Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
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The “order” of a control system<br />
No suspension<br />
First order suspension:<br />
springs on chassis<br />
Second order<br />
suspension: springs on<br />
chassis and in seats<br />
• More springs, more comfort. A higher order control system suppresses bumps<br />
(noise) much better than a low order one. You can go over very bumpy roads if<br />
you have a high order suspension system.<br />
• High order noise shaping suppresses the error much better than a low order<br />
noise shaping. You can let in a lot of noise (ie use a simplified DAC) if you have<br />
high order noise shaping.<br />
ΣΔ/HyperStream 25 of<br />
44
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