A single supply RS232 interface for bipolar A to D converters
Sean Gold
Abstract
A single supply RS232 interface for bipolar analog-to-digital converters is described.
Keywords
RS232 interface
bipolar ADC
LT1180
LTC1294
Designing circuitry for single supply operation is often an attractive simplification for reducing production costs. Yet many applications call for just a few additional supplies to solve simple interface problems. The example presented here describes how an advanced RS232 interface can simplify an A to D converter which processes bipolar signals.
The LT1180 RS232 transceiver includes a charge pump which produces low ripple supplies with sufficient surplus current to drive a CMOS A to D converter and precision ...
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