Record number :
100051
Title of article :
Chopper-stabilized high-pass sigma delta modulator utilizing a resonator structure
Author/Authors :
K.، Ishida, نويسنده , , M.، Fujishima, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-626
From page :
627
To page :
0
Abstract :
A chopper-stabilized high-pass sigma delta modulator (SDM) utilizing a resonator structure for the reduction of lowfrequency noise, such as dc offset, thermal drift, and 1/f noise, is presented. The high-pass SDM has a zero of a noise transfer function at half of the sampling frequency and is stabilized by chopper modulation. Since the first integrator of the proposed modulator has a large closed-loop gain, no pre-amplifier is required even when the input signal is small, which is suitable for low-power applications. The signal-to-noise ratios (SNRs) and power dissipations of a high-pass modulator and a conventional modulator have been numerically analyzed.
Keywords :
waist circumference , Prospective study , Abdominal obesity , Food patterns
Journal title :
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING
Journal title :
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING
Serial Year :
2003
Link To Document :
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