®

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-9148

E-mail: info@rfm.com

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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.

RO2188-031300

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency at +25 °C

Absolute Frequency

2, 3, 4, 5

389.900

390.100

MHz

Tolerance from 304.0 MHz

∆f

C

±100

kHz

Insertion Loss

IL

2, 5, 6

0.9

2.0

dB

Quality Factor

Unloaded Q

5, 6, 7

12,000

50

Ω Loaded Q

1,200

Temperature Stability

Turnover Temperature

6, 7, 8

27

42

57

°C

Turnover Frequency

kHz

Frequency Temperature Coefficient

FTC

0.037

Frequency Aging

Absolute Value during the First Year

|fA|

1

≤10

ppm/yr

DC Insulation Resistance between Any Two Terminals

5

1.0

M

Ω

RF Equivalent RLC Model

Motional Resistance

5, 7, 9

11

26

Ω

Motional Inductance

54.963

µH

Motional Capacitance

3.0299

fF

Pin 1 to Pin 2 Static Capacitance

5, 6, 9

3.6

3.9

4.2

pF

Transducer Static Capacitance

5, 6, 7, 9

3.65

pF

Test Fixture Shunt Inductance

2, 7

43

nH

Lid Symbolization

E319

•

Ideal for 390.0 MHz Transmitters

•

Very Low Series Resistance

•

Quartz Stability

•

Rugged, Hermetic, TO39-3 Package

•

Complies with Directive 2002/95/EC (RoHS)

The RO2188 is a true one-port, surface-acoustic-wave (SAW) resonator in TO39-3 case. It provides reliable,

fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating at 390.0 MHz.

Absolute Maximum Ratings

Rating

Value

Units

CW RF Power Dissipation

+5

dBm

DC Voltage Between Any Two Pins (Observe ESD Precautions)

±30

VDC

Case Temperature

-40 to +85

°C

390.0 MHz

SAW

Resonator

RO2188

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

Lifetime (10 year) frequency aging.

2.

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 gov-

ernment approval, which is the responsibility of the equipment manufacturer.

5.

6.

The design, manufacturing process, and specifications of this device are sub-

ject to change without notice.

7.

Derived mathematically from one or more of the following directly measured

8.

9.

This equivalent RLC model approximates resonator performance near the

the static (nonmotional) capacitance between the two terminals measured at

low frequency (10 MHz) with a capacitance meter. The measurement

includes parasitic capacitance with a floating case. Case parasitic capaci-

tance is approximately 0.25pF. Transducer parallel capacitance can be cal-

TO39-3 Case

Pb