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5 to 20 MHz Intermediate-frequency amplifier
IFA consists of 3-stages amplifier with tunable gain, AGC system, linear output buffer for differential analog output, analog-digital converter for 2-bits digital output.Each stage of the amplifier has differential input and output. Gain is sequentially reduced from the last stage to the first stage. Also gain can be fixed by the digital code DAC<9:0>. Output voltage supported by AGC system on differential load at 500 Ohm or 1000 Ohm compounds:
- for sine waveform 200 mV (peak-to-peak);
- for noise signal 480 mV (peak-to-peak).
The block is fabricated on SMIC CMOS 018 um technology.
- for sine waveform 200 mV (peak-to-peak);
- for noise signal 480 mV (peak-to-peak).
The block is fabricated on SMIC CMOS 018 um technology.
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