RF1172D

Features:

• 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)¹⁰




Specifications

Characteristic Symbol Minimum Typical Maximum Units Center Frequency at 25C Absolute Frequency fc 433.92 MHz Insertion Loss (433.760 - 434.080) ILMIN 1.6 2.5 dB 3 dB Bandwidth BW3 500 600 800 kHz Rejection Attenuation: (relative to ILmin) 10 - 414 MHz 50 55 dB 414 - 424 MHz 45 50 dB 424 - 431 MHz 30 34 dB 431 - 432 MHz 18 22 dB 432 - 433 MHz 12 17 dB 434.92 - 442 MHz 16 19 dB 442 - 550 MHz 40 45 dB 550 - 1000 MHz 50 55 dB Temperature Freq. Temp. Coefficient FTC 0.032 ppm/C2 Frequency Aging Absolute Value during the First Year |fA| ?10 ppm/yr Impedance @ fc Input ZIN = RINllCIN ZIN 1428Ohm // 111.5pf Output ZOUT = ROUTllCOUT ZOUT 961Ohm // 111.8pf

Rating	Value	Unit
Input Power Level	10	dBm
DC Voltage	12	VDC
Storage Temperature	-40 to +125	°C
Operable Temperature Range	-40 to +125	°C
Soldering Temperature (10 seconds / 5 cycles max.)	260	°C

Description

Ideal Front-End Filter RF1172D for European Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS)10

The RF1172D 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 RF1172D 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 RF1172D (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 of RF1172D is utilized to achieve high performance and very low loss with simple external impedance matching.