Preliminary

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

Page 1 of 5

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.

OP4008B-041003

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Operating Frequency

Absolute Frequency

1, 9

669.327

MHz

Tuning Range

2

±100

ppm

Tuning Voltage

1

0

+3

V

Tuning Linearity

1, 8

±3

%

Tuning Sensitivity

df/dv

2,10

140

300

ppm/V

Modulation Bandwidth

125

265

kHz

Q and Q Output

Voltage into 50

Ω (VSWR≤1.2)

1,3

0.60

1.1

Operating Load VSWR

1,3

2:1

Symmetry

3, 4, 5

49

51

%

Harmonic Spurious

3, 4, 6

-30

dBc

Nonharmonic Spurious

3, 4, 6, 7

-60

dBc

Phase Noise

@100 Hz offset

-75

dBc/Hz

@ 1 kHz offset

-105

dBc/Hz

@ 10 k offset

-125

dBc/Hz

Noise Floor

-155

dBc/Hz

Q and Q Jitter

RMS Jitter

3, 4, 6, 7

2

3, 4, 6, 7

12

3

12

Output DC Resistance (between Q & Q)

1, 3

50

K

Ω

DC Power Supply

Operating Voltage

1, 3

3.13

3.3, 5.0

5.25

Vdc

Operating Current

1, 3

70

mA

Operating Case Temperature

1, 3

-40

+85

°C

Lid Symbolization (YY=Year, WW=Week)

RFM OP4008B YYWW

SMC-08

•

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 environ-

ments. 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

Value

Units

DC Suppy Voltage

0 to 5.5

Vdc

Tuning Voltage

0 to 6

Vdc

Case Temperature

-55 to 100

°C

669.327 MHz

Optical

Timing Clock

OP4008B

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 temperature, with Q and Q terminated

into 50 ohm loads to ground (see typical test circuit).

2.

Useful tuning range is in excess of what is required 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.

10.

Over the range of 669.327 MHz ±25 ppm and the conditions of Note 1.

BLOCK DIAGRAM

Q

VCC

Buffer Amplifier

SAW Oscillator

_

Vtune

Q