RO2156A RFM [RF Monolithics, Inc], RO2156A Datasheet

RO2156A

Manufacturer Part Number

RO2156A

Description

868.95 MHz SAW Resonator

Manufacturer

RFM [RF Monolithics, Inc]

Datasheet

1.RO2156A.pdf (2 pages)

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RF Monolithics, Inc.

RFM Europe

•

The RO2156A 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 operat-

ing at 868.95 MHz. This SAW is designed specifically for remote-control and wireless security transmitters

operating under ETSI-ETS 300 220 in Europe and under FTZ 17 TR 2100 in Germany.

Absolute Maximum Ratings

Electrical Characteristics

CW RF Power Dissipation

DC Voltage Between Terminals

Case Temperature

Soldering Temperature (10 seconds / 5 cycles max.)

Frequency at +25°C Nominal Frequency

Tolerance from 868.95 MHz

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 (in Addition to Lot and/ or Date Code)

Ideal for European 868.95 MHz Transmitters

Very Low Series Resistance

Quartz Stability

Surface-Mount Ceramic Case with 21 mm

Complies with Directive 2002/95/EC (RoHS)

Lifetime (10 year) frequency aging.

The center frequency, f

inductance, L

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 gov-

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

Unless noted otherwise, case temperature T

tions.

The design, manufacturing process, and specifications of this device are sub-

ject to change without notice.

Notes:

MIN

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

, with the resonator in the 50

TEST

Phone: (972) 233-2903

Phone: 44 1963 251383

, is tuned for parallel resonance with C

Characteristic

, is measured at the minimum insertion loss point,

Rating

Unloaded Q

Turnover Temperature

Turnover Frequency

Frequency Temperature Coefficient

Absolute Value during the First Year

Motional Resistance

Motional Inductance

Motional Capacitance

Shunt Static Capacitance

Loaded Q

test system (VSWR

RO2156A-1

RO2156A-2

RO2156A-1

RO2156A-2

= +25°C±2°C for all specifica-

RO2156A

at f

1.2:1). The shunt

Fax: (972) 387-8148

Fax: 44 1963 251510

Footprint

Sym

FTC

|fA|

TEST

-40 to +85

Value

±30

260

5, 6, 7, 9

2,3,4,5

Notes

2,5,6

5,6,7

6,7,8

Derived mathematically from one or more of the following directly measured

parameters: f

Turnover temperature, T

quency, f

culated from: f = f

This equivalent RLC model approximates resonator performance near the

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

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

low frequency (10 MHz) with a capacitance meter. The measurement

includes parasitic capacitance with “NC” pads unconnected. Case parasitic

capacitance is approximately 0.05pF. Transducer parallel capacitance can be

calculated as: C

2, 7

. The nominal frequency at any case temperature, T

Units

dBm

VDC

Minimum

868.875

868.850

°C

, IL, 3 dB bandwidth, f

-75

1.0

[1 - FTC (T

0.05 pF.

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

197

E-mail: info@rfm.com

http://www.rfm.com

RO2156A_RO2156A-1_RO2156A-2 _012202

11.4295

11.5679

Typical

38,997

81.637

4,000

0.032

-T

<±10

0.41

1.1

2.9

868.95 MHz

RO2156A-1

RO2156A-2

)

Resonator

versus T

RO2156A

SM-2 Case

SAW

Maximum

869.025

869.175

869.050

, and C

+225

±100

±75

2.0

ppm/°C

, may be cal-

ppm/yr

Page 1 of 2

Units

MHz

kHz

µH

°C

Related parts for RO2156A

RO2156A Summary of contents

Page 1

... Surface-Mount Ceramic Case with 21 mm • Complies with Directive 2002/95/EC (RoHS) The RO2156A 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 operat- ing at 868.95 MHz. This SAW is designed specifically for remote-control and wireless security transmitters operating under ETSI-ETS 300 220 in Europe and under FTZ 17 TR 2100 in Germany ...

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 RO2156A_RO2156A-1_RO2156A-2 _012202 + 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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