Philips BGA2003 Manual Do Utilizador

1999 Jul 23

2

•

Low current

•

Very high power gain

•

Low noise figure

•

Integrated temperature compensated biasing

•

Control pin for adjustment bias current

•

Supply and RF output pin combined.

•

RF front end

•

Wideband applications, e.g. analog and digital cellular
telephones, cordless telephones (PHS, DECT, etc.)

•

Low noise amplifiers

•

Satellite television tuners (SATV)

•

High frequency oscillators.

Silicon MMIC amplifier consisting of an NPN double
polysilicon transistor with integrated biasing for low voltage
applications in a plastic, 4-pin SOT343R package.

1

GND

2

RF in

3

CTRL (bias current control)

4

V

S

+ RF out

handbook, halfpage

Top view

MAM427

BIAS

CIRCUIT

CTRL

RFin

GND

V

S+RFout

Marking code: A3.

Fig.1  Simplified outline (SOT343R) and symbol.

V

S

DC supply voltage

RF input AC coupled

−

4.5

V

I

S

DC supply current

V

VS-OUT

= 2.5 V; I

CTRL

= 1 mA;

RF input AC coupled

11

−

mA

MSG

maximum stable gain

V

VS-OUT

= 2.5 V; f = 1800 MHz;

T

amb

= 25

°

C

16

−

dB

NF

noise figure

V

VS-OUT

= 2.5 V; f = 1800 MHz;

Γ

S

=

Γ

opt

1.8

−

dB