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©2008 by RF Monolithics, Inc.

RF3336C - 3/21/08

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency @ 25°C

Absolute Frequency

1, 2

868.35

MHz

Tolerance from 868.35 MHz

∆f

C

±125

kHz

Insertion Loss

IL

1

2.6

4.0

dB

3 dB Bandwidth

1, 2

500

700

800

kHz

Rejection

1

30

40

dB

15

30

Ultimate

80

Temperature

Operating Case Temp.

3, 4

-40

+85

°C

Turnover Temperature

15

25

40

°C

Turnover Frequency

MHz

Freq. Temp. Coefficient

FTC

0.032

Frequency Aging

Absolute Value during the First Year

|fA|

5

<±10

ppm/yr

External Impedance

Input Series Inductance

1

3.3

nH

Input Shunt Inductance

15

nH

Output Series Inductance

10

nH

Output Shunt Inductance

5.1

pF

Standard Reel Quantity

Reel Size 7 inch

500 Pieces/Reel

Reel Size 13 inch

3000 Pieces/Reel

Lid Symbolization (Y=year, WW=week, S=shift)

673//YWWS

• Ideal Front-End Filter for European Wireless Receivers

• Low-Loss, Coupled-Resonator Quartz Design

• Simple External Impedance Matching

• Complies with Directive 2002/95/EC (RoHS)

The RF3336C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide

front-end selectivity in 868.35 MHz receivers. Receiver designs using this filter include superhet with

10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are

wireless remote-control and security devices operating in Europe under ETSI I-ETS 300 220, in Germany

under FTZ 17 TR 2100, in the United Kingdom under DTI MPT 1340 (for automotive only), in France under

PTT Specifications ST/PAA/TPA/AGH/1542, and in Scandinavia.

This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater

than 30 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s

advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss

with simple external impedance matching.

868.35 MHz

SAW Filter

RF3336C

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50

Ω test system with

VSWR

≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f

width and passband shape are dependent on the impedance matching component values and quality.

2.

3.

Where noted specifications apply over the entire specified operating temperature range.

4.

5.

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

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

6.

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

7.

One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.

8.

All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.

SM5050-8 Case

5 x 5

Pb