Which information is incorrect for an ideal op-amp?*1 pointOpen loop voltage gain is infiniteInput resistance is infiniteSlew rate is infiniteCMRR is zero

To answer the question regarding the characteristics of an ideal operational amplifier (op-amp), we need to analyze the given options based on the fundamental properties of an ideal op-amp.

1. Open Loop Voltage Gain: An ideal op-amp has an infinite open loop voltage gain, which allows it to amplify the input signal without distortion.

2. Input Resistance: An ideal op-amp is characterized by infinite input resistance, meaning it does not draw any current from the input signal, thus preventing any loading effect.

3. Slew Rate: For an ideal op-amp, the slew rate is also considered infinite. This means that it can change its output voltage instantaneously with respect to time.

4. CMRR (Common-Mode Rejection Ratio): For an ideal op-amp, the CMRR is not zero; in fact, it is infinite. CMRR is a measure of how well the op-amp can reject common-mode signals, and an ideal op-amp completely rejects those signals, resulting in an infinite value.

Final Answer

The incorrect statement for an ideal op-amp is "CMRR is zero."