资料介绍
LG_U8500_schematics7. CIRCUIT DIAGRAM
ANT1000 ANT1001 ANT_SEL2 GSM 900 TX GSM 900 RX/WCDMA C1230
ANT
ANT_SEL1 ANT_SEL0 LOW LOW HIGH HIGH LOW HIGH LOW LOW LOW LOW
GSM_PA_BAND LOW HIGH
MODE GSM DCS/PCS GSM900 DCS1800/PCS1900 OFF
TX_VCO_EN_0_N HIGH LOW HIGH
TX_VCO_EN_1_N LOW HIGH HIGH
LOW LOW HIGH LOW HIGH
SW1002
G2 G1 RF
DCS1800/PCS1900 TX DCS 1800 RX PCS 1900 RX C1111 33p
15p L1035 4.7nH L1034 15nH C1112 0.5p
KMS-512
L1032
3.3nH
DAC_REF
7 M054E L1031 7.5nH U1006 L1018 3.6nH FXL4T245BQX 1 VCCA 14 VCCB C1108 0.1u 7 GND1 8 GND2 15 BGND 13 B0 12 B1 11 B2 10 B3
ANT
L1023 2.2uH
150p
U1008 _OE T__R 9 6 2 CTRL1 4 CTRL2 11 CTRL3 20
CTRL4
C1096
VREG_RFRX_0_2.85V
150p
RX_EGSM2
L1019 3.6nH L1033 3.3nH
L1021 2.2uH
12 13 RX_DCS2 14 RX_PCS1 15 RX_PCS2 16 RX_EGSM1 17
RX_DCS1 TX_DCSPCS TX_EGSM
L1022 2