TOKEN LTM 455/450 Ceramic Filters Ceramic Filters for Communication Ceramic Filter for Communication (Murata CFUM/WM 455/450 Compatible) Preview Token ceramic filters for communication LTM 455/450 U/W series are miniaturized versions of the Murata CFU/ CFWS lines. These compact, highly selective characteristics are recommended for use in applications ranging from two-way radio to auxiliary filters in high class transceivers. These ultra-miniature versions consume approximately 40% less volume while still offering the same high performance filter characteristics. Version 2010 http://www.token.com.tw/ rfq token.com.tw 01 of 03 TOKEN LTM 455/450 Ceramic Filters Dimensions 2.5 2.7 6.5 9.5 45 ① ② 5E W ③ ① ② 3.5 1.0 ③ ④ ① Input ③④ Ground ② Output 1.9 0.9 ③④ ⑤ ① ② ③ ④ ② ⑤ 4.3 6.2 U 6.2 5E ① Input ③④⑤ Ground ② Output 3.5 45 0.7 . 1.0 2.4 1.8 0.8 6.5 4.3 6.5 Technical Characteristics LTM455BU LTM455EU LTM455HU 10 20 30 40 50 60 410 430 450 460 480 0 (dB) Attenuation (dB) Attenuation 0 500 LTM455BW LTM455EW LTM455HW 10 20 30 40 50 60 410 Frequency (KHz) Part Number LTM455AU LTM455BU LTM455CU LTM455DU LTM455EU LTM455FU LTM455GU LTM455HU LTM455IU LT M455HTU LTM455AW LTM455BW LTM455CW LTM455DW LTM455EW LTM455FW LTM455GW LTM455HW LTM455IW LT M455HTW 430 450 460 480 500 Frequency (KHz) 40dB Band Width (kHz) max LTM455 U 50dB Band Width (kHz) max LTM455 W Pass Insertion Center Band Loss Frequency Ripple (dB) (kHz) (dB) max max 6dB Band Width (kHz) min 455±2.0 455±2.0 455±2.0 455±1.5 455±1.5 455±1.5 455±1.5 455±1.0 455±1.0 4 4 4 4 6 6 6 6 6 2 2 2 2 2 2 2 2 2 ±17.5 ±15 ±12.5 ±10 ±7.5 ±6 ±4.5 ±3 ±2 ±40 ±30 ±24 ±20 ±15 ±12.5 ±10 ±9 ±7.5 ±35 ±30 ±24 ±20 ±15 ±12.5 ±10 ±9 ±7.5 455±1.0 6 2 ±3 ±9 ±9 Spurious Attenuation fo±100kHz (dB) min (LTM 455 U) 28 28 28 28 28 28 28 28 28 (LTM 455 W) 40 40 40 40 40 40 40 40 40 35 60 Input / Output Impedance (Ω) 1000 1500 1500 1500 1500 2000 2000 2000 2000 2000 Note: Center frequency 450KHz is also available. 02 of 03 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN LTM 455/450 Ceramic Filters Test Circuit R1 ① ② R1 LTM455U Rg ~ ③ ② ① LTM455W ④ Rg RF V.M S.S.G Rg+ R1= R2=Input/Output Impedance ~ ③ ⑤ ④ R2 S.S.G RF V.M Rg+ R1= R2=Input/Output Impedance How to Order LTM455BU P Part Number Package Back to 1st Page - Ceramic Filters for Communication - LTM 455/450 Version 2010 http://www.token.com.tw/ rfq token.com.tw 03 of 03