应用功能:+3.3 V/+5 V Multiplying12-Bit DACs The AD7943, AD7945 and AD7948 are fast 12-bit multiplyingDACs that operate from a single +5 V supply (Normal Mode)and a single +3.3 V to +5 V supply (Biased Mode). TheAD7943 has a serial interface, the AD7945 has a 12-bit parallelinterface, and the AD7948 has an 8-bit byte interface.