7
Connecting other digital devices
7.1 Digital-to-analogue converters
A digital-to-analogue converter converts a binary code into an analogue voltage or current. It has wide applications in process control, speech/music synthesis and computer-controlled experiments.
7.1.1 A simple R-2R D/A converter
A simple D/A converter can be constructed using several resistors arranged in an R-2R ladder network as shown in Figure 7.1. This converter can only be used in less critical applications. Dedicated D/A converter ICs should be used to achieve high conversion quality.
Figure 7.1 A simple R-2R network
7.7.2 Parallel I/O D/A converter, ZN428
The ...
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