器件名称:
RF1211D
功能描述:
315.0 MHz SAW Filter
文件大小:
104.3KB 共3页
简 介:
RF1211D 315.0 MHz SAW Filter Ideal Front-End Filter for Domestic Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Pb Complies with Directive 2002/95/EC (RoHS) The RF1211D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 315.0 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 (especially for automotive keyless entry) operating in the USA under FCC Part 15, in Canada under RSS-210, and in Italy 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. Electrical Characteristics Characteristic Center Frequency at 25°C Insertion Loss 3 dB Bandwidth Rejection Attenuation: (relative to ILmin) 10 - 295 MHz 295 - 305 MHz 305 - 310 MHz 310 - 313 MHz 313 - 314 MHz 316 - 320 MHz 320 - 325 MHz 325 - 335 MHz 335 - 600 MHz 600 - 1000 MHz Temperature Frequency Aging Impedance @ fc Freq. Temp. Coefficient Absolute Value during the First Year Input ZIN=RINllCIN Output ZOUT=ROUTllCOUT Lid Symbolization (Y=year WW=we……
