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RF2705G

LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER

RF Micro Devices 

RF2705G

Parameter

General Conditions

Local Oscillator

LO LB Input Frequency

RF LB Output Frequency

Input Power

IQ Baseband Inputs

IQ Level

Min.

824

824

-6.0

Specification

Typ.

Max.

915

915

0.0

+3.0

1.2

Unit

MHz

MHz

dBm

VP-P

IQ Common Mode

1.2

V

Input Bandwidth 0.7

1.0

MHz

Baseband Filter Attenuation 20

dB

Output Performance with Modulated Baseband Inputs

High Band EDGE 8PSK Mode (DCS1800/PCS1900)

Mode=High Band FLOx1 (see Control Logic Truth Table for Mode Control

Settings)

Output Power

Maximum Output Power with 8PSK

Modulated Signal*

Maximum VGC

-1

+1.5

dBm

Minimum VGC

-40

-38

dBm

Gain Range

42

dB

Out-of-Band Emission

Spectrum Emission Mask*

Frequency Spacing

200 kHz

250 kHz

400 kHz

600kHz to 1800kHz

1800kHz to 3000kHz

3000kHz to 6000kHz

> 6000 kHz

Error Vector Magnitude

RMS*

Origin Offset*

Peak*

Output Noise

At FC±20MHz*

Relative Noise at:

Maximum Gain

Absolute Noise at:

Maximum Gain

All Gain Settings

* Not tested in Production

-36

TBD

dBc

-43

TBD

dBc

-67

TBD

dBc

-73

dBc

-73

dBc

-73

dBc

-75

dBc

1.3

3

%

-37

-30

dB

3

11

%

-154

-150

-153

-151

dBc/Hz

dBc/Hz

dBm

dBm

Condition

8PSK

Input IQ signal driven differentially and in

quadrature.

At 20MHz offset

VCC=2.7V, T=+25°C

While meeting spectral mask

While meeting spectral mask

Difference between output power at GC=2.0V

and GC=0.2V.

30kHz BW

30kHz BW

30kHz BW

30kHz BW

100kHz BW

100kHz BW

100kHz BW

8PSK Modulation

GC=2.0V, IQ=1.2VP-P 8PSK

GC=2.0V to 1.4V

GC=2.0V, IQ=0VP-P

IQ=1.2VP-P 8PSK

Rev A0 DS060206

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

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