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Sim68v Reference Design With Passive Antenna(saw+lna+saw)

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5 6 4 1 2 3 D D SIM68V reference design with passive antenna for best performance and increased immunity to jammers such as GSM VCC_RF U101 22 TXD NC1 RXD EINT0 C1 6 1uF GND GND 2 SAFEA1G58KA0F00 10nF (2.8V--4.3V) 2.3 23 24 V_BACKUP TIMEMARK VCC SCS GND3 NC0 U104 J102 4 VCC BIAS RFIN 3 L101 5.6nH 4 OUT 5 IN 1 1 SMA_A RF GND 5 GND 4 GND 3 GND 2 RXD1 7 Optional 4 TVS6 3 2 R205 1K 1 D203 2 VGPS_3V3 1 LED-1 3 B101 2 2 TVS2 1 1 R1091KR D201 4.7UF SCL 8 2 21 VGPS_3V3 LED-1C104 TXD1 GND 2 5 R3 100R RXD NC4 SDA 5 SHDN C C101 1 20 NC5 9 IN GND R2 100R TXD VCC_RF VCC_RF GND 1 GND 19 SCLK OUT 10 U102 6 RFOUT 2 18 GND0 1 GND 17 RF_IN MISO BGU7005 4 3 TVS4 TVS3 16 MOSI 11 R1 0R ANT U103 12 GND 15 GND1 3 C SIM68V Module 5 14 GND2 TVS5 13 SAFEA1G58KA0F00 DTC143ZE 2 B R207 B Q201 1 1K Note: 1. SIM68V does not support charging function to the backup battery, if a rechargable backup battery used,customer should design the charge circuit. 5pF (Optional) 2. The load-cap of TVS6 should be less than 2.5pF(Optional) SIM Technology A DRAWN BY PROJECT A TITLE SIM68V REF design CHECKED BY SIZE VER SHEET 6 5 4 3 2 1