MONOLITHIC CRYSTAL FILTERS
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)
ELECTRICAL CHARACTERISTICS (10.7 and 21.4 MHz)
For 12.5 KHz Channel Spacing (Operating Temperature -20 to +70˚C)
MODEL
ECS-10.7-7.5A
ECS-10.7-7.5B
ECS-10.7-7.5C
ECS-10.7-7.5D
ECS-21K7.5A
ECS-21K7.5B
ECS-21K7.5C
ECS-21K7.5D
ECS-21K7.5E
NOMINAL
FREQ. (f
O
)
(MHz)
10.7
10.7
10.7
10.7
21.4
21.4
21.4
21.4
21.4
NUMBER
OF
POLES
2
4
6
8
2
4
6
8
10
PASSBAND
3dB MIN.
(KHz)
±3.75
±3.75
±3.75
±3.75
±3.75
±3.75
±3.75
±3.75
±3.75
RIPPLE
MAX.
(dB)
0.5
1.0
2.0
2.0
0.5
1.0
2.0
2.0
2.0
INSERTION
LOSS MAX.
(dB)
1.5
2.5
3.5
4.0
2.0
2.5
3.0
4.0
4.5
STOPBAND
MAX.
(dB) (KHz)
20 ±18
40 ±14
45 ±8.75
65 ±8.75
18 ±12.5
35 ±12.5
45 ±8.75
65 ±9
75 ±8.75
65 ±12.5
90 ±12.5
STOPBAND
MAX.
(dB) (KHz)
GUARANTEED
ATTENUATION
(dB) (f
O
±KHz)
35 +300 ~ +1000
50 -200 ~ -1000
65 +300 ~ +1000
80 -200 ~ -1000
65 ±12.5 ~ ±300
90 ±12.5 ~ ±300
75 -910
90 ±910
65 ±12.5 ~ ±300
90 ±12.5 ~ ±300
90 ±12.5 ~ ±300
TERMINATING
IMPEDANCE
(Ohms/pF)
1800//5.0
1800//4.0
1800//3.5
1800//3.5
1500//6.0
850//5.0
850//5.0
850//5.0
850//5.0
CASE
HC-49/U
HC-49/U x 2
SC-3
SC-4
UM-1
UM-1 x 2
SC-1
SC-1
SC-2
65 ±12.5
90 ±12.5
90 ±10.5
For 20 KHz Channel Spacing (Operating Temperature -20 to +70˚C)
MODEL
ECS-10.7-12A
MF 10.7-12B
MF 10.7-12C
MF 10.7-12D
ECS-21K12A
ECS-21K12B
ECS-21K12C
ECS-21K12D
NOMINAL
FREQ. (f
O
)
(MHz)
10.7
10.7
10.7
10.7
21.4
21.4
21.4
21.4
NUMBER
OF
POLES
2
4
6
8
2
4
6
8
PASSBAND
3dB MIN.
(KHz)
±6.0
±6.0
±6.0
±6.0
±6.0
±6.0
±6.0
±6.0
RIPPLE
MAX.
(dB)
0.5
1.0
2.0
2.0
0.5
1.0
2.0
2.0
INSERTION
LOSS MAX.
(dB)
2.0
2.5
3.0
4.0
2.0
2.5
3.0
4.0
STOPBAND
MAX.
(dB) (KHz)
18 ±23
40 ±20
45 ±14
65 ±14
18 ±23
40 ±20
45 ±14
65 ±14
65 ±20
90 ±20
60 ±20
90 ±20
STOPBAND
MAX.
(dB) (KHz)
GUARANTEED
ATTENUATION
(dB) (f
O
±KHz)
35 +300
40 -200
65 +300
80 -200
65 ±20
90 ±20
35 +350
50 -200
65 +350
70 -200
65 ±20
90 ±20
~
~
~
~
~
~
~
~
~
~
~
~
+1000
-1000
+1000
-1000
±300
±300
+1000
-1000
+1000
-1000
±300
±300
TERMINATING
IMPEDANCE
(Ohms/pF)
2500//2.5
2500//1.5
2800//1.0
2800//1.0
1200//3.0
1200//2.5
1200//2.5
1200//2.5
CASE
HC-49/U
HC-49/U x 2
SC-3
SC-4
UM-1
UM-1 x 2
SC-1
SC-1
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CRYSTAL FILTERS
74
CRYSTAL FILTERS