76

ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM

CRYSTAL FILTERS

CRYSTAL FILTERS

MONOLITHIC CRYSTAL Filters

Dø

A

A

OUT

L

1.5

GND

IN

GND

Attenuation

(dB)

(

µ sec)

Stopband width

Stopband width

Attenuation

curve

Group

delay curve

Ripple

Frequency

Loss

fo

Nominal

frequency

Passband

width

Group delay

time

Attenuation

guaranteed

Specified

attenuation

Attenuation

t

Group delay

distortion

Spurious response

SG

MCF

C

LM

C

Zt

Zt

2-POLE MCF

Zt: Terminating Impedance

SG

MCF

C

LM

C

Zt

Zt

4-POLE MCF

Zt: Terminating Impedance

MCF

C

Dot mark

ø 0.43

4.7

11.1 Max.

4.88

± 0.2

Figure 1) HC-49/U

ø 0.35

7.3 Max.

8.0

2.5 Max.

3.75

±0.2

GND

Figure 2) UM-1

Figure 5) MCF Test Circuits

Figure 4) SC Pkg with Dimensional Chart

Figure 3) MCF Characteristics Curve

DIMENSIONS AND ELECTRICAL DIAGRAMS (mm)

DIMENSIONS (mm)

CASE

LW

H

A

B

D

SC-1

11

8.5

11.5

7.4

2.0

0.30

SC-2

13.4

8.5

11.5

9.8

2.0

0.30

SC-3

15

12.0 15.0

9.0

2.5

0.43

SC-4

18.5 12.0 15.0

13.4

2.5

0.43

SC-5

23.0 12.0 15.0

17.8

2.5

0.43

NOMINAL

NUMBER

PASSBAND

RIPPLE

INSERTION

STOPBAND

STOPBAND

GUARANTEED

TERMINATING

MODEL

OF

3dB MIN.

MAX.

LOSS MAX.

MAX.

MAX.

ATTENUATION

IMPEDANCE

CASE

(MHz)

POLES

(KHz)

(dB)

(dB)

(dB) (KHz)

(dB) (KHz)

(Ohms/pF)

ECS-70K15A

70.0

2

±7.5

1.0

2.5

15 ±25

35

-910

2000//-1.0

UM-1

ECS-70K15B

70.0

4

±7.5

1.0

4.0

40 ±35

70

±910

2000//-1.0

UM-1 x 2

ECS-70K20A

70.0

2

±10

1.0

2.5

15 ±28

35

-910

2500//-1.0

UM-1

ECS-70K20B

70.0

4

±10

1.0

4.0

35 ±40

70

±910

2500//-1.0

UM-1 x 2

ECS-90M20A

90.0

2

±10

1.0

2.5

15 ±30

35

-910

2500//-1.0

UM-1

ECS-90M20B

90.0

4

±10

1.0

4.0

30 ±30

70

±910

2500//-1.0

UM-1 x 2

70 MHz & 90 MHz Monolithic Crystal Filters (Operating Temperature -20 to +70˚C)

NOMINAL

NUMBER

PASSBAND

RIPPLE

INSERTION

STOPBAND

STOPBAND

GUARANTEED

TERMINATING

MODEL

OF

3dB MIN.

MAX.

LOSS MAX.

MAX.

MAX.

ATTENUATION

IMPEDANCE

CASE

(MHz)

POLES

(KHz)

(dB)

(dB)

(dB) (KHz)

(dB) (KHz)

(Ohms/pF)

ECS-55K15A

55.0

2

±7.5

1.0

2.0

15 ±25

70

-910

600//3.0

UM-1

ECS-55K15B

55.0

4

±7.5

1.0

3.0

30 ±25

90

±910

600//1.5

UM-1 x 2

ECS-55K20A

55.0

2

±10

1.0

2.0

15 ±30

75

-910

910//2.5

UM-1

ECS-55K20B

55.0

4

±10

1.0

3.0

25 ±25

90

±910

910//1.0

UM-1 x 2

ECS-55K30A

55.0

2

±15

1.0

2.0

15 ±50

70

-910

1200//1.5

UM-1

ECS-55K30B

55.0

4

±15

1.0

3.0

30 ±50

90

±910

1200//0.7

UM-1 x 2

ECS-55K32A

55.0

2

±16

0.5

2.5

4 ±29.5

65

-910

1250//1.3

UM-1

ECS-55K32B

55.0

4

±16

1.0

5.0

30 ±52

80

±910

1250//0.5

UM-1 x 2

55 MHz Monolithic Crystal Filters (Operating Temperature -20 to +70˚C)