RF1171 RF Monolithics, RF1171 Datasheet

RF1171

Manufacturer Part Number

RF1171

Description

Frequency = 418.0 ;; Description = RF Filter

Manufacturer

RF Monolithics

Datasheet

1.RF1171.pdf (2 pages)

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Notes:

RF Monolithics, Inc.

RFM Europe

•

The RF1171 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide

front-end selectivity in 418.0 MHz receivers.

10.7 MHz direct conversion and superregen. Typical applications of these receivers are wireless remote-

control and security devices operating in the USA under FCC Part 15.

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 ad-

vanced 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 stabil-

ity over a wide temperature range.

Electrical Characteristics

1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50

2. The frequency f

3. Unless noted otherwise, specifications apply over the entire specified operating temperature range.

4. The turnover temperature, 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 prolonged temperatures

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.

Nominal Frequency

Insertion Loss

3 dB Bandwidth

Rejection

Temperature

Frequency Aging

External Impedance

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

VSWR

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

be calculated from: f = f

above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.

Ideal Front-End Filter for Wireless Receiver in the UK and USA

Low-Loss, Coupled-Resonator Quartz Design

Simple External Impedance Matching

Rugged TO39 Hermetic Package

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f

Phone: (972) 233-2903

Phone: 44 1963 251383

is defined as the midpoint between the 3dB frequencies.

Characteristic

at f

Ultimate

Operating Case Temp.

Turnover Temperature

Turnover Frequency

Freq. Temp. Coefficient

Absolute Value during the First Year

Series Inductance

Shunt Capacitance

[1 - FTC (T

- 21.4 MHz (Image)

- 10.7 MHz (LO)

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

Tolerance from 418.0 MHz

- T

)

Receiver designs using this filter include superhet with

Fax: (972) 387-9148

Fax: 44 1963 251510

Sym

FTC

|fA|

Notes

1, 2

3, 4

6 Turns of 0.3 mm Insulated Copper, 1.9 mm ID

Minimum

417.920

. The nominal frequency at any case temperature, T

500

-35

RFM RF1171

Typical

0.032

600

E-mail: info@rfm.com

http://www.rfm.com

RF1171-082201

3.0

. Note that insertion loss, bandwidth,

SAW Filter

418.0 MHz

RF1171

TO39-3 Case

Maximum

418.080

±80

800

+85

5.5

test system with

ppm/°C

ppm/yr

Page 1 of 2

Units

MHz

kHz

°C

, may

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