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使用XICOR公司对数数控电位器(XDCP)控制数字音频放大
消耗积分:5 |
格式:rar |
大小:161 |
2009-05-27
张伟
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Often the power amplifier stage of a communications
device is located some distance from the control panel.
The typical solution is to mount the volume control on
the front panel and run a pair of shielded cables back to
the power amplifier stage. A better solution is to use the
Xicor X9314 logarithmic taper digitally controlled
potentiometer. This completely eliminates the need for
shielded cables since the digital pot can be located on the
printed circuit board near the low level input stages of
the power amplifier. The up/down volume switches can
be located yards away as these are merely low speed
TTL signals.
device is located some distance from the control panel.
The typical solution is to mount the volume control on
the front panel and run a pair of shielded cables back to
the power amplifier stage. A better solution is to use the
Xicor X9314 logarithmic taper digitally controlled
potentiometer. This completely eliminates the need for
shielded cables since the digital pot can be located on the
printed circuit board near the low level input stages of
the power amplifier. The up/down volume switches can
be located yards away as these are merely low speed
TTL signals.
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