Phone: +86-23-62920684

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LB140DS22

Rev. Date

2005-4-26

SIPAT Co., Ltd.

( CETC No. 26 Research Institute )

Nanping Huayuan Road No. 14

Chongqing, China, 400060

Rev.

1.0

Page 1/3

C

n

N

e

S

w

m

140MHz Low-loss SAW Filter

0.55MHz Bandwidth

Part Number: LB140DS22

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

139.96

140

140.04

Insertion Loss

dB

-

10.2

12

1 dB Bandwidth

MHz

0.48

0.55

-

3 dB Bandwidth

MHz

-

0.86

-

35 dB Bandwidth

MHz

-

1.98

2.10

Passband Variation

dB

-

0.3

0.6

Absolute Delay

usec

-

1.88

-

Phase Linearity

(f0

deg

-

0.8

-

Group Delay Variation

(f0

nsec

-

80

200

Ultimate Rejection

f0

f0

dB

dB

37

40

41

45

-

-

Subatrate Material

Quartz

Ambient Temperature

°C

25

Package Size

SF－26

Notes:

1. All specifications are based on the test circuit shown

2. In production, devices will be tested at room temperature to a guardbanded specification to ensure

electrical compliance over temperature

3. Electrical margin has been built into the design to account for the variations due to temperature drift

and manufacturing tolerances

4. This is the optimum impedance in order to achieve the performance show

Matching Configuration

L1=82nH

L2=100nH

C1=56pF

C2=47pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L2

L1

C1

C2