RO2021 RFM [RF Monolithics, Inc], RO2021 Datasheet

RO2021

Manufacturer Part Number

RO2021

Description

418.05 MHz SAW Resonator

Manufacturer

RFM [RF Monolithics, Inc]

Datasheet

1.RO2021.pdf (2 pages)

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RF Monolithics, Inc.

RFM Europe

•

The RO2021 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

418.050 MHz. The RO2021 is designed specifically for remote control and wireless security AM transmitters

operating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.

Absolute Maximum Ratings

Electrical Characteristics

CW RF Power Dissipation (See: Typical Test Circuit)

DC Voltage Between Any Two Pins (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 418.05 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 418.050 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.

1.2:1). The shunt induc-

at f

. Typically, f

Fax: (972) 387-9148

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

2, 5, 6

5, 6, 7

6, 7, 8

5, 6, 9

1, 6

2, 7

. The nominal frequency at any case temperature, T

Units

, IL, 3 dB bandwidth, f

dBm

VDC

Minimum

417.975

°C

[1 - FTC (T

1.0

2.1

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

RFM 2021

-T

E-mail: info@rfm.com

http://www.rfm.com

RO2021-102199

141.965

1.02095

)

Typical

11,300

2,800

0.037

]. Typically, oscillator T

2.5

2.4

2.1

+15

418.05 MHz

versus T

Resonator

RO2021

TO39-3 Case

SAW

, and C

Maximum

418.125

±75

124

7.0

2.7

is 20°C less than

, may be calcu-

ppm/°C

ppm/yr

Page 1 of 2

Units

MHz

kHz

µH

°C

is the

Related parts for RO2021

RO2021 Summary of contents

Page 1

... Complies with Directive 2002/95/EC (RoHS) The RO2021 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 418.050 MHz. The RO2021 is designed specifically for remote control and wireless security AM transmitters operating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15 ...

Page 2

... D (3 places places) Millimeters Min Max A 9.40 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 RO2021-102199 -50 -100 -150 -200 0 +20 +40 +60 + ° 45° Inches Min Max 0.370 0.125 0.098 0.138 ...

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