SAW FILTER

HDF204M

SMD-21

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Page 3 of 10

1. SCOPE

This specification shall cover the characteristics of SAW filter With 204M used for IF

applications.

2. ELECTRICAL SPECIFICATION

DC Voltage VDC

10V

AC Voltage Vpp

10V50Hz/60Hz

Operation temperature

-40℃ to +85℃

Storage temperature

-45℃ to +85℃

RF Power Dissipation

0dBm

2.1Electrical characteristics

Parameter

Minimum

Typical

Maximum

Unit

Center Frequency,Fo

204

MHz

Insertion loss at 204 MHz

Including losses in matching test

circuit show below

10.5

12.0

dB

1 dB Lower Frequency

1 dB Upper frequency

204.3

203.56

204.43

203.8

MHz

Amplitude Variation

203.7~204.3 MHz

0.6

1.2

dB

Group delay variation

203.7~204.3 MHz

26

170

nsec.

Rejection

(4)

194~200 MHz

200~201.5 MHz

201.5~202 MHz

206.0~206.5 MHz

206.5~209 MHz

209~214 MHz

36

36

35

35

38

38

38

38

38

35

43.5

46.4

dB

Optimal source Impedance

(5)

8ohm//99nH

ohm

Optimal Load Impedance

(5)

8ohm//99nH

ohm

Temperature coefficient of frequency

+1.7

ppm/K

1.All specifications are based on the test circuit shown below

2. This specification is valid for room temperature only

3.Electrical margin has been built into the design to account for the variations due to manufacturing tolerances

4.Relative to insertion loss at 204 MHz