Phone: +86-23-62920684

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LBT07088

Rev. Date

2004-12-20

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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70MHz SAW Filter

4.5MHz Bandwidth

Part Number: LBT07088

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

69.9

70

70.1

Insertion Loss

dB

-

26.2

27.5

3 dB Bandwidth

MHz

4.5

4.55

4.6

f0±4.55/2+0.4MHz

dB

35

38

-

f0±4.55/2+0.6MHz

dB

45

52

-

f0±4.55/2+1MHz

dB

50

54

-

Selectivity

f0±4.55/2+5MHz

dB

55

59

-

Group Delay Variation(f0±2.25MHz)

nsec

-

90

-

Passband Variation

dB

-

0.9

1.3

Ultimate Rejection

dB

55

60

-

Absolute delay

usec

-

3.95

4

Subatrate Material

112LT

Ambient Temperature

°C

25

Package Size

DIP3512

(35.2x12.7x5.2mm

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 shown

Matching Configuration

L1=L2=82+33nH

C1=C2=82pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L2

L1

C1

C2