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©2009 by RF Monolithics, Inc.

RF3210 - 6/19/09

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency at 25°C

1, 2

303.745

303.905

MHz

Center Frequency Tolerance from 303.825 MHz

±80

kHz

Insertion Loss

IL

1

1.7

3.0

dB

3 dB Passband

1, 2

500

700

800

kHz

Rejection

1

40

50

dB

15

35

Ultimate

60

Temperature

Operating Case Temp.

3, 4

-40

+85

°C

Turnover Temperature

10

25

40

Freq. Temp. Coefficient

FTC

0.032

Frequency Aging

Absolute Value during the First Year

|fA|

5

≤10

ppm/yr

1

80.3

Ω || 8.34 pF

91.4

Ω || 9.15 pF

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

RFM RF3210

TO39-3 Case

•

Ideal Front-End Filter for 303.825 MHz Wireless Receivers

•

Low-Loss, Coupled-Resonator Quartz Design

•

Simple External Impedance Matching

•

Rugged TO39 Hermetic Package

•

Complies with Directive 2002/95/EC (RoHS)

The RF3210 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed

to provide front-end selectivity in 303.825 MHz receivers. Receiver designs using this filter include

superheterodynes with 10.7 MHz or 500 kHz IF’s, direct conversions and superregeneratives.

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

greater than 40 dB, of the LO and image responses of superhet receivers with 10.7 MHz IF’s.

RFM’s advanced SAW design and fabrication technology is utilized to achieve high performance

and very low loss with simple external impedance matching (not included). Quartz construction

provides excellent frequency stability over a wide temperature range.

303.825 MHz

SAW Filter

RF3210

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

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

2.

3.

Unless noted otherwise, 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.

Pb