Op Amp Dac Circuit. As well as resistors and capacitors that are passive components operational amplifiers are one of the basic building blocks of analogue electronic circuits. In the circuit op amp is used as current to voltage converter.
This chapter of the book deals with data conversion and associated signal conditioning circuitry involving the use of op amps. The op amp circuit is a powerful took in modern circuit applications. In the circuit the op amp is connected in the inverting mode.
Since each input resistor has a binary weighting we could use it to convert digital values into an analog voltage which is what a dac digital to analog converter essentially does.
The op amp circuit is a powerful took in modern circuit applications. This summing amplifier has four inverted inputs with resistor values 10 kω 20 kω 40 kω and 80 kω. The following figure shows the circuit diagram of the binary weighted resistor type dac. 6 6 5 where resistors having values in the ratio 1 2 4 and 8 are fed from a stable reference voltage and can be individually switched into the input circuit of the summing op amp.
