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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.

RO2113-102699

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency (+25 °C)

Absolute Frequency

2, 3, 4, 5

314.425

314.575

MHz

Tolerance from 314.500 MHz

∆f

C

±75

kHz

Insertion Loss

IL

2, 5, 6

1.0

1.5

dB

Quality Factor

Unloaded Q

5, 6, 7

14,200

50

Ω Loaded Q

1,600

Temperature Stability

Turnover Temperature

6, 7, 8

10

25

40

°C

Turnover Frequency

Frequency Temperature Coefficient

FTC

0.037

Frequency Aging

Absolute Value during the First Year

1

≤10

ppm/yr

DC Insulation Resistance between Any Two Pins

5

1.0

M

Ω

RF Equivalent RLC Model

Motional Resistance

5, 7, 9

12

19

Ω

Motional Inductance

90.1991

µH

Motional Capacitance

2.83921

fF

Pin 1 to Pin 2 Static Capacitance

5, 6, 9

2.9

3.2

3.5

pF

Transducer Static Capacitance

5, 6, 7, 9

2.9

pF

Test Fixture Shunt Inductance

2, 7

80

nH

Lid Symbolization (in Addition to Lot and/or Date Codes)

RFM RO2113

TO39-3 Case

•

Ideal for LO in 315 MHz Superhet Receivers with 500 kHz IF

•

Very Low Series Resistance

•

Quartz Stability

•

Rugged, Hermetic, Low-Profile TO39 Case

•

Complies with Directive 2002/95/EC (RoHS)

The RO2113 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It pro-

vides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency oscillators operating at

approximately 314.5 MHz. The RO2113 is designed for IC based 315 MHz superhet receivers using a

500 kHz IF (Philips UAA3201T). Applications include wireless remote-control and security devices operating

in the USA under FCC Part 15 and in Canada under DoC RSS-210.

Absolute Maximum Ratings

Rating

Value

Units

CW RF Power Dissipation

(See: Typical Test Circuit)

+0

dBm

DC Voltage Between Any Two Pins

(Observe ESD Precautions)

±30

VDC

Case Temperature

-40 to +85

°C

314.5 MHz

SAW

Resonator

RO2113

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

Aging may exceed the specification for prolonged temperatures above +65°C.

Typically, aging is greatest the first year after manufacture, decreasing signifi-

cantly in subsequent years.

2.

with the resonator in the 50

Ω test system (VSWR ≤ 1.2:1). The shunt induc-

3.

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

4,616,197 and others pending.

4.

Typically, equipment designs utilizing this device require 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.

Derived mathematically from one or more of the following directly measured

8.

9.

This equivalent RLC model approximates resonator performance near the reso-

static (nonmotional) capacitance between pin1 and pin 2 measured at low fre-

quency (10 MHz) with a capacitance meter. The measurement includes case

parasitic capacitance with a floating case. For usual grounded case applica-

tions (with ground connected to either pin 1 or pin 2 and to the case), add

Pb