RF3336C - RFM (RF Monolithics, Inc.)

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Electrical Characteristics

Characteristic Sym Notes Minimum Typical Maximum Units

Center Frequency @ 25°C Absolute Frequency fC1, 2 868.35 MHz

Tolerance from 868.35 MHz ∆fC±125 kHz

Insertion Loss IL 1 2.6 4.0 dB

3 dB Bandwidth BW31, 2 500 700 800 kHz

Rejection at fc - 21.4 MHz (Image)

30 40

dBat fc - 10.7 MHz (LO) 15 30

Ultimate 80

Temperature Operating Case Temp. TC

3, 4

-40 +85 °C

Turnover Temperature T O15 25 40 °C

Turnover Frequency fOfcMHz

Freq. Temp. Coefficient FTC 0.032 ppm/°C2

Frequency Aging Absolute Value during the First Year |fA| 5 <±10 ppm/yr

External Impedance Input Series Inductance L1

3.3 nH

Input Shunt Inductance L215 nH

Output Series Inductance L310 nH

Output Shunt Inductance C15.1 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.

868.3 5 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, fc. Note that insertion loss and band-

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

2. The frequency fc is defined as the midpoint between the 3dB frequencies.

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

4. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may

be calculated from: f = fo[1 - FTC (To-T

)

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

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Input

Output

10nH 1.0nH

15.0nH

Absolute Maximum Ratings

Rating Value Units

Input Power Level 10 dBm

DC V oltage 12 VDC

S torage Temperature -40 to +85 °C

Soldering Temperature (10 seconds / 5 cycles max.) 260 °C

Pin Connection

1 Input

2 Ground

3 Output Return

4 C ase Ground

5Output

6 Ground

7 Input Return

8 C ase Ground

Matching Circuit to 50Ω

Electrical Connections

Dimension mm Inches

Min Nom Max Min Nom Max

A4.8 5.0 5.2 0.189 0.197 0.205

B4.8 5.0 5.2 0.189 0.197 0.205

C1.7 0.067

D2.08 0.082

E1.17 0.046

F0.64 0.025

G2.39 2.54 2.69 0.094 0.100 0.106

Case Dimen sions