

1, 3

50

K

Ω

DC Power Supply

Operating Voltage

1, 3

3.135

3.300

3.465

VDC

Operating Current

1, 3

70

mA

Operating Ambient Temperature

1, 3

-40°C

+85°C

°C

Lid Symbolization (YY=Year, WW=Week)

RFM OP4018B YYWW

SMC-08

•

Complies with Directive 2002/95/EC (RoHS)

•

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.

Absolute Maximum Ratings

Rating

Value

Units

DC Suppy Voltage

0 to 5.5

VDC

Tune Voltage

0 to 6

VDC

Case Temperature

-55 to 100

°C

718.864 MHz

Optical

Timing Clock

OP4018B

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.

Unless otherwise noted, all specifications include any combination of load VSWR, VCC, and TC. In addition, Q and Q are termi-

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.

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.

this specification, except where noted. External voltage regulation and careful PCB layout are recommended for optimum perfor-

mance.

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.

BLOCK DIAGRAM

Q

VCC

Buffer Amplifier

SAW Oscillator

_

Vtune

Q

Pb