Analog-to-Digital Conversion Using Ladder Network

Another popular method of analog-to-digital conversion involves the use of a ladder network in conjunction with counter and comparator circuits. In this method, a digital counter progresses from zero while the ladder network driven by the counter generates a staircase voltage pattern, incrementing by one voltage step with each count. A comparator circuit then compares this staircase voltage with the analog input to facilitate the conversion process effectively.

• Analog-to-Digital Conversion
• Ladder Network
• Counter Circuits
• Comparator Circuits

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1. Analog-to-Digital Conversion LADDER-NETWORK CONVERSION Another popular method of analog-to-digital conversion uses a ladder network along with counter and comparator circuits (see Fig. 17.15). A digital counter advances from a zero count while a ladder network driven by the counter outputs a staircase voltage, as shown in Fig. 17.15b, which increases one voltage increment for each count step. A comparator circuit, receiving both staircase voltage and analog input