RF2048 データシートの表示（PDF） - RF Micro Devices

部品番号

コンポーネント説明

メーカー

RF2048

GENERAL PURPOSE AMPLIFIER

RF Micro Devices 

RF2048

Pin Function Description

Interface Schematic

1

RF IN

RF input pin. This pin is NOT internally DC-blocked. A DC-blocking capacitor,

suitable for the frequency of operation, should be used in most applica-

tions. DC-coupling of the input is not allowed, because this will override the

internal feedback loop and cause temperature instability.

2

GND

Ground connection. For best performance, keep traces physically short

and connect immediately to ground plane.

3

RF OUT

RF output and bias pin. Biasing is accomplished with an external series

resistor and choke inductor to VCC. The resistor is selected to set the DC

current into this pin to a desired level. The resistor value is determined by

4

GND

the following equation:

R = (---V----S---U---P---P----L---Y----–----V----D----E---V---I--C----E---)

RF IN

S ICC

Care should also be taken in the resistor selection to ensure that the cur-

N rent into the part never exceeds 40mA over the planned operating temper-

ature. This means that a resistor between the supply and this pin is always

IG required, even if a supply near 3.6V is available, to provide DC feedback to

prevent thermal runaway. Because DC is present on this pin, a DC-blocking

capacitor, suitable for the frequency of operation, should be used in most

applications. The supply side of the bias network should also be well

S bypassed.

DE Same as pin 2.

Package Drawing

0.025

W ± 0.002

3

NE0.070

0.068

0.052

0.041

NOT

45° ± 1°

FOR0.200 Sq.

Typ.

sq.

0.020

± 0.002

0.040

± 0.002

NOTES:

1. Shaded lead is pin 1.

± 0.002

0.005

± 0.002

0.015

+0.002

-0.001

2. Darkened areas are metallization.

3. Dimension applies to ceramic lid minus epoxy coating.

RF OUT

Rev A13 DS070403

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

3 of 10

Share Link: