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Recent content by chen_Analog

  1. C

    Transistor works in weak inveration

    how transistor works If the two differential input transistors of comparator work in subthreshold region due to low current, is there any negative effect or anything should be careful during design?
  2. C

    Transistor works in weak inveration

    inveration I tried to design a low power opamp, what is the negative effect if all the transistor works in weak inversion?
  3. C

    How to test the performance of comparator?

    How to test the performance of comparator, such as offset, noise.....
  4. C

    difference between large signal gain and small signal gain

    small signal gain So in spice simulation, when doing AC analysis, the small signal model of the device is employed, but when doing Tran analysis, the large signal model is employed, isn't it?
  5. C

    difference between large signal gain and small signal gain

    large signal gain what is the main difference between large signal gain and small signal gain
  6. C

    How to do exp() calculation in MSP430 micro-controller?

    Who have done exp() calculation in MSP430 micro-controller before. I am using MSP430F149
  7. C

    What is noise contribution of the additional input stage

    What is the noise contribution of the additional input stage formed by the MF1 and MF2 which functions as multipath zero compensation.
  8. C

    How to analysis the systematic offset of basic two-stage OTA

    can anyone know about how to analysis the systematic offset of basic two-stage OTA. It seems quite easy to analysis the systematic offset of basic two-stage opamp, but I don't know how to do in OTA?
  9. C

    how to match in MOS current mirrors?

    current matching large ratio you'd better careful in layout. ususally the mismatch of Vth will be dominate in current mirror.
  10. C

    How can I calculate the W/L of these transistors

    why it is necessary for Bias M22 and M23 to fullfill gm23/Cg24 > UGF ?
  11. C

    how does the output stage of this opamp function?

    Here, PP15 and NP3 form a floating current source
  12. C

    How access the bitfield of MSP430 in IAR C

    iar msp430 bitfield example I know this method, but I think this is still not bit access but whole register access The following is the example of bit accessing: __no_init volatile union { unsigned char IE1 struct { unsigned char WDTIE : 1; unsigned char OFIE...
  13. C

    How access the bitfield of MSP430 in IAR C

    bitfield msp430 example How to access the bitfield of MSP430 using IAR C. for instance, I want to set or reset of any individual bit from c code.
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