AD6548+SKY77542+Diplexer SAW S...

AD6548+SKY77542+Diplexer SAW5

4

3

2

1

E1 ANTENNA nc C1 C2 nc VRF_SEMSE L1 0R C3 PAEN
D

R1 1K C4 22pF

Outside the shielding
VBAT A L3 C9 NC + VRF_23 0 C11 K VAPC C12 10K 22pF C13 220pF R4 24K NC 2 1

L2 0
D

nc

Suggest to connect to BANDSW_DCS VccRF(2.8V) to get better HB Low PCL isolation
R2 VLOGIC NC

C5 6pF C10 6pF

C6 22pF

C7 C8 0.1uF 22uF R3

VCCRF

VRF R5 J1 TST_PORT 4 1 0R 13 16 18 6 5

VRF_23 supply power to tranceiver and PA,VRF_SENSE is the feedbak pin to BB.

12

11

VLOGIC

TX_EN

RSVD

RSVD

RSVD

VBATT

BS

VRAMP

10

9

7

3

2

GND GND

6 4 3 5 1 2 26MHz L8 820nH C18 47pF L4 NC R6 27 R7 56

C14

0 L5 27nH

C15

22pF

23 27 28 29 30 31

ANT DCS_IN GND GND GND GND DCS_RX GND GND GND GND GND GND GND GND GND GND GND GSM_RX GND

L6 nc

L7 nc

SKY77552/SKY77542
EGSM_IN

C

This area forbid to put th