RO2073A-1 RFM [RF Monolithics, Inc], RO2073A-1 Datasheet

RO2073A-1

Manufacturer Part Number

RO2073A-1

Description

315.0 MHz SAW Filter

Manufacturer

RFM [RF Monolithics, Inc]

Datasheet

1.RO2073A-1.pdf (2 pages)

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RF Monolithics, Inc.

RFM Europe

•

The RO2073A-1 is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount, ceramic

case. It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters

operating at 315 MHz. This SAW is designed specifically for AM transmitters in automotive-keyless-entry

applications operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.

Absolute Maximum Ratings

Electrical Characteristics

CW RF Power Dissipation (See: Typical Test Circuit)

DC voltage Between Terminals (Observe ESD Precautions.)

Case Temperature

Soldering Temperature (10 seconds / 5 cycles max.)

Center Frequency at +25 °C

Insertion Loss

Quality Factor

Temperature Stability

Frequency Aging

DC Insulation Resistance between Any Two Terminals

RF Equivalent RLC Model

Test Fixture Shunt Inductance

Lid Symbolization

Frequency aging is the change in f

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

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

quent years.

The center frequency, f

inductance, L

CILLATOR

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

4,616,197.

Typically, equipment utilizing this device requires emissions testing and govern-

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

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

Ideal for 315 MHz Automotive-Keyless-Entry Transmitters

Very Low Series Resistance

Quartz Stability

Surface-Mount Ceramic Case with 21 mm

Complies with Directive 2002/95/EC (RoHS)

MIN

Notes:

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

, with the resonator in the 50

or f

TRANSMITTER

TEST

, IL, 3 dB bandwidth, f

Phone: (972) 233-2903

Phone: 44 1963 251383

, is tuned for parallel resonance with C

, is measured at the minimum insertion loss point,

is approximately equal to the resonator f

Characteristic

Rating

Absolute Frequency

Tolerance from 315.000 MHz

Unloaded Q

Turnover Temperature

Turnover Frequency

Frequency Temperature Coefficient

Absolute Value during the First Year

Motional Resistance

Motional Inductance

Motional Capacitance

Shunt Static Capacitance

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

test system (VSWR

versus T

Loaded Q

= +25°C±2°C.

, and C

at f

1.2:1). The shunt

. Typically, f

Fax: (972) 387-8148

Fax: 44 1963 251510

Footprint

OS-

Sym

FTC

TEST

-40 to +85

Value

±30

260

Turnover temperature, T

quency, f

lated from: f = f

equal to the specified resonator T

This equivalent RLC model approximates resonator performance near the reso-

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

static (nonmotional) capacitance between the two terminals measured at low

frequency (10 MHz) with a capacitance meter. The measurement includes para-

sitic capacitance with "NC” pads unconnected. Case parasitic capacitance is

approximately 0.05 pF. Transducer parallel capacitance can by calculated as:

2,3,4,5

Notes

5, 7, 9

5, 6, 9

2,5,6

5,6,7

6,7,8

2, 7

- 0.05 pF.

. The nominal frequency at any case temperature, T

Units

dBm

VDC

Minimum

314.925

°C

[1 - FTC (T

1.0

2.0

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

-T

111

E-mail: info@rfm.com

http://www.rfm.com

RO2073A-1-061901

)

127.450

2.00299

Typical

15,300

2,100

0.032

]. Typically oscillator T

110

1.3

2.3

RO2073A-1

Resonator

315.0 MHz

SM-2 Case

SAW

Maximum

315.075

±75

2.2

2.6

is approximately

, may be calcu-

ppm/°C

ppm/yr

Page 1 of 2

Units

MHz

kHz

µH

°C

is the

Related parts for RO2073A-1

RO2073A-1 Summary of contents

Page 1

... Surface-Mount Ceramic Case with 21 mm • Complies with Directive 2002/95/EC (RoHS) The RO2073A true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount, ceramic case. It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating at 315 MHz. This SAW is designed specifically for AM transmitters in automotive-keyless-entry applications operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy ...

Page 2

... E 0.83 1.20 0.033 F 1.16 1.53 0.046 G 0.94 1.10 0.037 H 0.43 0.59 0.017 K 0.43 0.59 0.017 M 5.08 5.33 0.200 N 0.38 0.64 0.015 P 3.05 3.30 0.120 E-mail: info@rfm.com http://www.rfm.com RO2073A-1-061901 + 0.05 pF *Case Parasitics -50 -100 -150 -200 0 +20 +40 +60 + ° Inches Max 0.236 0.157 0.085 0.043 0.047 0.060 0.043 0.023 0.023 0.210 ...

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