RF1181D

RF1181D Ideal Front-End Filter for 916.5 MHz Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) Pb 916.5 MHz SAW Filter The RF1181D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 916.5 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remote-control and security, data telemetry, and meter reading devices operating in the USA under FCC Part 15 and in Canada under DoC RSS-210. 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). SM3838-8 Case 3.8 x 3.8 Electrical Characteristics Characteristic Center Frequency at 25°C Insertion Loss 3 dB Bandwidth Rejection (Attenuation: relative to Min IL:) 10 to 895 MHz 895 to 906 MHz 906 to 910 MHz 922 to 925 MHz 925 to 933 MHz 933 to 940 MHz 940 to 1100 MHz Temperature Frequency Aging Impedance @ fC Standard Reel Quantity Standard Reel Quantity Freq. Temp. Coefficient Absolute Value during the First Year Input ZIN = RIN/CIN Output ZOUT = ROUT/COUT ...