®

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.

RO2144D_RO2144D-1_RO2144D-2_083104

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Frequency (+25 °C) Nominal Frequency

RO2144D

2, 3, 4, 5

916.405

916.595

MHz

RO2144D-1

916.300

916.700

RO2144D-2

916.350

916.650

Tolerance from 916.5 MHz

RO2144D

∆f

C

±95

kHz

RO2144D-1

±200

RO2144D-2

±150

Insertion Loss

IL

2, 5, 6

1.20

2.5

dB

Quality Factor

Unloaded Q

5, 6, 7

23,509

50

Ω Loaded Q

4,000

Temperature Stability

Turnover Temperature

6, 7, 8

10

25

40

°C

Turnover Frequency

fc

MHz

Frequency Temperature Coefficient

FTC

0.032

Frequency Aging

Absolute Value during the First Year

|fA|

1

10

ppm

DC Insulation Resistance between Any Two Terminals

5

1.0

M

Ω

RF Equivalent RLC Model

Motional Resistance

5, 6, 7, 9

14.95

Ω

Motional Inductance

21.94

µH

Motional Capacitance

1.37

fF

Transducer Static Capacitance

5, 6, 9

1.95

pF

Test Fixture Shunt Inductance

2, 7

15.05

nH

Lid Symbolization

RO2144D 432//YWWS, RO2144D-1 493//YWWS, RO2144D-2 537//YWWS

Standard Reel Quantity

Reel Size 7 Inch

10

500 Pieces / Reel

Reel Size 13 Inch

3000 Pieces / Reel

•

Ideal for 916.5 MHz FCC Part 15 Transmitters

•

Very Low Series Resistance

•

Quartz Stability

•

Complies with Directive 2002/95/EC (RoHS)

The RO2144D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.

It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 916.5 MHz.

This SAW is designed specifically for remote-control and data-link transmitters operating in the USA under

FCC Part 15 regulations.

Absolute Maximum Ratings

Rating

Value

Units

Input Power Level

10

dBm

DC Voltage

12

VDC

Storage Temperature

-40 to +85

°C

Soldering Temperature (10 seconds / 5 cycles max.)

260

°C

916.5 MHz

SAW

Resonator

RO2144D

RO2144D-1

RO2144D-2

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

exceed the specification for prolonged temperatures above +65°C. Typically, aging is great-

est the first year after manufacture, decreasing in subsequent years.

2.

onator in the 50

Ω test system (VSWR ≤ 1.2:1). The shunt inductance, L

3.

One or more of the following United States patents apply: 4,454,488 and 4,616,197.

4.

Typically, equipment utilizing this device requires emissions testing and government

approval, which is the responsibility of the equipment manufacturer.

5.

6.

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

without notice.

7.

8.

9.

This equivalent RLC model approximates resonator performance near the resonant fre-

capacitance between the two terminals measured at low frequency (10 MHz) with a capaci-

tance meter. The measurement includes parasitic capacitance with "NC” pads unconnected.

Case parasitic capacitance is approximately 0.05 pF. Transducer parallel capacitance can by

10.

Tape and Reel Standard Per ANSI/EIA 481.

SM3838-6 Case

3.8 X 3.8

Pb