855915 datasheet, PDF - EEWORLD Datasheet

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855915: DescriptionSAW Filter, 1 Function(s), 249.6MHz,; CategoryAnalog mixed-signal IC filter; File Size64KB，1 Pages; ManufacturerSawtek Inc.

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855915 Overview

SAW Filter, 1 Function(s), 249.6MHz,

855915 Parametric

Parameter Name	Attribute value
Maker	Sawtek Inc.
Reach Compliance Code	unknown
Maximum attenuation frequency (+/- delta f)	5070 kHz
Attenuation at maximum frequency	40 dB
Center frequency or cutoff frequency (fo/fc)	249.6 MHz
filter type	SAW FILTER
high	1.9 mm
input resistance	50 OHM
Maximum insertion loss	20 dB
length	7 mm
Manufacturer's serial number	855915
Installation type	SURFACE MOUNT
Number of functions	1
Maximum operating temperature	80 °C
Minimum operating temperature	-10 °C
Output impedance	50 OHM Ω
physical size	L7XB5.51XH1.9 (mm)/L0.276XB0.217XH0.075 (inch)
width	5.51 mm
Base Number Matches	1

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249.6 MHz Bandpass Filter

Preliminary Specifications

Typical Performance

-10

-20

-30

-40

-50

-60

-70

-80

-90

234.6

237.6

240.6

-1

-2

-3

-4

-5

-6

-7

-8

-9

258.6

261.6

264.6

245.6

246.4

247.2

5 MHz Bandwidth

Part Number 855915

243.6

246.6

249.6

252.6

255.6

248.8

249.6

250.4

251.2

252.8

Center Frequency (f

)

Insertion Loss @249.6 MHz

1 dB Lower Frequency

1 dB Upper Frequency

1 dB Bandwidth

40 dB Lower Frequency

40 dB Upper Frequency

40 dB Bandwidth

Passband Ripple (247.68 - 251.52 MHz)

Delay Variation ( 247.68 - 251.52 MHz)

Input VSWR 247.68 - 251.52

Output VSWR 247.68 - 251.52

Rejection: 10 - 234.6 MHz

Rejection: 264.6 - 450 MHz

Substrate Material

Operating Temperature Range

Parameter

Specifications

Unit

Minimum

MHz

dB p-p

nsec

251.52

3.84

244.1

-10

Typical

249.6

16.11

246.98

251.89

4.89

244.27

254.41

10.14

0.22

27.15

1.25:1

1.34:1

63.5

55.63

Quartz

Maximum

247.68

255.1

1.92:1

Package Outline

Matching Configuration

L1 = 68 nH, L2 = 100 nH

L3 = 110 nH, C1 = 33 pF

Nominal/Source Load Impedance = 50

Ω

Package Style SMP-28

1/29/01

Sawtek Inc.

Telephone: (407) 886-8860

Fax: (407) 886-7061

253.6

Horizontal: 3 MHz/Div

Vertical: 10 dB/Div

Horizontal: 800 kHz/Div

Vertical: 1 dB/Div

Vertical: 10 nsec/Div

248

0.67

252

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