RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-9148

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.

HO1045-101599

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Operating Frequency

Frequency at +25°C and 12.0 VDC

1, 2

914.750

915

915.250

MHz

Tolerance from 915.0 MHz at 25°C

∆f

O

±250

kHz

Overall Frequency

1, 7

914.550

915.300

RF Output Power

2, 3

+7

dBm

Spurious Outputs

Second Harmonics

2, 3, 4

-20

-15

dBc

Third and Higher Harmonics

-35

-20

Nonharmonic

<-80

-60

RF Impedance

Nominal Impedance

3

50

Ω

Operating Load VSWR

3, 5

1.5:1

DC Power Supply

Operating Voltage

3, 6

11.6

12

12.4

VDC

Operating Current

30

40

mA

Operating Ambient Temperature

3, 6

-20

+70

°C

Lid Symbolization (YY=Year, WW=Week)

RFMHO1045 YYWW

Dip 14-8 Case

•

SAW Frequency Stabilization

•

Fundamental-Mode Oscillation at 915.0 MHz

•

0.8” x 0.5” x 0.25” Metal Dip Case

This 915.0 MHz surface-acoustic-wave (SAW) oscillator is designed for Industrial, Scientific, and Medical

(ISM) applications and as the local oscillator in FCC Part 15.247 radios. Fundamental oscillation at 915.0 MHz

eliminates all internally generated spurious outputs except integral harmonics of 915.0 MHz. The compact

size of the rugged, metal, hermetically-sealed case makes this oscillator suitable for a variety of applications.

Absolute Maximum Ratings

Rating

Value

Units

DC Supply Voltage

0 to +13

VDC

Ambient Temperature

Powered

-40 to +70

°C

Storage

-40 to +85

915.0 MHz

SAW

Oscillator

HO1045

CAUTION: Electrostatic Sensitive Device. Observe precautions for

handling. COCOMCAUTION: ApprovalbytheU.S.Departmentof

Commerce is required prior to export of this device.

Notes:

1.

One or more of the following United States patents apply: 4,616,197; 4,610,681; and

4,761,616.

2.

inal voltage ±0.01 VDC, and load impedance = 50

Ω with VSWR ≤ 1.5:1.

3.

The design, manufacturing process, and specifications of this device are subject to

change without notice.

4.

Applies to oscillator only and not to sidebands caused by external electrical or

mechanical sources. (Dedicated external voltage regulation with low-frequency filter-

ing for the DC power supply and proper circuit board layout are recommended for

optimum spectral purity.)

5.

damage will occur for any passive load impedance.)

6.

7.

Applies for any combination of Note 5 and 6 conditions.

BLOCK DIAGRAM

ELECTRICAL CONNECTIONS

RF OUTPUT

V CC

Buffer Amplifier

SAW Oscillator

Top

View

1

V

V

CC

CC

Case Ground 2

Case Ground 6

RF Output 7

13 Case Ground

9 Case Ground

8

CC