High-Speed Software-Controlled Gains

AD612/614 Can Be Used as µP-Controlled Programmable-Gain Amplifiers; This Circuit Does It with 4 Logic Chips and 2 Quad Switches

The AD612 and its high-speed version, the AD614, are hybrid differential instrumentation amplifiers that provide a choice of jumper-programmable gains from 1 to 1024, in binary steps. Figure 1 is a simplified schematic of these amplifiers, showing the nominal values of resistance in the gain-adjusting network. Read full article



Alan Jeffrey