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 Modulated Baseband Inputs

W-CDMA Mode

Mode=Wideband FLOx2 (see Control Logic Truth Table for Mode Control Settings)

Output Power

Maximum Output Power with

W-CDMA Modulated Signal*

High Power Mode

3

6

Medium Power Mode

-4

-1

dBm

dBm

Gain Range

High Power Mode

90

dB

Gain Step

High Power to Medium Power

±0.5

dB

Medium Power to Low Power

TBD

dB

Out-of-Band Emission

Adjacent Channel Leakage

Power Ratio (ALCR)*

Channel Spacing

±5 MHz

50

dBc

±10 MHz

65

dBc

Error Vector Magnitude

RMS*

1.4

%rms

Output Noise

At FC±40MHz*

-152

-146

dBc/Hz

-146

dBc/Hz

General Conditions

Local Oscillator

LO LB Input Frequency 960

990

MHz

RF WB Output Frequency 1920

1980

MHz

Input Power -10.0

0.0

+3.0

dBm

IQ Baseband Inputs

IQ Level

0.8

IQ Common Mode

1.2

Input Bandwidth

8

11

Baseband Filter Attenuation 10

* Not tested in Production

VP-P

V

MHz

dB

Condition

VCC=2.7V, T=+25°C, while meeting 48dBc

ALCR

GC = 2.0 V

GC = 1.5 V

Difference between output power at

GC=2.0V and GC=0.2V.

Gain step when switching between power

modes in either direction.

GC = 1.4 V

GC = TBD

3.84MHz relative to channel power

3.84MHz relative to channel power

3GPP W-CDMA

GC = 2.0 V

GC=2.0V to 1.5V

3GPP W-CDMA

HQPSK, 1DPCCH+1DPDCH

Input IQ signal driven differentially and in

quadrature.

At 40MHz offset

5-116

Rev A4 041026

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