B7955 datasheet(6/11 Pages) EPCOS

6 / 11 page

February 1, 2010

B7955

1880.0 / 1960.0 MHz

Please read

cautions and warnings and

important notes at the end of this document.

SAW Components

BAW/SAW Duplexer

Data sheet

Annotation for characteristics section

Attenuation of WCDMA signal (“Powertransferfunction”,

WCDMA) is determined by

fCarrier according to 3GPP TS 25.101 (e.g. for WCDMA Band 2 Passband, fCarrier ranges from

1852.4 MHz (lowest Tx channel) to 1907.6 MHz (highest Tx channel)). HRRC(f) is the transfer

function of the root-raised cosine transmit pulse shaping filter according to 3GPP TS 25.101 with

the following normalization:

Maximum ratings

Operable temperature range1)

1) Defines the temperature range in which the BAW/SAW device keeps its typical characteristics, however

the specification values are not guaranteed.

–30/+85

˚C

Storage temperature range

Tstg

–40/+85

˚C

DC voltage

VDC

ESD voltage

VESD

502)

2) acc. to JESD22-A115A (machine model), 10 negative & 10 positive pulses.

machine model, 10 pulses

Input power at

source and load impedance 50

Ω

1850.0 ... 1910.0 MHz

elsewhere

dBm

continuous wave

T = 55˚C, 50.000 h

}

d21 f

()H

RRC ff Carrier

–

()

∞

∫

RRC f

()

∞

∫

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