11

Figure 18. Balanced Amplifier Demo Board Layout Diagram

Notes:

1. Recommended PCB material is 10 mils Rogers RO4350.

2. Suggested component values may vary according to layout and PCB material.

3. Input board loss at 1950 MHz is 0.18 dB.

BALANCED MODE APPLICATION

Electrical Specifications

otherwise stated.

Symbol

Parameter and Test Condition

Units

Typ.

Vdd

Supply Voltage per amplifier

V

4.8

Idd

Supply Current per amplifier

mA

50

Gain

Gain

dB

18.6

NF

Noise Figure

dB

0.489

OP1dB

Output Power at 1dB Gain Compression

dBm

21.6

IIP3

Input Third Order Intercept Point

dBm

20.2

S11

Input Return Loss, 50 Ω source

dB

-28.8

S22

Output Return Loss, 50 Ω load

dB

-23.2

S12

Reverse Isolation

dB

-30.3

Balanced Amplifier Demo Board Layout

L2

L1

RFIN

R2

X1

C15 C14

C16

C3

MGA-16X16 Demoboard

(2-Port)

Rev 1

C5

C4

C20

L3

C17

APRIL 2011

C22

R8

C26

C21

C13

R6

C12

C18

R7

L4

C19

C9

X2

G 0.45mm

W 0.58mm

H 10mil

DK 3.48

RO4350

R9

R10

C7

R1

C1

C2

R3

C6

C23

C25

C10

C8

R4

C11

C24

RFOUT

R5