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Recent content by you23

  1. Y

    distortion (INL) problem in sigma delta modulator

    Hi, I designed 2nd order sigma-delta modulator (1bit), and made chip, and measuring now. I use FPGA after modulator output. the FPGA is used for sinc3 decimation filter (16bit out). I have a distortion problem for measurement. test condition; VDD=3V, VSS=0V, VREF+=3V, VREF-=0V...
  2. Y

    INL & Gain of sigma-delta modulator

    I am testng sigma-delta modulator (SC) that I designed. *2nd order - 1bit output(SC) *fully-differential input *fclk=500k *gain=1 *VDD=3V, Vcommon=1.5V in these case , 1) Vinp=Vcommon, Vinm=0to3V swep ---> gain=almost 0, INL=4LSB 2) Vinm=0to3V, Vinm=Vcommon swep ---> gain=lower than 0...
  3. Y

    Fully Differential Opamp Verilog-A Model

    Hi I found cadance example. And, tried to modify this example to add output limitation. But. I could not. Pls tell me. Thanks.

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