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发挥模数转换器的最大潜能
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2009-06-11
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Many of today’s high-resolution ADCs (Analog-to-Digital
Converters) are operating from a single supply and utilize
fully differential inputs. This can be a problem for singleended
signals that are bipolar relative to common. This
article will illustrate circuit configurations that will preserve
the full-scale input range by utilizing modern features, such
as Programmable Gain Amplifiers (PGAs) and internal voltage
reference. It will also discuss issues that the designer
must consider when selecting components utilizing these
signal-conditioning circuits.
Converters) are operating from a single supply and utilize
fully differential inputs. This can be a problem for singleended
signals that are bipolar relative to common. This
article will illustrate circuit configurations that will preserve
the full-scale input range by utilizing modern features, such
as Programmable Gain Amplifiers (PGAs) and internal voltage
reference. It will also discuss issues that the designer
must consider when selecting components utilizing these
signal-conditioning circuits.
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