Digital to analog converters, also called DACs, are specialised devices engineered to convert digital signals into analog outputs so that other devices can read & identify the outputs. For example, they can convert a fixed-point binary number into a physical quantity like pressure or voltage.
DACs are widely used in the audio industry to convert the digital audio signals from binary codes to analog signals that a headphone amplifier or any other device can read & pick up.
Types of digital to analog converters (DACs)
Digital to analog converters or DACs come in different varieties. These include:
R-2R Ladder DACs: These types of DACs are binary converters that use the R and 2R values of a repeating cascaded resistor to enhance the accuracy of the conversion.
Switched Capacitors: DACs with switched capacitors possess a parallel capacitor network.
Switched Resistors: These have a parallel resistor system where the resistors are either activated or bypassed based on the nature of the digital signal.
Switched Current Source: A DAC with a switched current source chooses different current sources depending on the input digital signal.
Applications of digital to analog converters (DACs)
Digital to analog converters or DACs are primarily used in the audio and video industries. They are used in:
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