Book Analog Interfacing to Embedded Microprocessors
Another possibility is to use a logic driver with multiple sections and parallel
the individual gates to obtain more drive.
CCD ADCs
A number of manufacturers make ADCs that are optimized for interfacing to
CCDs. These often contain clamping circuitry to implement CDS and some
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of these parts include three channels for interfacing to trilinear or other color
arrays. Typical parts include the 3-channel Fairchild TMC1103, the Burr-
Brown VST 2000 and VST 3000 series, and the Maxim MAX1101.
Magnetic Sensors
Hall Effect Sensors
Probably the simplest magnetic sensor to use in an embedded application
is a Hall effect sensor. The Hall effect was discovered by Dr. Edwin Hall in
1879. He discovered that if a magnetic field was placed perpendicular to
one face of a thin gold sheet in which a current was flowing, a voltage would
appear across the sheet (Figure 3.24). This voltage is proportional to the
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