RF1172 RFM, RF1172 Datasheet

Filters 433.92MHz Narrowband Receiver Front End

RF1172

Manufacturer Part Number

RF1172

Description

Filters 433.92MHz Narrowband Receiver Front End

Manufacturer

RFM

Type

SAW Filtersr

Datasheet

1.RF1172.pdf (2 pages)

Specifications of RF1172

Product

RF SAW Filters

Frequency

433.92 MHz

Package / Case

TO-39-3

Operating Temperature Range

- 40 C to + 85 C

Voltage Rating

30 V

Termination Style

Radial

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Electrical Characteristics

www.RFM.com

Notes:

• Ideal Front-End Filter for European Wireless Receivers

• Low-Loss, Coupled-Resonator Quartz Design

• Simple External Impedance Matching

• Rugged TO39 Hermetic Package

• Complies with Directive 2002/95/EC (RoHS)

The RF1172 is a low-loss, compact and economical surface-acoustic-wave (SAW) filter designed

to provide front-end selectivity in 433.92 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.

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 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.

Characteristic

Center Frequency at 25°C

Insertion Loss

3 dB Bandwidth

Rejection

Temperature

Frequency Aging

External Impedance

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

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

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

The frequency f

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

The turnover temperature, T

be calculated from: f = f

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.

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

One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.

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

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

E-mail: info@rfm.com

is defined as the midpoint between the 3dB frequencies.

[1 - FTC (T

Absolute Frequency

Tolerance from 433.92 MHz

at f

Ultimate

Operating Case Temp.

Turnover Temperature

Turnover Frequency

Freq. Temp. Coefficient

Absolute Value during the First Year

Series Inductance

Shunt Capacitance

, is the temperature of maximum (or turnover) frequency, f

- 21.4 MHz (Image)

- 10.7 MHz (LO)

- T

)

Sym

FTC

Δf

|fA|

Notes

1, 2

3, 4

. The nominal frequency at any case temperature, T

Minimum

500

-40

RFM RF1172

Typical

433.92

0.032

600

≤10

3.5

. Note that insertion loss, bandwidth,

433.92 MHz

SAW Filter

RF1172

TO39-3 Case

Maximum

±80

800

+85

5.0

RF1172 - 3/20/08

Units

ppm/°C

ppm/yr

Page 1 of 2

MHz

kHz

°C

, may

Related parts for RF1172

RF1172 Summary of contents

Page 1

... Rugged TO39 Hermetic Package • Complies with Directive 2002/95/EC (RoHS) The RF1172 is a low-loss, compact and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 433.92 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 ...

Page 2

... J (2 places) Millimeters Inches Min Max Min A 9.40 B 3.18 C 2.50 3.50 D 0.46 Nominal E 5.08 Nominal F 2.54 Nominal G 2.54 Nominal H 1.02 J 1.40 H 45° Max 0.370 0.125 0.098 0.138 0.018 Nominal 0.200 Nominal 0.100 Nominal 0.100 Nominal 0.040 0.055 Page RF1172 - 3/20/08 ...

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