RP1237 RFM [RF Monolithics, Inc], RP1237 Datasheet

RP1237

Manufacturer Part Number

RP1237

Description

418.0 MHz SAW Resonator

Manufacturer

RFM [RF Monolithics, Inc]

Datasheet

1.RP1237.pdf (2 pages)

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RF Monolithics, Inc.

RFM Europe

•

The RP1237 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 fixed-frequency transmitters operating at

418.0 MHz. The RP1237 is designed specifically for remote-control and wireless security transmitters oper-

ating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.231 regulations.

Absolute Maximum Ratings

Electrical Characteristics

CW RF Power Dissipation (See: Typical Test Circuit)

DC Voltage Between Any Two Pins (Observe ESD Precautions)

Case Temperature

Center Frequency

Insertion Loss

Quality Factor

Temperature Stability

Frequency Aging

DC Insulation Resistance between Any Two Pins

RF Equivalent RLC

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

Designed for 418.00 MHz Transmitters

Nominal Insertion Phase Shift of 180° at Resonance

Quartz Stability

Rugged, Hermetic, Low-Profile TO39 Case

Complies with Directive 2002/95/EC (RoHS)

Frequency aging is the change in f

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

The frequency f

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

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

turer.

Unless noted otherwise, case temperature T

The design, manufacturing process, and specifications of this device are subject to change without notice.

Derived mathematically from one or more of the following directly measured parameters: f

Turnover temperature, T

calculated from: f = f

This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance

capacitance.

OSCILLATOR

is the measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case parasitic

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

or f

Phone: (972) 233-2903

Phone: 44 1963 251383

TRANSMITTER

is the frequency of minimum IL with the resonator in the specified test fixture in a 50

Characteristic

Absolute Frequency

Tolerance from 418.000 MHz

Unloaded Q

Turnover Temperature

Turnover Frequency

Frequency Temp. Coefficient

Absolute Value during First Year

Motional Resistance

Motional Inductance

Motional Capacitance

Shunt Static Capacitance

[1 - FTC (T

, is the temperature of maximum (or turnover) frequency, f

Rating

Loaded Q

is less than the resonator f

- T

with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures

)

]. Typically, oscillator T

= +25°C± 5°C

Fax: (972) 387-9148

Fax: 44 1963 251510

Sym

FTC

is 20° less than the specified resonator T

-40 to +85

Value

2, 3, 4, 5,

±30

Notes

2, 5, 6

5, 6, 7

6, 7, 8

5, 7, 9

5, 6, 9

. The nominal frequency at any case temperature, T

Minimum

417.925

Units

, IL, 3 dB bandwidth, f

dBm

VDC

1.0

2.0

°C

RFM P1237

test system with VSWR

0.303334

477.932

Typical

13,600

6,500

0.037

E-mail: info@rfm.com

http://www.rfm.com

RP1237-110499

5.7

2.3

+21

Resonator

418.0 MHz

versus T

RP1237

TO39-3 Case

SAW

Maximum

418.075

±75

152

8.0

2.6

, and C

1.2:1. Typically,

ppm/°C

ppm/yr

Page 1 of 2

Units

MHz

, may be

kHz

µH

°C

Related parts for RP1237

RP1237 Summary of contents

Page 1

... Complies with Directive 2002/95/EC (RoHS) The RP1237 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 fixed-frequency transmitters operating at 418.0 MHz. The RP1237 is designed specifically for remote-control and wireless security transmitters oper- ating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15 ...

Page 2

... Frequency (MHz) Millimeters Min Max Min A 9.40 B 3.18 C 2.50 3.50 0.098 D 0.46 Nominal E 5.08 Nominal F 2.54 Nominal G 2.54 Nominal H 1.02 J 1.40 0.055 E-mail: info@rfm.com http://www.rfm.com RP1237-110499 -50 -100 -150 -200 0 +20 +40 +60 + ° 200.0 100.0 0.0 -100.0 -200.0 -300.0 -400.0 -500.0 -600.0 -700 ...

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