MTK6253+SKY7755 dual band
时间:2020-01-14
大小:23.65KB
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资料介绍
MT6253+SKY77555 dual band V25
4
3
2
1
E601 ANTENNA nc C602 C611 6pF R601 APC 1K R602 47.5K C601 150pF C613 22pF R601 PAEN 1K C601 22pF J601 TST_PORT 27 8 7 6 5 4 3 2 1 U601 2 22pF 26 25 24 23 22 27nH L604 C627 0 C617 3 1 4 0R R604
VRF
D
BANDSW_DCS
D
Suggest to connect to VccRF(2.8V) to get better HB Low PCL isolation
R602 NC VLOGIC VRF
C603 nc L603 C604 nc C615 5.6pF 2 L601 0R VDD28_OPLL BLM15BB750SN1 1 C616 1uF 2 1 VRF_1
6 5
TX_EN
GND
GND
GND
GND
C618 PAIN_HB PAIN_LB C619 33pF 10pF
9 10 C611 nc 11 12 13
HB_IN LB_IN GND VBATT GND
VLOGIC
VRAMP
ANT GND
GND
nc C611
C615 close to VDD28_OPLL L603 close to VDD28_OPLL C616 close to VDD28_RFVCO
C
BS
C
nc L605
nc L604 VRF_1 VDD28_OPLL
SKY77555
GND GND GND
VBAT
U1D E21 F22 F24 H30 J33 K32 M30 C621 100nF 2 1uF C620 1 2 N31 P30 K34 L33 VDD28_OPL……
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