RF2705 데이터 시트보기 (PDF) - RF Micro Devices

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RF2705

QUADRATURE DEMODULATOR

RF Micro Devices 

RF2705

Parameter

Specification

Unit

Min.

Typ.

Max.

Output Performance with CW Baseband Inputs

Wideband Mode

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

VGA and PA Driver

Output Power W-CDMA Modu-

5

dBm

lated*

Output Power CW

2

5

8

dBm

Gain Control Voltage Range 0.2

2.0

V

Gain Control Range

92

dB

Gain Control Slope

Modulator

Sideband Suppression

*

*

*

Carrier Suppression

3rd Harmonic of Modulation

Suppression at FC-3x300kHz

Spurious Outputs

Spurious Output at Integer Multi-

ples of FLO LB*

FLO LB

4xFLO LB

6xFLO LB

Output Compression

Output P1dB*

Intermodulation

Output IP3*

73

dB/V

-48

-30

dBc

-50

-30

dBc

-50

-30

dBc

-50

-30

dBc

-42

-30

dBc

-41

-30

dBc

-38

-30

dBc

-23

-10

dBc

-55

-50

dBc

-60.0

-14.0

-47.0

+11.5

+20

dBm

0

dBm

0

dBm

dBm

dBm

Intermodulation IM3 tone at

-37

dBc

FC+70kHz and FC+130kHz

relative to tones at

FC+90kHz and FC+110kHz

-40

dBc

* Not tested in Production

** Provides the same output power as modulated signal with associated crest factor.

Condition

VCC=2.7V, T=+25°C, LO=975MHz to

990MHz at -10dBm, IQ=540mVP-P** at

100kHz, unless otherwise noted

GC=2.0V, IQ=0.8VP-P at HQPSK

GC = 2.0 V

Difference between output power at

GC=2.0V and GC=0.2V

Calculated between GC=1.0V and 0.5V

GC=2.0V, No I/Q adjustment

GC=1.5V, No I/Q adjustment

GC=1.0V, No I/Q adjustment

GC=0.5V, No I/Q adjustment

GC=2.0V, No I/Q adjustment

GC=1.5V, No I/Q adjustment

GC=1.0V, No I/Q adjustment

GC=0.5V, No I/Q adjustment

GC = 2.0 V

GC=2.0V, I/Q=540mVP-P at 100kHz

FLO LB leakage

Second harmonic of carrier

Third harmonic of carrier

I/Q = 100 kHz

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

GC = 1.5 V

Rev A4 041026

5-117

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