DC blocking apparatus and technique for sampled data filters
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United States of America Patent
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Dec 16, 1997
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N/A
app pub date -
Jul 12, 1996
filing date -
Jul 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sampled data filter (400) provides on-chip blocking of DC signals. The addition of a very long time constant (VLTC) integrator (412) into the negative feedback path (414) of a first sampled data integrator (402) provides a lower corner frequency (502) with a zero at DC. The lower corner frequency (502) is adjustable while the desired frequency response is maintained.
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