RF2705 View Datasheet(PDF) - RF Micro Devices

Part Name

Description

Manufacturer

RF2705

QUADRATURE DEMODULATOR

RF Micro Devices 

RF2705

Parameter

Specification

Unit

Min.

Typ.

Max.

Output Performance with CW Baseband Inputs

Low Band Mode (GSM850/GSM900), cont’d

Mode=Low Band FLOx1 (see Control Logic Truth Table for Mode Control Settings)

Intermodulation

Output IP3*

+20.0

dBm

Intermodulation IM3 tone at

FC+70kHz and FC+130kHz

relative to tones at

FC+90kHz and FC+110kHz

-48

dBc

Low Band Bypass Mode (GSM850/GSM900)

Mode=Low Band Bypass (see Control Logic Truth Table for Mode Control Settings)

PA Driver

GMSK Input Power*

-3

0

+3

dBm

GMSK Output Power 5.0

7.5

10.0

dBm

Output Impedance*

50

Ω

Output Noise

At FC±20MHz*

* Not tested in Production

-161

-159

dBc/Hz

Condition

GC=2.0V. Extrapolated from IM3 with two

baseband tones at 90kHz and 110kHz

applied differentially, in quadrature, at both I

and Q inputs, each tone 400mVP-P.

GC = 2.0 V

VCC = 2.7 V

At LO LB input from a 50Ω source.

At RF LB output

AM+PM noise, LO=0dBm

Rev A4 041026

5-119

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