MONOLITHIC CRYSTAL Filters
55 MHz Monolithic Crystal Filters (Operating Temperature -20 to +70˚C)
MODEL
ECS-55K15A
ECS-55K15B
ECS-55K20A
ECS-55K20B
ECS-55K30A
ECS-55K30B
ECS-55K32A
ECS-55K32B
NOMINAL
FREQ. (f
O
)
(MHz)
55.0
55.0
55.0
55.0
55.0
55.0
55.0
55.0
NUMBER
OF
POLES
2
4
2
4
2
4
2
4
PASSBAND
3dB MIN.
(KHz)
±7.5
±7.5
±10
±10
±15
±15
±16
±16
RIPPLE
MAX.
(dB)
1.0
1.0
1.0
1.0
1.0
1.0
0.5
1.0
INSERTION
LOSS MAX.
(dB)
2.0
3.0
2.0
3.0
2.0
3.0
2.5
5.0
STOPBAND
MAX.
(dB) (KHz)
15 ±25
30 ±25
15 ±30
25 ±25
15 ±50
30 ±50
4 ±29.5
30 ±52
STOPBAND
MAX.
(dB) (KHz)
GUARANTEED
ATTENUATION
(dB) (f
O
±KHz)
70
90
75
90
70
90
65
80
-910
±910
-910
±910
-910
±910
-910
±910
TERMINATING
IMPEDANCE
(Ohms/pF)
600//3.0
600//1.5
910//2.5
910//1.0
1200//1.5
1200//0.7
1250//1.3
1250//0.5
CASE
UM-1
UM-1 x 2
UM-1
UM-1 x 2
UM-1
UM-1 x 2
UM-1
UM-1 x 2
70 MHz & 90 MHz Monolithic Crystal Filters (Operating Temperature -20 to +70˚C)
MODEL
ECS-70K15A
ECS-70K15B
ECS-70K20A
ECS-70K20B
ECS-90M20A
ECS-90M20B
NOMINAL
FREQ. (f
O
)
(MHz)
70.0
70.0
70.0
70.0
90.0
90.0
NUMBER
OF
POLES
2
4
2
4
2
4
PASSBAND
3dB MIN.
(KHz)
±7.5
±7.5
±10
±10
±10
±10
RIPPLE
MAX.
(dB)
1.0
1.0
1.0
1.0
1.0
1.0
INSERTION
LOSS MAX.
(dB)
2.5
4.0
2.5
4.0
2.5
4.0
STOPBAND
MAX.
(dB) (KHz)
15
40
15
35
15
30
±25
±35
±28
±40
±30
±30
STOPBAND
MAX.
(dB) (KHz)
GUARANTEED
ATTENUATION
(dB) (f
O
±KHz)
35
70
35
70
35
70
-910
±910
-910
±910
-910
±910
TERMINATING
IMPEDANCE
(Ohms/pF)
2000//-1.0
2000//-1.0
2500//-1.0
2500//-1.0
2500//-1.0
2500//-1.0
CASE
UM-1
UM-1 x 2
UM-1
UM-1 x 2
UM-1
UM-1 x 2
DIMENSIONS AND ELECTRICAL DIAGRAMS (mm)
Attenuation
(dB)
2.5 Max.
11.1 Max.
7.3 Max.
8.0 Max.
11.2
Stopband width
Stopband width
(µ sec)
Attenuation
Attenuation
curve
Spurious response
Group
delay curve
20±1
Group delay
distortion
4.88 ± 0.2
ø
0.43
4.7
3.75 ±0.2
15 Min.
Attenuation
guaranteed
t
Passband
width
Ripple
Specified
attenuation
Group delay
time
Figure 1) HC-49/U
GND
ø
0.35
L
8.0
3.2
Loss
fo
Nominal
frequency
Frequency
Figure 2) UM-1
H
Figure 3) MCF Characteristics Curve
7 Min.
Dø
1.5
A
CASE
SC-1
SC-2
SC-3
SC-4
SC-5
L
11
13.4
15
DIMENSIONS (mm)
W
H
A
B
D
8.5
8.5
11.5
11.5
7.4
9.8
9.0
13.4
17.8
2.0
2.0
2.5
2.5
2.5
0.30
0.30
0.43
0.43
0.43
SG
Zt
MCF
Zt
Zt
MCF
Dot mark
Zt
MCF
4
GND
0.3
OUT
B
12.0 15.0
C
C
LM
SG
C
C
C
LM
W
B
18.5 12.0 15.0
23.0 12.0 15.0
IN
A
GND
2-POLE MCF
Zt: Terminating Impedance
4-POLE MCF
Zt: Terminating Impedance
Figure 4) SC Pkg with Dimensional Chart
Figure 5) MCF Test Circuits
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CRYSTAL FILTERS
76
CRYSTAL FILTERS
ECS [ ECS, INC. ]
