Posted on Jun 15, 2012

The circuit will provide a 20 ±0.1 dB voltage gain from 500 kHz to 50 MHz. The low-frequency response of the amplifier can be extended by increasing the value of the 0.05-JLF capacitor connected in series with the input terminal. This circuit will yield an input-noise level of approximately 10 !LV over a 15.7-MHz bandwidth.

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The gain can be calibrated by adjusting the potentiometer connected between pins 4 and 11. The 1-KO potentiometer can be adjusted for an exact voltage gain of 10. This preserves the scale factor of the instrument.

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