How does the LIN-LOG amplifier's overall gain behave as each stage saturates?

How does the LIN-LOG amplifier's overall gain behave as each stage saturates?

• A. Gain decreases
• B. Gain increases
• C. Gain stays the same
• D. Gains fluctuate

Answer: (A)

In a LIN-LOG amplifier, several gain stages are cascaded to cover a wide dynamic range. Each stage can amplify up to a certain maximum before it clips (saturates). When a stage hits saturation, it no longer provides the same incremental amplification—the stage’s effective gain drops toward zero as its output is limited. Since the overall output gain is the product of all stage gains, any stage that saturates reduces the total gain of the chain. As more stages saturate with higher input, the combined slope of the transfer function decreases, producing compression rather than more amplification. That’s why the overall gain decreases as each stage saturates.

In a LIN-LOG amplifier, several gain stages are cascaded to cover a wide dynamic range. Each stage can amplify up to a certain maximum before it clips (saturates). When a stage hits saturation, it no longer provides the same incremental amplification—the stage’s effective gain drops toward zero as its output is limited. Since the overall output gain is the product of all stage gains, any stage that saturates reduces the total gain of the chain. As more stages saturate with higher input, the combined slope of the transfer function decreases, producing compression rather than more amplification. That’s why the overall gain decreases as each stage saturates.