Record number :
100087
Title of article :
Gain-enhanced feedforward path compensation technique for pole-zero cancellation at heavy capacitive loads
Author/Authors :
P.K.، Chan, نويسنده , , Y.C.، Chen, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-932
From page :
933
To page :
0
Abstract :
An improved frequency compensation technique is presented in this paper. It is based on a cascade of a voltage amplifier and a transconductor to form a composite gain-enhanced feedforward stage in a two-stage amplifier so as to broaden the gain bandwidth via low-frequency pole-zero cancellation at heavy capacitive loads, but yet without increasing substantial power consumption. The technique has been confirmed by the experimental results. An operational amplifier has been designed to drive a capacitive load of 300 pF. The amplifier exhibits a dc gain of 87 dB, a gain bandwidth of 10.4 MHz at 63.7(degree) phase margin, an average slew rate of 3.5 V/(mu)s, a compensation capacitor of only 6 pF while consuming 2.45 mW at a 3-V supply in a standard 0.6-(mu)m CMOS technology.
Keywords :
waist circumference , Abdominal obesity , Prospective study , 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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