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SA910

Variable gain RF predriver amplifier

Philips Electronics 

Philips Semiconductors

Variable gain RF predriver amplifier

Product specification

SA910

AC ELECTRICAL CHARACTERISTICS

VCC1 = VCCBIAS = +3V;VCC(RFOUT1, RFOUT2) = 3.6V; TA = 25°C, ZS = ZL = 50Ω; VC = 2V; RFIN = 0dBm @ 830MHz; unless otherwise

stated.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNITS

MIN

TYP

MAX

fRF

PL

S21

η

S11

GC

S12

GOFF

PSENSE

Frequency range

Load power at RFOUT2

Small signal gain

Power added efficiency

Input return loss

Gain control range from Vc = 0.7 to 2V

Reverse isolation

Gain at RFOUT2 during power-down

(RFIN = -20dBm)

Power detector range

Saturated1

RFin = –20dBm

PL = 24dBm

RFin = 0dBm

dP/dV <120dB/V

820

830

905

MHz

21.5

24

dBm

31

dB

35

%

–12

dB

32

dB

-40

dB

-30

dB

25

dB

NOTE:

1. Needs proper output matching.

1997 Aug 12

7

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