Home/ Questions/Q 7095
Next
Answered
venkyelectrical
Asked: 2022-01-04T15:56:21+00:00 In:

2.67 For the difference amplifier of Fig. 2.16, show that if each resistor has a tolerance of ±100% (i.e., for, say, a 5% resistor, = 0.05) then the worst-case CMRR is given approximately by where K is the nominal (ideal) value of the ratios (R2/R1) and (R4/R3). Calculate the value of worst-case CMRR for an amplifier designed to have a differential gain of ideally 100 V/V, assuming that the op amp is ideal and that 1% resistors are used. What resistor tolerance is needed if a CMRR of 80 dB is required?

*2.67 For the difference amplifier of Fig. 2.16, show that if each resistor has a tolerance of ±100% (i.e., for, say, a 5% resistor, = 0.05) then the worst-case CMRR is given approximately by

2.67 For the difference amplifier of Fig. 2.16, show that if each resistor has a tolerance of ±100% (i.e., for, say, a 5% resistor, = 0.05) then the worst-case CMRR is given approximately by where K is the nominal (ideal) value of the ratios (R2/R1) and (R4/R3). Calculate the value of worst-case CMRR for an amplifier designed to have a differential gain of ideally 100 V/V, assuming that the op amp is ideal and that 1% resistors are used. What resistor tolerance is needed if a CMRR of 80 dB is required?                                                              where K is the nominal (ideal) value of the ratios (R2/R1) and (R4/R3). Calculate the value of worst-case CMRR for an amplifier designed to have a differential gain of ideally 100 V/V, assuming that the op amp is ideal and that 1% resistors are used. What resistor tolerance is needed if a CMRR of 80 dB is required?

microelectronics by sedra and smith 8th edition chapter 2
Share

    1 Answer

    Sorry, you do not have a permission to view answers. Please subscribe to paid membership

    You must login to add an answer.

    Need An Account,