ADC buffer (CB9313E)

This circuit was found in documentation from Analog Devices from the 90s. The circuit uses components from that time, which are uncommon today.

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80 MHz cascode amplifier (CB10065E)
This circuit was found in documentation from the 70s. We can try current JFET transistors....
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LM386 Bridge Amplifier (CB25300E)
This bridge circuit is designed for 8-ohm speakers delivering a few watts of power. The circuit is from...