D D P T D D D D D D D D D 4.7PF 8.2PF 4.7PF R24 R25 2 U4 300R 300R 300R 300R ERA-5 BG7TBL 26.CO AD9957 GND 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 GND D6 D7 D8 D D GND GND GND GND G7TBL@1 6.COM D D D D GND IN4148 Q2 GND IN4148 Q3 GND IN4148 N N 3 N 1 N N N N N N N N N N N N 3 N 1 N N N R15