点晶DM134B恒流驱动芯片测试程序，包括20mA和40mA测试，FPGA采用LATTICE的M4A5-Point crystal DM134B constant current driver IC testing procedures, including the 20mA and 40mA test, FPGA using M4A5 of LATTICE

4-20ma application note

SPI控制三片AD420程序，三片AD420级联，其输出电流是0-20mA-SPI control three AD420 program, three AD420 cascade, the output current is 0-20mA

无线A7105说明书 0.0 Initial issue. 0.1 Modified specification and add section for TX power setting 0.2 Add top marking info., reflow profile, Carry tape & reel dimensi 0.3 Modify descr iption of state machine and FIFO mode Rename IRQS1/