®

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.

RP2984-110599

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency

Absolute Frequency

2, 3, 4, 5,

423.120

423.320

MHz

Tolerance from 423.220 MHz

∆f

C

±100

kHz

Insertion Loss

IL

2, 5, 6

5.2

8.0

dB

Quality Factor

Unloaded Q

5, 6, 7

15,200

50

Ω Loaded Q

6,900

Temperature Stability

Turnover Temperature

6, 7, 8

24

39

54

°C

Turnover Frequency

kHz

Frequency Temp. Coefficient

FTC

0.037

Frequency Aging

Absolute Value during First Year

6

≤ 10

ppm/yr

DC Insulation Resistance between Any Two Pins

5

1.0

M

Ω

RF Equivalent RLC

Motional Resistance

5, 7, 9

82

152

Ω

Motional Inductance

475.283

µH

Motional Capacitance

0.297547

fF

Shunt Static Capacitance

5, 6, 9

2.2

2.5

2.8

pF

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

RFM P1298

TO39-3 Case

•

Ideal for 433.92 MHz Superhet Receiver LOs

•

Nominal Insertion Phase Shift of 180° at Resonance

•

Quartz Stability

•

Rugged, Hermetic, Low-Profile TO39 Case

•

Complies with Directive 2002/95/EC (RoHS)

The RP1298 is a two-port, 180° surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It pro-

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

mately 423.22 MHz. The RP1298 is designed for 433.92 MHz superhet receivers in remote-control and

wireless security applications operating in Europe under ETSI I-ETS 300 220 and in Germany under FTZ 17

TR 2100.

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

423.22 MHz

SAW

Resonator

RP1298

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.

2.

3.

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

4.

Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufac-

turer.

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 frequency and is provided for reference only. The capacitance

capacitance.

Pb