3-bit R-2R Ladder DAC Circuit Diagram. Let us understand the concept through a 3-bit R-2R ladder DAC. The following diagram shows the R-2R 3-bit ladder DAC. The leftmost side of the circuitry has the least significant bit, i.e., B0, whereas B2, which is the most significant bit, connects to the amplifier.. Digital-to-analog (DAC) converter circuits are an important component in many of today's technologies, converting digital signals into analog signals. A DAC circuit diagram is a graphical representation of how these components are connected in order to create an effective DAC system.
The digital signal is represented with a binary code, which is a combination of bits 0 and 1. This chapter deals with Digital to Analog Converters in detail. The block diagram of DAC is shown in the following figure −. A Digital to Analog Converter (DAC) consists of a number of binary inputs and a single output.. R-2R D/A Converter Example No1. A 4-bit R-2R digital-to-analogue converter is constructed to control the speed of a small DC motor using the output from a digital logic circuit. If the logic circuit uses 10 volt CMOS devices, calculate the analogue output voltage from the DAC when the input code is hexadecimal number "B".