®

Preliminary

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

Page 1 of 3

RFM Europe

Phone: 44 1963 251383

Fax: 44 1963 251510

http://www.rfm.com

©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

RF3355C-071907

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency at 25°C

Absolute Frequency

1, 2

390.0

MHz

Tolerance from 390.0 MHz

∆f

C

1, 2

±100

kHz

Minimum Insertion Loss 389.82 -390.22 MHz

1

2.0

4.0

dB

389.77 -390.2

1

1.5

3.0

dB

389.71 -390.26

2.0

6.0

1

500

1100

kHz

0 - 345 MHz

1

45

50

dB

345 - 370 MHz

40

45

370 - 388.94 MHz

15

25

391.5 - 410 MHz

8

13

410 - 475 MHz

35

45

475 - 1000 MHz

45

55

1

344

Ω // 4.9pF

1

344

Ω // 4.9pF

Turnover To

3, 4

25

°C

Frequency Aging

Absolute Value During the First Year

3, 4

≤10 ppm/yr Typical

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

736 // YWWS

Standard Reel Quantity

Reel Size 7 Inch

500 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel

•

Ideal Front-End Filter for Wireless Receivers

•

Low-Loss, Coupled-Resonator Quartz Design

•

Simple External Impedance Matching

•

Complies with Directive 2002/95/EC (RoHS)

The RF3355C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-

vide front-end selectivity in 390 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 wire-

less remote-control and security devices.

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

than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s ad-

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

simple external impedance matching.

390.0 MHz

SAW Filter

RF3355C

SM5050-8 Case

5 x 5

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.

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

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.

Pb