DEMO-MGA-16X16B Datasheet, PDF(4/17 Page) Broadcom Corporation. – Dual LNA for Balanced Application 450

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DEMO-MGA-16X16B Datasheet, PDF (4/17 Pages) Broadcom Corporation. – Dual LNA for Balanced Application 450 – 1450 MHz

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Demo Board Layout

Demo Board Schematic

APRIL 2011

R9 R10

C20

RFIN

C16

C12

C13

MGA-16X16

Demoboard

(4-Port)

Rev 1

C23

C24

C25

R3 R4

C9 RFOUT

C19

C21

C22

C26

RO4350

DK 3.48

H 10mil

W 0.58mm

G 0.45mm

Figure 5. Demo Board Layout Diagram

Figure 6. Demo Board Schematic 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 900 MHz is 0.056 dB

4. The schematic is shown with the assumption that similar PCB is used for all MGA-16116, MGA-16216 and MGA-16316.

5. Detail of the components needed for this product is shown in Table 1.

6. R1 and R6 are for low frequency stability.

7. Bias to each LNA is adjustable using R3 and R8 (see Figure 6). Increasing R3 and R8 will reduce bias current (Idd) and vice-versa.

8. R9/R10 are stability improvement resistors that may not be needed in actual application. They are included in the demoboard to provide isolation

from power supply noise.

9. Center Paddle is grounded.

Table 1. Component list for 900 MHz matching

PART

C1, C12

C2, C13, C8, C22

C3, C9, C16, C19

C6, C20, C23, C34

C7, C21

C25, C26

L1, L2

L3, L4

R1, R6

R3, R8

R4, R7

R9, R10

Size

0402

0805

0402

Value

20 pF

0.1 mF

100 pF

4.7 mF

12 pF

NOT USED

68 nH

120 nH

51 ohm

1.5 kohm

0 ohm

10 ohm

Detail Part Number

GJM1555C1H200GB01

GRM155R71C104KA88D

GRM1555C1H101JD01E

GRM21BR60J475KA11L

GJM1555C1H120GB01

LQW15AN68NG00

LQW15ANR12J00

RK73B1ETTP510J

RK73B1ELTP152J

RK73B1ETTP0R0J

RK73B1ETTP100J

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