RO2044 RFM [RF Monolithics, Inc], RO2044 Datasheet

RO2044

Manufacturer Part Number

RO2044

Description

318.00 M SAW Resonator

Manufacturer

RFM [RF Monolithics, Inc]

Datasheet

1.RO2044.pdf (2 pages)

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RF Monolithics, Inc.

RFM Europe

•

The RO2044 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 transmitters operating at

or near 318 MHz. The RO2044 is designed specifically for remote-control and wireless security AM transmit-

ters operating in the USA under FCC Part 15, in Canada under Doc RSS-210, and in Australia.

Absolute Maximum Ratings

Electrical Characteristics

CW RF Power Dissipation

DC Voltage Between Terminals (Observe ESD Precautions)

Case Temperature

Frequency (+25 °C)

Insertion Loss

Quality Factor

Temperature Stability

Frequency Aging

DC Insulation Resistance between Any Two Pins

RF Equivalent RLC Model

Test Fixture Shunt Inductance

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

Frequency aging is the change in f

The center frequency, f

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

Typically, equipment designs utilizing this device require emissions testing and

Unless noted otherwise, case temperature T

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

Designed for 318 MHz Transmitter Applications

Low Series Resistance

Quartz Stability

Rugged, Hermetic, Low-Profile TO39 Case

Complies with Directive 2002/95/EC (RoHS)

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.

with the resonator in the 50

tance, L

TOR

4,616,197 and others pending.

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

to change without notice.

Notes:

or f

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

TRANSMITTER

TEST

, is tuned for parallel resonance with C

Phone: (972) 233-2903

Phone: 44 1963 251383

is less than the resonator f

, is measured at the minimum insertion loss point, IL

Characteristic

test system (VSWR

Rating

Nominal Frequency

Tolerance from 318.000 MHz

Unloaded Q

Turnover Temperature

Turnover Frequency

Frequency Temperature Coefficient

Absolute Value during the First Year

Motional Resistance

Motional Inductance

Motional Capacitance

Pin 1 to Pin 2 Static Capacitance

Transducer Static Capacitance

with time and is specified at +65°C or less.

Loaded Q

= +25°C±2°C.

Preliminary

1.2:1). The shunt induc-

at f

. Typically, f

Fax: (972) 387-8148

Fax: 44 1963 251510

OSCILLA-

MIN

Sym

FTC

|fA|

TEST

-40 to +85

Value

±30

Derived mathematically from one or more of the following directly measured

Turnover temperature, T

This equivalent RLC model approximates resonator performance near the reso-

parameters: f

quency, f

lated from: f = f

the specified resonator T

nant frequency and is provided for reference only. The capacitance C

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

approximately 0.25 pF to C

2, 3, 4, 5

5, 6, 7, 9

Notes

5, 6, 9

2, 5, 6

5, 6, 7

6, 7, 8

1, 6

2, 7

. The nominal frequency at any case temperature, T

, IL, 3 dB bandwidth, f

Units

Minimum

dBm

VDC

317.900

°C

[1 - FTC (T

RFM // RO2044 // YWWS##

1.0

2.9

, is the temperature of maximum (or turnover) fre-

-T

E-mail: info@rfm.com

http://www.rfm.com

RO2044-082802

Typical

160.269

1.56292

)

10400

0.037

2400

]. Typically, oscillator T

2.4

3.2

3.0

+4.2

318.00 MHz

versus T

Resonator

RO2044

TO39-3 Case

SAW

, and C

Maximu

318.100

±100

5.0

3.6

is 20°C less than

, may be calcu-

ppm/°C

ppm/yr

Units

Page 1 of 2

MHz

kHz

µH

°C

is the

Related parts for RO2044

RO2044 Summary of contents

Page 1

... Complies with Directive 2002/95/EC (RoHS) The RO2044 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 transmitters operating at or near 318 MHz. The RO2044 is designed specifically for remote-control and wireless security AM transmit- ters operating in the USA under FCC Part 15, in Canada under Doc RSS-210, and in Australia ...

Page 2

... D (3 places places) Millimeters Min Max A 9.30 B 3.18 C 2.50 3.50 D 0.46 Nominal E 5.08 Nominal F 2.54 Nominal G 2.54 Nominal H 1.02 J 1.40 E-mail: info@rfm.com http://www.rfm.com RO2044-082802 -50 -100 -150 -200 0 +20 +40 +60 + ° 45° Inches Min Max 0.366 0.125 0.098 0.138 ...

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