Tel: +86-23-62808818

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LBT7028S

Rev. Date

2008-01-17

SIPAT Co., Ltd.

( CETC No.26 Research Institute )

#14 Nanping Huayuan Road,

Chongqing, China, 400060

Ver.

1.1

Page 1/4

C

n

N

e

S

w

m

70MHz IF SAW Filter

5MHz Bandwidth

Part Number: LBT7028S

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

69.9

70

70.1

Insertion Loss

dB

-

22.6

25

1 dB Bandwidth

MHz

4.7

5.01

-

3 dB Bandwidth

MHz

5.4

5.6

-

40 dB Bandwidth

MHz

-

7.8

8

Passband Variation

dB

-

0.9

1

Absolute Delay

usec

-

1.43

-

Group Delay Variation(f0±2MHz)

nsec

-

60

150

Ultimate Rejection(f0±12MHz)

dB

-

36

-

Material Temperature coefficient

KHz/°C

-1.26

Ambient Temperature

°C

25

Package Size

SMD13.3*6.5C

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=180nH L2=82nH

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L1

L2

INPUT

OUTPUT

50Ω

50Ω