RF1301【PDF 1/2 页】SAW FILTER 499.25MHZ TO39-3

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RF1301

Ideal Front-End Filter for European Wireless Receivers

Low-Loss, Coupled-Resonator Quartz Design

Simple External Impedance Matching

499.250 MHz

Rugged TO39 Hermetic Package

Complies with Directive 2002/95/EC (RoHS)

SAW Filter

The RF1301 is a low-loss, compact and economical surface-acoustic-wave (SAW) filter designed to provide

front-end selectivity in 499.250 MHz receivers. Typical applications of these FSK receivers are wireless

remote-control and security devices operating in Europe.

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.

Absolute Maximum Ratings

Rating

Value

Units

Incident RF Power

DC Voltage Between Any Two Pins (Observe ESD Precautions)

Case Temperature

+13

±30

-40 to +85

dBm

VDC

°C

TO39-3 Case

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Nominal Frequency

Insertion Loss

4 dB Passband

3 dB Reject Band

Rejection

at f C ±1.50 MHz

f C

BW 3

2, 4, 5, 6

3, 4, 7

2, 3, 4, 7

±30

499.250

4.0

MHz

kHz

at f C ±6.0 MHz

at f C ±50 MHz

Temperature

Operating Case Temperature

T C

-40

+85

°C

Turnover Temperature

Turnover Frequency

Frequency Temperature Coefficient

T O

f O

FTC

3, 7, 8

f C

0.032

°C

MHz

ppm/°C 2

Frequency Aging

External Impedance

Absolute Value during the First Year

Series Inductance

Shunt Capacitance

IfAI

1, 7

5-18

ppm/yr

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

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

RFM RF1301

Typical test circuit is shown for TO-39 RF filters.

Passband and reject bands are specified in reference to f C .

All characteristics are specified over the operating temperature range and typical aging for 10 years.

Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture. Note that insertion loss, bandwidth, and passband

shape are dependent on the impedance matching component values and quality. Demonstration circuits are available for confirmation of device performance.

One or more of the following U.S. Patents apply: 4,454,488; 4,616,197; and other pending.

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

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

The turnover temperature, T O , is the temperature of maximum (or turnover) frequency, f o . The nominal frequency at any case temperature, T C , outside the

operating temperature range may be calculated from: f = f o [1 - FTC (T O - T C ) 2 ].

www.RFM.com E-mail: info@rfm.com

?2008 by RF Monolithics, Inc.

Page 1 of 2

RF1301 - 3/28/08

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