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RF3857

DS110616

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

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

Evaluation Board Schematic

WiBRO/WiFi (2.3GHz to 2.7GHz)

Note: for best turn on and OFF time for both RX paths C1 and C2 should be changed to a value between 10pF to 100pF.

R4

1.8 k



Logic

Control

1

2

3

6

5

4

8

7

12

11

10

9

15

16

13

14

Logic

Control

C1

22 nF

J1

RFIN1

50

strip

C2

22 nF

J2

RFIN2

50

strip

VREF2

R3

1.8 k



VREF1

R2

0



GAIN SEL1

C10

1.5 pF

50

strip

J3

RFOUT1

L1

1.5 nH

C8

100 pF

C7

10 nF

VCC1

R5

0



GAIN SEL2

C6

1.5 pF

50

strip

J4

RFOUT2

L2

1.5 nH

C3

100 pF

C4

10 nF

VCC2

C5

DNI

R6

0



R1

0



C9

DNI