Elektor Team
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5-MHz Active Lowpass Filter

In the LT1567 Linear Technology (www.linear-tech.com/pdf/1567i.pdf) has produced a component specially developed for building analogue filters with cutoff frequencies up to 5 MHz. It contains two wide-bandwidth operational amplifiers, the second of which has a fixed configuration as an inverting amplifier with unity gain. To construct a lowpass filter just two external capacitors and three resistors are required.Example component values for corner frequencies of 1 MHz, 2 MHz, and 5 MHz are shown in the table.
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