December 2003
Intermediate to advanced
320 pages
9h 28m
English
Content preview from Analog Interfacing to Embedded Microprocessor Systems, 2nd Edition
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The Analog Devices AD5203 is a quad digital potentiometer with an SPI-like
serial interface. The AD5203 potentiometers each have 64 positions and have the
same voltage range limitations as the AD5220 (0 V to the positive supply). The
AD5203 comes in 24-pin DIP and surface-mount packages. The AD5203 has a
shutdown feature; by bringing the SHDN pin low, all four potentiometer wipers
are taken to the B terminal. When SHDN goes high again, the wipers resume
their previous position. A typical application for this would be a mute function in
a stereo.
One issue with digital potentiometers that does not occur with mechanical
potentiometers is power-up operation. ...
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