RF1171

Features:

• 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




Specifications

Characteristic Symbol Minimum Typical Maximum Units Nominal Frequency fc 417.920 418.080 MHz Tolerance from 418.0 MHz ?fc 80 dB Insertion Loss IL 3.0 5.5 dB 3 dB Bandwidth BW3 500 600 800 kHz Rejection at fC - 21.4 MHz (Image) 40 50 dB at fC - 10.7 MHz (LO) 15 30 dB Ultimate 80 dB Temperature Operating Case Temp. TC -35 +85 C Turnover Temperature TO 15 25 35 C Turnover Frequency fO fC MHz Freq. Temp. Coefficient FTC 0.032 ppm/C2 Frequency Aging Absolute Value during the First Year |fA| ?10 ppm/yr External Impedance Series Inductance L 6 Turns of 0.3 mm Insulated C nH Shunt Capacitance C 12 pF

Rating	Value	Units
Incident RF Power	+13	dBm
DC Voltage Between Any Two Pins (Observe ESD Precautions	±30	VDC
Case Temperature	-40 to +85	°C

Description

Ideal Front-End Filter RF1171 for Wireless Receiver in the UK and USA Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Rugged TO39 Hermetic Package Complies with Directive 2002/95/EC (RoHS)

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. Receiver designs using this filter include superhet with 10.7 MHz direct conversion of RF1171 and superregen. Typical applications of these receivers are wireless remotecontrol and security devices operating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.

This coupled-resonator filter (CRF)RF1171  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 RF1171 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.