Phone: +86-23-62808818

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LBS12901

Rev. Date

2006-8-6

SIPAT Co., Ltd.

( CETC No. 26 Research Institute )

Nanping Huayuan Road No. 14

Chongqing, China, 400060

Rev.

1.0

Page 1/3

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128.9MHz SAW Filter

4MHz Bandwidth

Part Number: LBS12901

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

128.8

128.9

129

Insertion Loss

dB

-

24

28

1 dB Bandwidth

MHz

-

3.73

-

3 dB Bandwidth

MHz

3.8

3.92

-

40 dB Bandwidth

MHz

-

4.63

-

50 dB Bandwidth

MHz

-

4.69

-

Passband Variation

dB

-

0.6

1.2

Absolute Delay

usec

-

3.78

4

f0±2.35MHz

dB

35

48

-

f0±2.55MHz

dB

45

50

-

f0±2.95MHz

dB

50

57

-

Ultimate Rejection

f0±6.95MHz

dB

55

62

-

Material Temperature coefficient

KHz/°C

0.13

Ambient Temperature

°C

25

Package Size

DIP3512

(35.0x12.8x4.7mm3)

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=100nH L2=82nH

C1=C2=47pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

C1

INPUT

OUTPUT

50Ω

50Ω

L1

L2

C2