SGA-7489 Ver la hoja de datos (PDF) - Stanford Microdevices

Número de pieza

componentes Descripción

Fabricante

SGA-7489

DC-3000 MHz Silicon Germanium HBT Cascadeable Gain Block

Stanford Microdevices 

Pin #

1

2

3

4

PPrreelliimmiinnaarryy

SGA-7489 DC-3000 MHz 5V SiGe Amplifier

Function

Description

RF IN

RF input pin. This pin requires the use of an

external DC blocking capacitor chosen for the

frequency of operation.

GND

Connection to ground. Use via holes for best

performance to reduce lead inductance.

Place vias as close to ground leads as

possible.

RF OUT/Vcc RF output and bias pin. Bias should be

supplied to this pin through an external series

resistor and RF choke inductor. Because DC

biasing is present on this pin, a DC blocking

capacitor should be used in most applications

(see application schematic). The supply side

of the bias network should be well bypassed.

GND Same as Pin 2.

Device Schematic

Recommended Bias

Resistor Values

Supply

Voltage(Vs)

7V

8V

9V

Rbias

(Ohms)

15 22 30

Power

Rating (W)

0.5

0.5

1.0

+Vs

Application Circuit

Component Description

Bias Inductor

Input / Output Coupling

Capacitors

Decoupling Capacitors

Choose circuit components

such that the following

conditions are met at the

minimum operational

frequency:

XLb >= 250 Ohms

XCc <= 10 Ohms

XCd <= 1 Ohm

RF input

Rbias

Cd

Cc1

SGA-7489

Lb

Cc2

RF Output

SGA-7489 Basic Application Circuit

726 Palomar Ave., Sunnyvale, CA 94085

Phone: (800) SMI-MMIC

3

http://www.stanfordmicro.com

EDS-101801 Rev A

Share Link: