OUTPUT_LIMITER

Published:2009/7/7 22:21:00 Author:May | From:SeekIC

HA-5190 is rated for ±5 V output swing, and saturates at ±7 V. As with most op amps, recovery from output saturation is slow compared to the amplifier's normal response time. Some form of limiting, either of the input signal or in the feedback path, is desirable if saturation might occur. The circuit illustrates a feedback limiter, where gain is reduced if the output exceeds ± ( Vz + 2 Vf). A 5-V zener with a sharp knee characteristic is recommended.



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