SAW Device WF893C0953CH For Short-range Wireless ■ Features ● SAW filter for RFID. ● A filter with excellent temperature stability. ● Compact and light. ● High electric power-resistant characteristics. (+23 dBm) ■ Specifications Model WF893C0953CH Item min. typ. Nominal frequency : f0 (MHz) − 953 − Minimum insertion loss (IL)(dB) − 4.0 5.0 3-dB passband width (MHz) In-band ripple Guaranteed attenuation (dB) (from the minimum insertion loss) ±1.0 ±1.4 − f0±1 MHz (dB) – 0.7 1.0 f0–50 MHz to f0–8 MHz 30 38 – f0–8 MHz to f0–3 MHz 15 20 – f0+3 MHz to f0+25 MHz 15 21 – f0+25 MHz to f0+50 MHz 30 45 – Operating temperature range (°C) –30 to +60 Terminating impedance (Ω) 820//–1.3 pF ■ Characteristics ■ Dimensions mm 3.8±0.2 Others 1 5 1.1±0.2 GND INPUT OUTPUT 0.8 0.47 0.8 0.3 CENTER(MHz) 953.0000 SPAN(MHz) 10.000 6 5 (0.8) 2.3 10.000 dB/ 1.4 2.6 2.0±0.2 CH1 A/R LOG MAG REF –4.000 dB 0.3 7 1.4 4 3-1.8±0.2 8 CH1 0.8 0.47 0.8 1.4 2 2.000 dB/ Land pattern (Typical) 7-1.0±0.2 16-(0.1) 1 8-0.6±0.2 3 CH1 A/R LOG MAG REF –4.000 dB Terminal land connections 3.8±0.2 2.54±0.2 max. 0.4 ■ Matching Circuit IN 50Ω 11nH 1 5 11nH OUT SAW 0.5pF 6.5pF 0.5pF 6.5pF 50Ω 2 3 4 6 7 8 CH1 - 33 - CENTER(MHz) 953.0000 SPAN(MHz) 100.000 12A_0903_WF893C0953CH_e