9.117 Consider the input stage of the CMOS op amp in Fig. 9.40 with both inputs grounded. Assume that the two sides of the input stage are perfectly matched except that the threshold voltages of Q3 and Q4 have a mismatch V t. Show that a current gm3Vt appears at the output of the first stage. What is the corresponding input offset voltage?

117 - 9.117 Consider the input stage of the CMOS op amp in Fig. 9.40 with both inputs grounded. Assume that the two sides of the input stage are perfectly matched except that the threshold voltages of Q3 and Q4 have a mismatch V t. Show that a current gm3Vt appears at the output of the first stage. What is the corresponding input offset voltage?

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images - 9.117 Consider the input stage of the CMOS op amp in Fig. 9.40 with both inputs grounded. Assume that the two sides of the input stage are perfectly matched except that the threshold voltages of Q3 and Q4 have a mismatch V t. Show that a current gm3Vt appears at the output of the first stage. What is the corresponding input offset voltage?

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