Data Sheet

74
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX [phone] • WWW.ECSXTAL.COM
CRYSTAL FILTERS CRYSTAL FILTERS
NOMINAL NUMBER PASSBAND
RIPPLE
INSERTION STOPBAND STOPBAND GUARANTEED TERMINATING
MODEL FREQ. (fO) OF 3dB MIN. MAX. LOSS MAX. MAX. MAX. ATTENUATION IMPEDANCE CASE
(MHz) POLES (KHz) (dB) (dB) (dB) (KHz) (dB) (KHz) (dB) (f
O
±KHz
) (Ohms/pF)
35 +300 ~ +1000
ECS-10.7-7.5A 10.7 2 ±3.75 0.5 1.5 20 ±18
50 -200 ~ -1000
1800//5.0 HC-49/U
65 +300 ~ +1000
ECS-10.7-7.5B 10.7 4 ±3.75 1.0 2.5 40 ±14
80 -200 ~ -1000
1800//4.0 HC-49/U x 2
ECS-10.7-7.5C 10.7 6 ±3.75 2.0 3.5 45 ±8.75 65 ±12.5 65 ±12.5 ~ ±300 1800//3.5 SC-3
ECS-10.7-7.5D 10.7 8 ±3.75 2.0 4.0 65 ±8.75 90 ±12.5 90 ±12.5 ~ ±300 1800//3.5 SC-4
ECS-21K7.5A 21.4 2 ±3.75 0.5 2.0 18 ±12.5 75 -910 1500//6.0 UM-1
ECS-21K7.5B 21.4 4 ±3.75 1.0 2.5 35 ±12.5 90 ±910 850//5.0 UM-1 x 2
ECS-21K7.5C 21.4 6 ±3.75 2.0 3.0 45 ±8.75 65 ±12.5 65 ±12.5 ~ ±300 850//5.0 SC-1
ECS-21K7.5D 21.4 8 ±3.75 2.0 4.0 65 ±9 90 ±12.5 90 ±12.5 ~ ±300 850//5.0 SC-1
ECS-21K7.5E 21.4 10 ±3.75 2.0 4.5 75 ±8.75 90 ±10.5 90 ±12.5 ~ ±300 850//5.0 SC-2
MONOLITHIC CRYSTAL FILTERS
ELECTRICAL CHARACTERISTICS (10.7 and 21.4 MHz)
For 12.5 KHz Channel Spacing (Operating Temperature -20 to +70˚C)
ECS’s Monolithic Crystal Filters have very
high Q’s and excellent temperature and
aging characteristics. These filters offer
narrow and intermediate bandwidths. The
monolithic crystal filter is smaller and more
cost effective than a discrete crystal
filter. With the addition of coupling
capacitors between two-pole sections, they
can be cascaded to produce four, six and
eight (or more) pole filter responses.
FEATURES
• High stability for wide temperature ranges
• Sharp cut-off
• RoHS Compliant (Pb Free)
NOMINAL NUMBER PASSBAND
RIPPLE
INSERTION STOPBAND STOPBAND GUARANTEED TERMINATING
MODEL FREQ. (fO) OF 3dB MIN. MAX. LOSS MAX. MAX. MAX. ATTENUATION IMPEDANCE CASE
(MHz) POLES (KHz) (dB) (dB) (dB) (KHz) (dB) (KHz) (dB) (f
O
±KHz
) (Ohms/pF)
35 +300 ~ +1000
ECS-10.7-12A 10.7 2 ±6.0 0.5 2.0 18 ±23
40 -200 ~ -1000
2500//2.5 HC-49/U
65 +300 ~ +1000
MF 10.7-12B 10.7 4 ±6.0 1.0 2.5 40 ±20
80 -200 ~ -1000
2500//1.5 HC-49/U x 2
MF 10.7-12C 10.7 6 ±6.0 2.0 3.0 45 ±14 60 ±20 65 ±20 ~ ±300 2800//1.0 SC-3
MF 10.7-12D 10.7 8 ±6.0 2.0 4.0 65 ±14 90 ±20 90 ±20 ~ ±300 2800//1.0 SC-4
35 +350 ~ +1000
ECS-21K12A 21.4 2 ±6.0 0.5 2.0 18 ±23
50 -200 ~ -1000
1200//3.0 UM-1
65 +350 ~ +1000
ECS-21K12B 21.4 4 ±6.0 1.0 2.5 40 ±20
70 -200 ~ -1000
1200//2.5 UM-1 x 2
ECS-21K12C 21.4 6 ±6.0 2.0 3.0 45 ±14 65 ±20 65 ±20 ~ ±300 1200//2.5 SC-1
ECS-21K12D 21.4 8 ±6.0 2.0 4.0 65 ±14 90 ±20 90 ±20 ~ ±300 1200//2.5 SC-1
For 20 KHz Channel Spacing (Operating Temperature -20 to +70˚C)