Phone: +86-23-62920684

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LB297DS01

Rev. Date

2011-2-14

SIPAT Co., Ltd.

( CETC No. 26 Research Institute )

Nanping Huayuan Road No. 14

Chongqing, China, 400060

Rev.

4.1

Page 1/3

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297.5MHz SAW Filter

35MHz Bandwidth

Part Number: LB297DS01

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

297.5

Insertion Loss

dB

12.5

14

1 dB Bandwidth

MHz

35

37.3

3 dB Bandwidth

MHz

38.9

35 dB Bandwidth

MHz

44.2

67

Passband Variation

dB

0.6

dB

35

40

Group Delay Variation

nsec

60

Subatrate Material

YZ

Ambient Temperature

°C

25

Package Size

SMD7.0*5.0

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=39nH

L2=27nH

C1=10pF

C2=12pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L2

L1

C1

C2