LTU455HT

Specify Ceramic Filter LTU Series 455kHz or 450kHz Ceramic Filters 8 7 21 8.2 3 2.7 4 To take the best advantage of the safety feature of ceramic filters, connect output to anIF amplifier through a DC cut capacitor. Avoid directly applying DC to output end of ceramic filters (Between 5 & 2,3,4) Pin Connections 4.3 1 = Input 2 = Ground 3 = Output FEATURES High Selectivity Low Cost Wide Range of bandwidths Available Industry Standard Outline & Pinout SPECIFICATION APPLICATIONS Communications Equipment Insertion Pass Band 6 dB 40 dB Part Centre Loss Ripple Bandwidth Bandwidth Numb er Freq (M Hz) (dB Max) (dB Max) (kHz Min) (kHz Min) LTU455B2 455 +/ -2.0 4 2 + / - 15 .0 +/ -30.0 LTU455C2 455 +/ -2.0 4 2 + / - 12 .5 +/ -24.0 LTU455D2 455 +/ -1.5 4 2 + / - 10 .0 +/ -20.0 LTU455E2 E Q455 +/ -1.5 Y C H A 6 A C T E R I S T I C+ / - 7 .5 2 + / - 15 .0 FR UENC R S LTU455F2 455 +/ -1.5 6 2 + / - 6 .0 + / - 12 .5 LTU455G2 455 +/ -1.5 6 2 + / - 4 .5 + / - 10 .0 LTU455H2 455 +/ -1.0 6 2 + / - 3 .0 + / - 9 .0 LTU455I2 455 +/ -1.0 6 2 + / - 2 .0 + / - 7 .5 LTU455HT 455 +/ -1.0 6 2 + / - 3 .0 + / - 9 .0 Frequency Characteristics Test Circuit 0 Stopband Att. + / -100kHz (dB M in ) 27 27 27 27 27 25 25 25 35 Input/Output Impedence ( ) 1500 1500 1500 1500 2000 2000 2000 2000 2000 1 R1 LTU 3 Attenuation (dB) 10 20 LTU 455B2 LTU 455E2 LTU 455H2 2 30 Rg R2 C 40 RF V.M S.S.G 50 60 400 410 420 430 440 450 460 470 480 490 500 Freq (kHz) Rg+R1+R2=input/Output Impedence C=10pF (Including strays and input/output capacitance of RF Voltmeter www.aelcrystals.co.uk quartz based frequency control components Order Hotline +44 1293 524245 44 www.aelcrystals.co.uk sales@aelcrystals.co.uk Specify Ceramic Filter LTW33 Series 450 kHz & 455kHz Ceramic Filters 7 11.3 2.9 2.9 2.6 Pin Connections 4 5 3 2 1 4.3 33-455D 2.0 1 = Input 2 = Ground 3 = Ground 4 = Ground 5 = Output To take the best advantage of the safety feature of ceramic filters, connect output to anIF amplifier through a DC cut capacitor. Avoid directly applying DC to output end of ceramic filters (Between 5 & 2,3,4) FEATURES High Selectivity Low Cost Wide Range of bandwidths Available Industry Standard Outline SPECIFICATION Insertion Pass Band Part Centre Loss Ripple Numb er Freq (M Hz) (dB Max) (dB Max) LTW33-455B 455 +/ -2.0 4 2 LTW33-455C 455 +/ -2.0 4 2 LTW33-455D 455 +/ -1.5 4 2 LTW33-455E Q U 455 +/ -1.5 C H A R 6 C T E R I S T I C 2 FRE ENCY A LTW33-455F 455 +/ -1.5 6 2 LTW33-455G 455 +/ -1.5 6 2 LTW33-455H 455 +/ -1.0 6 2 LTW33-455I 455 +/ -1.0 6 2 LTW33-455HT 455 +/ -1.0 6 2 Frequency Characteristics 6 dB Bandwidth (kHz Min) +/-15.0 +/-12.5 +/-10.0 +/- 7.5 S +/- 6.0 +/- 4.5 +/- 3.0 +/- 2.0 +/- 3.0 APPLICATIONS Communications Equipment 40 dB Bandwidth (kHz Min) +/ -30.0 +/ -24.0 +/ -20.0 +/-15.0 +/-12.5 +/-10.0 +/- 9.0 +/- 7.5 +/- 9.0 Stopband Att. +/ -100kHz (dB M in ) 35 35 35 35 35 35 35 35 60 Input/Output Impedence ( ) 1500 1500 1500 1500 2000 2000 2000 2000 2000 Test Circuit 1 5 R1 0 LTW 2 3 Attenuation (dB) 10 LTW33-455B LTW33-455D LTW33-455H 4 20 30 Rg R2 C 40 50 RF V.M S.S.G 60 400 410 420 430 440 450 460 470 480 490 500 Freq (kHz) Rg+R1+R2=input/Output Impedence C=10pF (Including strays and input/output capacitance of RF Voltmeter www.aelcrystals.co.uk quartz based frequency control components Order Hotline +44 1293 524245 45 www.aelcrystals.co.uk sales@aelcrystals.co.uk