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RF3701E - 12/14/10

•

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 RF3701E is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter

designed to provide front-end RF selectivity in 433.92 MHz receivers. Receiver designs using

this filter include superheterodyne with 10.7 MHz or lower intermediate frequencies, plus direct

conversion and superregeneratives.

433.92 MHz

SAW Filter

RF3701E

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

the impedance matching component values and quality.

2.

3.

Where noted specifications apply over the entire specified operating temperature range of -40 to 90°C.

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.

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.

9.

Tape and Reel Standard for ANSI / EIA 481.

SM3030-8 Case

3.0 x 3.0

Pb

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency @ 25°C

1, 2, 3

433.92

MHz

Insertion Loss

1, 3

2.5

3.2

dB

3 dB Bandwidth

1, 2, 3

650

750

850

kHz

Passband Ripple, 433.72 to 434.12 MHz

0.5

1.0

Attenuation

10 to 414 MHz

1, 3

44

47

dB

414 to 424 MHz

42

45

424 to 431 MHz

27

30

431 to 432 MHz

17

20

432 to 433 MHz

14

17

434.92 to 442 MHz

13

16

442 to 550 MHz

33

37

550 to 1000 MHz

47

50

Temperature

Freq. Temp. Coefficient

FTC

3, 4

0.032

Frequency Aging

Absolute Value during the First Year

|fA|

5

<10

ppm/yr

1

3530

Ω || 2.42 pF

3330

Ω || 2.42 pF

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

940 // YWWS

Standard Reel Quantity

Reel Size 7 Inch

9

500 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel