Hi all, I have to design a cmos analog RF subtractor. Conditions it should be meet subtractor 1. ultra low power 2. No DC component in output 3. Large signals at input terminals 4. Gain must be unity.
I am waiting for assistance.
Need help in designing RF CMOS analog subtractor
Dec 03, 2006
3 Replies
Sure. What about frequency range ? Amplitude range ?
Rene
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JosephKK
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(1) How low power? My brother works with long-distance power lines, where "low-power" means under a megawatt.
(2) How close to "No"? Anything under 100mV is easy to do. Anything under 5mV is tricky. Please specify.
(3) How large is "Large"? A microvolt is large to a satellite dish LNA. A thousand volts is small to a HiPot tester. Please specify.
(4) How close to unity, and over what frequency range? There are amplifiers for seismic studies that roll off at 10Hz, then there are scope front end amplifiers that roll off at 10GHz. Please specify.
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